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全部话题 - 话题: soil
首页 上页 1 2 3 4 5 6 7 8 9 10 下页 末页 (共10页)
x********u
发帖数: 15396
1
来自主题: pets版 - 感染弓形虫,万分惊恐中!
then u need soil contaminated by cat feces, dog bring the soil in, touch the soil by ur hand, eating the soil
R*o
发帖数: 3781
2
来自主题: TrustInJesus版 - "Once Saved Always Saved" a dangerous delusion
Can you lose your salvation?
Many people fervently believe that once saved, they can never lose their sal
vation. I pray that those who do believe it will read the following with an
open heart and an open mind. Above all, I urge every reader to check each Sc
ripture presented and then check the context that the Scriptures are quote
d in by reading at least ten verses before and ten verses after.
I sincerely believe the 憃nce saved always savedconcept to be wrong. The i
mplication that once someon... 阅读全帖
A****0
发帖数: 72
3
来自主题: CivilEngineering版 - A technical question. Please help!
I disagree. Liquefaction is not the reason. You have to have strong
vibrations/earthquakes to liquefy the soils since they were compacted.
I believe the reason of soil losing compactness is because of frost heaving
action. The fines in the fine sand make the backfill susceptible to frost
action. Your company probably only checked the soil density at the top. The soils below frost line should meet the required 95% compaction requirement.
j***h
发帖数: 4412
4
anthonyduan 2010-1-6 15:46
看到楼主的情况, 我也想谈两句, 我和楼主接近同行, 我做结构的.
1. 以楼主的情况找专业工作不易, 我多次强调, 画图不是做ENGINEER的跳板, 这里的
ENGINEER
不会画图.
2. 以工程为例, 本地工作经验是基本要求, 国内的5年可以不用考虑了, 如果你以后有
了本地经
验, 那么你以前的工作经验可以加上去.
3. 鬼子比较讲究工程标准, 懊洲标准要玩熟.
4. 话说回来, 再难也有人找到工作,再容易也有人找不到工作, 还要看自身实力和运气.
5. BRISBANE&PERTH机会比较多.
最后列几个公司, 你自己可以到网上看看.
ARUP
GHD
HATCH
AURECON
HYDER
SKM
WORLEY PARSON
PARSONS BRINKHOFF
ABI
CARDNO
查看完整版本: 关于去澳洲的规划---盼有经验之人回复
二房二厅 2010-1-5 12:15
关于去澳洲的规划---盼有经验之人回复
本人土木工程师,国内一家设计院从事岩土工程设计,主要是地基处理,经验5年
现准备移民澳洲,目前有如下规... 阅读全帖
j********n
发帖数: 792
5
A survey of the foundation was performed. The overall tilt of the foundation
was less than 0.15% as evaluated along the major axis. Several American
Society of Civil Engineers (ASCE) Foundation Subgroups consider tilt of less
than 1% acceptable. The local floor slope of the foundation was less than 0
.1 % in the front bedroom and other areas of the residence. Local floor
slope of up to 0.5% is acceptable to FHA and other lenders. The interior
distress observed within the residence was cosmetic a... 阅读全帖
h****s
发帖数: 911
6
来自主题: Environmental版 - 说3个环境工程赚大钱的例子
中文阅读能力下降了。为何我说他是"expert"? 这家伙是个混混,用ZVI来treat
shallow
soil的问题很多,ZVI 多用于GW, 因为GW可以帮助传递ZVI in saturated soil.
0.5到2'的unsaturated soil, 唯一可以行得通的是put enough injection points
to
create overlaps,which leads to other consents.
A, ZVI is one of the most expensive treatment approaches in PCE chemical
injection treatment on the list.
B, The shallow soil underneath a building foundation usually is very
packed, which means a lower permeability and lower porosity.
C, potential damage to building foundation / ... 阅读全帖

发帖数: 1
7
Best of Last Year—The top Phys.org articles of 2017
December 19, 2017 by Bob Yirka, Phys.org report
Study reveals substantial evidence of holographic universe
A sketch of the timeline of the holographic Universe. Time runs from left to
right. The far left denotes the holographic phase and the image is blurry
because space and time are not yet well defined. At the end of this phase (
denoted by the …more
It was another great year for science, particularly physics, as evidenced by
a study conducte... 阅读全帖
c*********d
发帖数: 9770
8
【 以下文字转载自 Military 讨论区 】
发信人: chinabbsdad (张果老他爹), 信区: Military
标 题: 论林彪反党集团的社会基础(汉英对照)
发信站: BBS 未名空间站 (Fri Nov 22 09:43:14 2013, 美东)
论林彪反党集团的社会基础
On the Social Basis of the Lin Piao Anti-Party Clique
姚文元
by Yao Wen-yuan
[This article is reprinted from Peking Review, #10, March 7, 1975, pp. 5-10.]
