t*x
2 楼
屋顶涂层含毒性化合物能被雨水冲刷下来,所以屋顶雨水是不适合浇菜的
L*a
3 楼
不要啊~
学把八肥
学把八肥
m*6
4 楼
那么坑爹?我还特地买了一套接雨装置,100多刀呢。
a*r
5 楼
1 month most.
B*s
6 楼
ref?
b*7
9 楼
i approve this message.
m*o
11 楼
怎么都是俩月
S*p
14 楼
多谢提醒。Google到一篇文章专门讨论这个问题的:
http://www.monroeville.pa.us/docs/green/HarvestingTheWaterWithR
"If you live in a highly industrialized area, I recommend using rain for
gardening only," cautions Hoffman.
"If you have any concern about rain quality, have a professional water test
done on a sample."
Unpainted galvanized metal roofing is the best catchment surface for potable
–water systems because it's smooth and nontoxic. Clay or concrete tile and
slate also work well. Asphalt, asbestos, chemically treated wood shingles,
and some painted metal roofs, however, can leach toxic materials and are
recommended only for nonpotable water uses.
上面最后一段,我想现在绝大部分屋顶瓦片都是沥青做的吧,“can leach toxic
materials and are recommended only for nonpotable water uses.”
【在 t****x 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 屋顶涂层含毒性化合物能被雨水冲刷下来,所以屋顶雨水是不适合浇菜的
http://www.monroeville.pa.us/docs/green/HarvestingTheWaterWithR
"If you live in a highly industrialized area, I recommend using rain for
gardening only," cautions Hoffman.
"If you have any concern about rain quality, have a professional water test
done on a sample."
Unpainted galvanized metal roofing is the best catchment surface for potable
–water systems because it's smooth and nontoxic. Clay or concrete tile and
slate also work well. Asphalt, asbestos, chemically treated wood shingles,
and some painted metal roofs, however, can leach toxic materials and are
recommended only for nonpotable water uses.
上面最后一段,我想现在绝大部分屋顶瓦片都是沥青做的吧,“can leach toxic
materials and are recommended only for nonpotable water uses.”
【在 t****x 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 屋顶涂层含毒性化合物能被雨水冲刷下来,所以屋顶雨水是不适合浇菜的
S*p
16 楼
BTW,上面是说不适合饮用,不知道浇菜行不行。
话又说回来,PVC制造的任何管道都可能含有有毒物质,那么自来水,浇水用的管子不
都是PVC的么?
话又说回来,PVC制造的任何管道都可能含有有毒物质,那么自来水,浇水用的管子不
都是PVC的么?
S*p
20 楼
就是非饮用水吧,我猜的
S*p
22 楼
又搜到一篇文章:
Safety of Rooftop/Rain Barrel Collected Water
http://tylertork.com/diyrainbarrels/safety.html
Summary: The consensus is that there is not a clear consensus. There are
significant and reasonable concerns about using rooftop harvested rainwater
for drinking or watering food plants. To paraphrase a famous adage: Caution
is the better part of good health.
You'll have to weigh this information and should probably gather more before
making your own choices and decisions. There are many variables to consider
, including what part of the country you live in and what your roof is
composed of. You can certainly have your water tested, though I suspect that
is a costly procedure.
[Note: If you can send or direct me to evidenced findings specifically about
the use of rooftop harvested rain on edible plants by a credibile source, I
would appreciate it.]
Safety of Rooftop/Rain Barrel Collected Water
http://tylertork.com/diyrainbarrels/safety.html
Summary: The consensus is that there is not a clear consensus. There are
significant and reasonable concerns about using rooftop harvested rainwater
for drinking or watering food plants. To paraphrase a famous adage: Caution
is the better part of good health.
You'll have to weigh this information and should probably gather more before
making your own choices and decisions. There are many variables to consider
, including what part of the country you live in and what your roof is
composed of. You can certainly have