毛主席在讲到必须搞清楚无产阶级对资产阶级专政的问题时明确指出:“林彪一类如上
台,搞资本主义很容易。因此,要多看点马列主义的书。”这就提出了一个极其重要的
问题:即“林彪一类”的阶级本质是什么?林彪反党集团产生的社会基础是什么?把这
个问题弄清楚,对于巩固无产阶级专政、防止资本主义复辟,对于坚定地执行党在社会
主义历史阶段的基本路线,一步一步地造成资产阶级既不能存在也不能再产生的条件,
无疑是十分... 阅读全帖

发帖数: 1
9
诺贝尔奖爆露最大丑闻,真相浮出
诺贝尔医学奖项爆露最大丑闻,把奖项给了残害无数生灵,残害人类的日本骗子科学家
。这是人类历史上最悲哀的时刻。我所有的研究都揭示癌症,老年痴呆,糖尿病现阶段
广泛地流行,是日本人几十年孜孜不倦刻意造成的,是一种人造的疾病。他们给亿万的
生灵造成了终生的痛苦,他们应该被送上反人类的法庭去审判,而不是被奖赏。他应该
被逮捕,交代日本人是用什么样的手段伤害全世界无辜的人群的,如何制造癌症,老年
痴呆,糖尿病患者的。如何通过这些人体实验,给医药公司攫取了大量的财富。今年的
获得者是Yoshinori Ohsumi. 查看了一下去年的获得者,竟然也有个日本凶手Satoshi
Omura. 他的研究更是惨不忍睹,他的一生就是罪恶的一生,不知道害死了多少无辜的
人。只有中国的获得者是无辜的,值得敬佩的,以身献身科学的。说到底,如果不是这
些可恨的美国人,日本人传播这些寄生虫,我们的科学家也不用有那么多的牺牲来攻克
这些难题。有一天,我睡在沙发上,发现有人刺进了我的鼻子里,不知道他们往我身上
注射了什么。为什么我知道,因为他们研究的这些东西都用在了我的身上,和我身边的
... 阅读全帖
m***n
发帖数: 12188
10
来自主题: History版 - 人类早期的历史
谈论大时间尺度的历史,必须和自然史结合起来。否则就会牛头不对马尾。下面是我做
的一个记录历史事件的 excel文件的一部分拷贝:
只有把整个人类的历史合在一起,而非按地理,民族分类,才能真正听到文明前进的脚
步声,看到“这生命的千军万马,呼啸向前的景象”(参考柏格森《创造的进化》一书
最后一段)。
time events
c 3000000 BC Stone tools S&T
c 1600000 BC most recent ice age begins nature
c 1400000 BC 人类开始用火 use of fire S&T
c 50000 BC a meteorite falls in Arizona, 440,000 tons, and forms a crater
1.2 km wide and 150 m deep nature
c 40000 BC mining, the oldest mine known is at Bomvu R... 阅读全帖
N******K
发帖数: 10202
11
关于粮食十一连增的几个问题
已有 371 次阅读 2014-12-13 21:58 |个人分类:建言新农村|系统分类:观点评述|关键
词:粮食产量 十一连增 粮食安全 进口 撂荒
蒋高明
刚才,中国科学报记者就国家统计局公布粮食十一连增问题,采访笔者对此问题的
看法。国家统计局12月4日发布公告,2014年全国粮食总产量达到60709.9万吨(12142
亿斤),比2013年增加516万吨(103.2亿斤),增长0.9%。我国粮食总产量实现“十一
连增”从2010年开始,每年相对前一年的增幅分别为2.9%,4.52%,3.2%,2.1%,0.9%
。这个问题非常复杂,数据肯定是没有问题的,但关键是我们的粮仓里是否有这么多粮
食。现在需要澄清的问题是:
第一,中国18亿亩耕地撂荒的有多少?播种季节减少的耕地有多少?
第二,原本不缺粮食的省份,许多也开始缺粮,其原因是什么?
第三,既然已经产出了6亿多吨粮食,为什么还要那么多的进口?
其实,当前农业的问题,是在资本市场打压下,农民种地积极性下挫严重,老人妇
女种地还能够维持多少?动物与人争粮,且用... 阅读全帖

发帖数: 1
12
诺贝尔奖爆露最大丑闻,真相浮出
诺贝尔医学奖项爆露最大丑闻,把奖项给了残害无数生灵,残害人类的日本骗子科学家
。这是人类历史上最悲哀的时刻。我所有的研究都揭示癌症,老年痴呆,糖尿病现阶段
广泛地流行,是日本人几十年孜孜不倦刻意造成的,是一种人造的疾病。他们给亿万的
生灵造成了终生的痛苦,他们应该被送上反人类的法庭去审判,而不是被奖赏。他应该
被逮捕,交代日本人是用什么样的手段伤害全世界无辜的人群的,如何制造癌症,老年
痴呆,糖尿病患者的。如何通过这些人体实验,给医药公司攫取了大量的财富。今年的
获得者是Yoshinori Ohsumi. 查看了一下去年的获得者,竟然也有个日本凶手Satoshi
Omura. 他的研究更是惨不忍睹,他的一生就是罪恶的一生,不知道害死了多少无辜的
人。只有中国的获得者是无辜的,值得敬佩的,以身献身科学的。说到底,如果不是这
些可恨的美国人,日本人传播这些寄生虫,我们的科学家也不用有那么多的牺牲来攻克
这些难题。有一天,我睡在沙发上,发现有人刺进了我的鼻子里,不知道他们往我身上
注射了什么。为什么我知道,因为他们研究的这些东西都用在了我的身上,和我身边的
... 阅读全帖
t******l
发帖数: 10908
13
来自主题: Military版 - 小墨毒贩喝死案和解原因有两点
这个小毒贩是在 port of entry,算不算 American Soil 有争议。就算小毒贩家属要
告美国法院上,也不会跟美国领土或公民一个待遇。
当然同意你说的一百万不算贵。。。这两瓶纯冰毒流入 American Soil 的话,损失至
少有几个亿。。。小毒贩如果回到墨西哥的话,多半还会干运毒的事。
另外边检和安检的职责不一样。安检的职责仅限于此次飞机轮船。边检的职责是
American Soil,责任更大。而且边检位于国家法律的边界,边检面对的幺蛾子法律技
术问题也麻烦。总之边检干被人骂的脏活,法律上给边检更多的酌情决定权(
discretion)也属于人之常情了。
s*****n
发帖数: 1998
14
来自主题: Military版 - The leaning tower of San Francisco
Recent satellite images show that the $350 million luxury high-rise,
Millennium Tower, has already sunk 16 inches since it was completed seven
years ago and now has a six-inch lean at the top of the tower. Engineers say
it shows no sign of stopping.
The leaning tower of San Francisco
A luxury high-rise in the heart of San Francisco City has been dubbed the "
leaning tower of San Francisco" after the building began to sink-and
satellite images have now revealed just how bad the problem is.
Data f... 阅读全帖

发帖数: 1
15
来自主题: Military版 - 纽时是比较客观靠谱
纽时是比较客观靠谱,可读性强的左派媒体,比CNN强多了
没读完,注意到如下几点:
1. 2010年一个未向公众披露的调查显示:某隧道工程1/3的工人吃空饷,每天1000美元
工资
2. 工会收买政客要挟建筑商
3. 纽约隧道工程操作同样的机器,做类似量的工作,
需要的人手是亚洲澳洲欧洲(法国等)国家3-4倍
4. 挖隧道工人时薪+福利每小时111元,周末节假日时薪翻倍,超时再翻倍到 400/
per hour, 结果发现工人工作很容易超时(为啥工程整体进度还是那么慢想不明白)
。。lol
The Most Expensive Mile of Subway Track on Earth
How excessive staffing, little competition, generous contracts and archaic
rules dramatically inflate
capital costs for transit in New York. An accountant discovered the
discrepancy while reviewing the bu... 阅读全帖
s******r
发帖数: 5309
16
Appearing at the joint news conference with Putin after the talks in the
Finnish capital ended, Trump said he and Putin discussed their disagreements
“at length.” He added: “Our relationship has never been worse than it is
now. However, that changed, as of about four hours ago.”
The summit began hours after Trump blamed his own country, rather than
Russia, for the hostilities between their two nations.
Speaking first at the news conference, Putin said the talks took place “in
a frank and busines... 阅读全帖

发帖数: 1
17
来自主题: Military版 - 数据说话:长江水深
Yangtze River
RIVER, CHINA
WRITTEN BY: Aleksandr Pavlovich Muranov Charles E. Greer
See Article History
Alternative Titles: Ch’ang Chiang, Chang Jiang, Da Jiang
Yangtze River, Chinese (Pinyin) Chang Jiang or (Wade-Giles romanization) Ch
’ang Chiang, longest river in both China and Asia and third longest river
in the world, with a length of 3,915 miles (6,300 kilometres). Its basin,
extending for some 2,000 miles (3,200 km) from west to east and for more
than 600 miles (1,000 km) from north to so... 阅读全帖

发帖数: 1
18
来自主题: Military版 - 不列颠百科全书:长江水深数据
Yangtze River
RIVER, CHINA
WRITTEN BY: Aleksandr Pavlovich Muranov Charles E. Greer
See Article History
Alternative Titles: Ch’ang Chiang, Chang Jiang, Da Jiang
Yangtze River, Chinese (Pinyin) Chang Jiang or (Wade-Giles romanization) Ch
’ang Chiang, longest river in both China and Asia and third longest river
in the world, with a length of 3,915 miles (6,300 kilometres). Its basin,
extending for some 2,000 miles (3,200 km) from west to east and for more
than 600 miles (1,000 km) from north to so... 阅读全帖
c********i
发帖数: 942
19
硕鼠硕鼠,无食我麦!
三岁贯女,莫我肯德。
逝将去女,适彼乐国。
乐国乐国,爰得我直?
Big rat big rat,
Don't eat my oat!
Three years raised you,
Not all me tend!
Sworn to leave you,
Go my joy soil.
Joy soil joy soil,
Where I shall live!
G****r
发帖数: 5579
20
来自主题: USANews版 - 选美国总统最重要的原则
IJO (Islamic Jihad Organization) 应该是早期的恐怖集团之一。
https://en.wikipedia.org/wiki/Islamic_Jihad_Organization
你看看他们共击的对象主要是美国法国人, 对以色列的攻击不多(对以色列驻外大使
馆的攻击死伤的也不是以色列人)。
Bombings and assassinations[edit]
24 May 1982. Car bomb attack on French Embassy in Beirut killing 12 and
wounding 27. Islam Jihad is one of several groups taking responsibility.
Anger over France's providing of arms to Iran's enemy Iraq is thought to be
the motivating factor.[24]
18 April 1983. Bombing of U.S. Embassy in Beirut. Detonate... 阅读全帖
a*****1
发帖数: 3817
21
来自主题: USANews版 - trump懵逼了,trump轮集体被打脸
自己去看美国宪法
United States Constitution
From Wikipedia, the free encyclopedia
Jump to: navigation, search
United States Constitution
Constitution of the United States, page 1.jpg
Page one of the original copy of the Constitution
Created
September 17, 1787
Ratified
June 21, 1788
Date effective
March 4, 1789; 227 years ago
Location
National Archives,
Washington, D.C.
Author(s)
Philadelphia Convention
Signatories
39 of the 55 delegates
Purpose
To replace the Articles of Confederation (177... 阅读全帖
a*****1
发帖数: 3817
22
来自主题: USANews版 - trump懵逼了,trump轮集体被打脸
自己去看美国宪法
United States Constitution
From Wikipedia, the free encyclopedia
Jump to: navigation, search
United States Constitution
Constitution of the United States, page 1.jpg
Page one of the original copy of the Constitution
Created
September 17, 1787
Ratified
June 21, 1788
Date effective
March 4, 1789; 227 years ago
Location
National Archives,
Washington, D.C.
Author(s)
Philadelphia Convention
Signatories
39 of the 55 delegates
Purpose
To replace the Articles of Confederation (177... 阅读全帖
i******d
发帖数: 565
23
来自主题: Living版 - 整理草坪,求建议
地点在VA,前房主几年来一直没有维护,使得房子前面的草坪很差,杂草占了一半以上
。后面的草坪目前还好,不需要太大的维护。房前的草坪大概3500尺,土层很少,下面
都是碎石头,估计当初builder直接将草铺在碎石头上。在版上做了一点考古,想采用
下面的方案,求建议和补充:
1。用割草机将草割到尽量短,割掉的草打包带走,并清理草坪。
2。从HD租一个areator,将草坪全部过一遍。
3。浇水,starter fertilizer,撒草籽。
4。从HD购买top soil,好像价格是$1.37/cubic ft,准备采用2"厚度,3500尺草坪需要
580 cubic ft 或者22 cubic yard,花费要$790。请问2"厚度是否合适,花这个钱是否
值得。
5。撒草籽以后,铺上top soil,然后每天浇水,一天大概6次,保持土地一直处在潮湿
状态。好像如果从HD买塑料薄膜铺在top soil上会省很多水,请问这样可行吗?
6。等草长出来再过一个月以后,开始采用weed killer杀死草坪上的杂草。请问这样可
行吗?是否需要我现在用round up杀掉所有的草。我担心这样做的话
y****i
发帖数: 5690
24
来自主题: Living版 - MULCH和草种问题
差了一下,需要把OVERSEEDING的AREA的草基本都铲掉,SOIL露出来才行啊。
You must rake the overseeding area thoroughly with a grass rake, leaving jus
t stubble and bare soil with no debris. The reason for this step is that gra
ss seed will not germinate if it is not in direct contact with the soil. If
it is sitting on thatch, grass clippings, or on any other debris, it is noth
ing but bird food.
现在还是挺绿的,能见人。这要是房子开始SHOWING了,草还没出来,岂不是更糟?
i******d
发帖数: 565
25
在virginia,上周整理草坪,翻地,撒草籽,上top soil,然后每天大量的浇水。
现在天气很热,每天气温超过85度,浇水要3个小时。白天家里没人还没法浇水,下班
回来后就发现地表上的top soil都是干的。
在版上看到有人使用塑料薄膜放在top soil上,请问这样可以吗?有没有人做过。昨天
在lowes买了9ft X 400FT的薄膜,想最近尝试一下。
问题:可不可以铺透明的塑料薄膜?铺上薄膜以后可以多久不用浇水?是不是可以等到
草籽长出来以后再拿掉薄膜?
谢谢。
n*****8
发帖数: 237
26
来自主题: Living版 - price
咋样???
DELIVERED price.
DELIVERY MINIMUMS:IN OUR LOCAL AREA 2yd or 2 ton
SOILS:
TOP SOIL: Native Brown Soil, some roots or stones $27.00/yd
MULCHES:
HARDWOOD MULCH — Medium Grind, Best Value $27.00/yd
TRIPLE GROUND HARDWOOD — Fine Grind, Dark Brown, Our Best Seller $32.00/yd
COLOR ENRICHED RED or JERSEY GOLD - Color Lasts Up To 1 year $45.00/yd
COLOR ENRICHED BLACK or BROWN — Color Lasts Up To 1 year $37.00/yd
m*****a
发帖数: 382
27
来自主题: Living版 - 问一个slab foundation的问题
你说的是mat foundation,还是一般的基础呢,其实做房子(木头,没有basement),很多时
候都不会有soils report的,因为花那个钱没有多大必要,很多人都是挖下去24寸,然后
compact一下,就开始灌水泥了,这个比较普遍的,有些city他们知道自己的city土很烂,
就会要求提供soils report或者做mat foundation,或者做tie beam 把foundation tie
在一起.如果你不放心,你可以去问问施工队,有没有soils report,里面会详细说的.
e********t
发帖数: 9607
28
来自主题: Living版 - 一片草地上怎么开辟菜地?
不好弄啊,我可能要放弃这个想法了。
但是这人说的很简单似地。
http://forums2.gardenweb.com/forums/load/soil/msg1014303819744.
Last fall I did the same thing you are planning. I did it the lazy way
though.
I put the raised bed frames right on the lawn, laid newspaper several layers
thick down on top of the grass (no tilling!) and filled the beds with a mix
of peat moss, sheep manure and compost. Some of the compost was only
partially finished. Then in the spring I planted.
It wasn't exactly a lasagne garden because the content... 阅读全帖
s**********n
发帖数: 291
29
fwiw, it is not too late to start even now (before the end of May)
1) rake the yard clean of all debris and large rocks. that includes the
weeds. We did on our own, some ppl rented a bobcat if the lawn is big.
the tools we used
a bow rake
steel round point shovel
hoe (super handy)
hand trowel
hand rake
pruner (couple ones in different size)
wheelbarrow
pairs of garden gloves
能想起来的就这么多吧。
2) order "top soil" (i.e. not dirt) that is spread 2-3 inches deep over the
entire yard.(don't buy the bags fr... 阅读全帖
S*A
发帖数: 7142
30
对症下药。把土采样去做个 soil test,
http://www.loganlabs.com/
做带 OM 的,大概 $20 左右。不要怕麻烦。
草黄的原因可以很多的。 soil test 可以告诉你草到底缺什么,
应该如何补。我家的塑料草就是做了 soil test, 拼命补铁。
草就很争气。
种草其实很容易的。就是要相信科学,不要乱来,不要怕小麻烦。
一般长期来说草地肯定要补肥的。一般人是有草就满意了,如果
你对颜色开始讲究的话就要研究土壤了。几乎是缺任何一种元素
都可以黄,你猜没法猜的。
y***n
发帖数: 1666
31
soil test太贵,种的不是high value crop,不值得。
可以好好看看发黄的叶片是什么状态。叶片上有什么特别的病症没有?
比如说,spot或者mosaic,有这些的话,可能是细菌,也可能是病毒。如果是真菌的话
,叶片上可能会有菌丝。
再一个可以在发黄那一片把草皮铲一块起来,看thatch里有没有虫子。
三,也可能是soil compact,你很久很久不打孔,不铺沙,草得根系无法呼吸。
或者那一片over irrigate了。
总之原因会有很多,不要一上来就soil test,白花钱。
c****h
发帖数: 590
32
This type of foundation supposedly let the house "float" on a number of
supporting posts. When the soil contracts/expands, the posts will go up &
down together, therefore preventing the cracks in the concrete perimeter
type of foundation.
I saw this type of foundation in a few houses from the 70's that were built
on clay soil. Not sure how they will hold up during an earthquake,
especially the lateral movements.
Which year is this house? What is the soil condition?
B********4
发帖数: 7156
33
来自主题: Living版 - 菜地里的土从哪儿弄?
What you'd like to look for is one that is close to your location and so
costs of trucking in the soil is low. You can get soil by the ton, depending
on how large an area you need to improve. And what you'd like to look for
is a GARDEN CENTER that allows you to customize your soil mixes. You will
want to know the cost of delivery.
m***y
发帖数: 14763
34

Yes, they only need to kick of a few inches of sod.
This is bad, better till and mediate the top soil. But that's labor
expensive, so, most companies simply add another layer of top soil. (You can
the old lawn could be several inches above the curbside, if this procedure
is repeated over years.)
If most of your top soil is rock hard, it's already dead. You have to apply
a lot of synthetic fertilizer and weedkiller to keep your grass barely alive
, but that's fine. Actually, that's the status qu... 阅读全帖
h******n
发帖数: 2795
35
来自主题: Living版 - 草坪上种
我比较怀疑你新种的草会存活下去。
使用TopSoil作为土层,是很难保存水分的。我吃过太多Top Soil亏了。所谓的Top
Soil,里面所含砂子和小石块实在是太多了。
你新种的草可以活过冬天和春天,但是,如果夏天炎热干旱,很可能因为Top Soil含砂
子太多,你新种的草活不过夏天,或者说,过了夏天,能够存活下来的草比较少。

1
A******D
发帖数: 1075
36
来自主题: Living版 - 草坪上种

所以说要找review好的地方买土嘛。我的土在这里买的:
https://www.saundersls.com/topsoil
草地加土用的organic top soil,很松软。第一张照片是这个organic top soil,拍的
一个鹿脚印,旁边有新发芽的小苗。我觉得太松、轻,不适合种菜,就都放在草地上了
。第二张照片我放在手心里的,是regular top soil,看起来也很好,我准备用来种菜
。也是买了5 cubic yard。200SQFT,半英尺深。
f****i
发帖数: 20252
37
你看看外面卖的top soil里面mulch的大小和比例
另外top soil里面用的是compost,不是直接的mulch
还有,如果mulch里面撒了top soil,到时要返工的话成本大增。
B********4
发帖数: 7156
38

4袋TOP SOIL根本不行。我家草坪靠房子一侧有少许沉降,也就10米长20厘米宽的一条
。我买了10袋TOP SOIL填了,当时还搞得高一些的一个小斜坡以利排水。结果过去一年
,又塌下去了。不知道是TOP SOIL流失了还是压塌了。
p**1
发帖数: 212
39
看上了这个1999年的房子。10天的pending. Inspection 其他都没有大问题。但是地基
level 有1。1寸差别。问了几个经常买卖房子出租的中国人,他们说其实没有事,但大
多数买房的人都不懂房。所以如果将来卖怕遇到麻烦。请大家看一下。要是你会买吗。
或者专业人士请帮我看一下。多谢了。
A. Foundations
Type of Foundation(s): Slab on grade concrete foundation
Comments:
The foundation appears to be performing the function intended.
Structural movement and/or setting noted, however, the foundation appears to
be supporting the structure at this time.
The level differential of the entire foundation was within 1.1 inches.
Steel tendons... 阅读全帖
x******2
发帖数: 546
40
来自主题: Living版 - 请教房屋土地砷超标的问题
签了湾区San Jose Downtown附近的一个在建的新Townhouse。 才在Disclosure上发现
这样一段:
Prior Use of Property. Seller is informed that the underlying property
comprising the
Community was used previously as an industrial warehouse constructed in the
early to mid-1980s and
used as a concrete tilt-up warehouse facility with offices. Adjacent
property uses included a railroad rightof-
way to the immediate west that was utilized by Union Pacific Railroad as the
William Street Rail Yard
from the early 1920s until approximate... 阅读全帖
f*1
发帖数: 837
41
Should be 'weed and feed', not 'weed and seed'.
'lawn food': fertilizer
'feed': fertilizer
'weed': herbicide
Herbicide: If its function is to kill weeds before they emerge from the soil
, it is called pre-emergent. If its function is to kill weeds after they
have emerged from soil, it is called post-emergent.
Note most pre-emergent also prevents good grass to emerge from the soil, so
you shouldn't use it when you are planting new grass or overseed.
I wrote here why 'weed and feed' with post-eme... 阅读全帖
f*1
发帖数: 837
42
来自主题: Living版 - 春天在草坪上打洞
I'd personally recommend against aeration, unless you are really sure that
your soil is compact.
Aeration will likely bring weed seeds up to the surface for later
germination. Especially if you have dropped pre-emergent, you should not
disturb the soil for it to be effective.
Even if the soil is moderately compact, adding organic matter (e.g. top
dressing with compost) and spraying diluted baby shampoo every few weeks is
still better than mechanical aeration, IMHO.
C******e
发帖数: 11790
43
来自主题: Living版 - 铺草皮的土上哪买?
还以为他买的种菜的那个garden soil,最近打折2-2.5/袋。top soil好像1.5左右吧,
lawn soil要5,6块吧。
f*1
发帖数: 837
44
来自主题: Living版 - 问一下怎么除草啊
+1 Roundup is your best bet in your situation.
Also be careful with what top soil you get. Check this out:
http://www.mitbbs.com/article_t/gardening/32010325.html
If you are not confident with the top soil quality and time allows, after
you get the new top soil, water it for 2 weeks and kill any weeds/grass
grown out of it using Roundup.
S*A
发帖数: 7142
45
来自主题: Living版 - 问一下怎么除草啊
fs1 说的不错。
你这个计划有两个问题。第一,杀死草用挖是不行的。
最好的办法还是用 roundup。 roundup 不影响铺新的草,
roundup 需要喷到叶子上吸收才有效果。到土壤里就没有
用了。我家草坪就是先 roundup 很多次,然后撒种子种的。
第二,翻地的时候会把杂草种子给翻出来。浇水会发芽出
杂草。其实不用翻地也可以的。翻地以后,需要等几个月,
地里要浇水,这样让土落下去,整理平整。同时让杂草发芽,
继续用 roundup 杀。搞几个回合表面杂草种子消耗掉。
不需要自己去搬 top soil 的。草长起来有 4 inch 深的根,
你的 top soil 要 4 inch 很贵很贵的。搬运回来的 top soil
同样有杂草种子的问题,需要浇水,发芽,round up 处理。
S*A
发帖数: 7142
46
来自主题: Living版 - 完美草坪 seeding 计划和步骤
有些网友问我这个草坪的 seeding 计划是如何的。
我就大概在这里讲一下。注意的是,我的方式和网上或者视频
介绍的方式不太一样。我会简单讲下我为什么要这么做,主要
都是为了减少杂草发芽破坏新草坪的成长。还有我会尽量简化
掉不需要的步骤,减少资金投入。 反正我的方法是至少
有一个成功例子的。
先决条件,如果这些条件不满足,就不要考虑用这样的计划。
1)草坪要有自动的 irrigation system. 可以是临时的,但是
浇水要均匀。最好有可以编程一天超过 3 次喷水的那种控制
器。
2)要可以忍受草坪有几个月的时间完全秃掉,没有草的状态。
如果你不可以忍受,或者 HOA 不允许,那就不要考虑这个计划。
准备工作要有几个月。工作量其实不大,但是要细致。
3)可以接受使用 round up 来全部灭掉杂草。
使用工具:
1)drop spreader
2)pre-mix sprayer,撒农药和液体化肥。
http://www.amazon.com/gp/product/B00002N67I/
3)rake, 叉子,钉耙。
具体计划:
1) irrigation system. 浇水... 阅读全帖
S*A
发帖数: 7142
47
来自主题: Living版 - 完美草坪 seeding 计划和步骤
太赞实干派。
我的功力不够,只能帮你大概读一下。你的 CEC 和 OM 都还不错。
所以土壤还算不错的。 pH 低比较多。你的 base pH 是没有给吗?
base saturation 里面没有数字是你漏了还是没有给?其他还不错。
我不是很确定铁在 ph 5 里面是不是到了毒性的浓度。
我只能读到比较肤浅的,你几乎肯定需要把 pH 调高,撒 Lime。
好在 pH 低是可以调的, pH 高的话就很难调。
我建议你把 soil test result 贴到
http://aroundtheyard.com/soil/
注意读版主置顶的第一篇 Posting A Soil Test for Interpretation
然后等待版主 andy10917 给你更加详尽的解读。
andy10917 是真正的顶级高手,我比 Andy 弱多了。

.9
u****q
发帖数: 24345
48
来自主题: Living版 - 完美草坪 seeding 计划和步骤
草深和各位大侠,我的soil test结果出来了。麻烦请帮忙看看。
貌似K,Ca,Mg,和S都严重超标。这可咋整呢?
Soil pH (1:1, H2O) 7.1
Modified Morgan extractable, ppm
Macronutrients
Phosphorus (P) 12.6 (4-14)
Potassium (K) 189 (100-160)
Calcium (Ca) 3055 (1000-1500)
Magnesium (Mg) 712 (50-120)
Sulfur (S) 17.7 (>10)
Micronutrients
Boron 0.8 (0.1-0.5)
Manganese (Mn) 7.6 (1.1-6.3)
Zinc (Zn) 2.7 (1.0-7.6)
Copper (Cu) 0.4 (0.3-0.6)
Iron (Fe) 7.5 (2.7-9.4)
Aluminum (Al) 14 (<75)
Lead (Pb) 0.2 (<22)
Cation Exch. Capacity, meq/100g 21.6
Exch. Acidity, me... 阅读全帖
x*******a
发帖数: 11067
49
来自主题: Living版 - 维护草地摸索中
懒人一个,跟杂草斗争了两年,有些感觉,但是也一定有很多误区,请大家指正吧。
基本就是按照SCOTT的网站指示来的。
https://www.scotts.com/smg/node2/SCOTTSCOM/lawn-care/my-lawn-care-program/
7800014-24600006-s
(1)
夏天除了剪草就不用做什么了,做什么都没有用。好草长的慢,野草长的快。
但是注意剪草的时候留最高或者次高的一档,让好草扎根深一点。草剪短就毁了,我家
前面的草坪去年被劳模减的非常短,然后就开始变秃了。
(2)
秋天开始,OVERSEED,就是把杂草清一清,然后不好的地方补种种子。补种子的时候用
那个SCOTT的LAWN SOIL比较管用,先刨松了土,撒一层LAWN SOIL,撒种子,盖一层
LAWN SOIL.要是天冷了或者干,弄点那种干草或者絮絮一样的东西当被子还是挺好的。
树下补适合SHADE的种子。
(3)
冬天杂草都死了,好事,可是好草也怎么不长。撒了一次SCOTT TURF BUILDER
WINTERGUARD. 撒肥料的时候要注意别贪多别撒重了,会烧草,烧出一条黄黄的... 阅读全帖
n***t
发帖数: 8357
50
来自主题: Living版 - 种新草
没有; 还看得见草籽在TOP SOIL上。
很郁闷。。。
新房的TOP SOIL很少,底下大多是CLAY,不知会不会有影响。但我又加了TOP SOIL,按
道理不会。
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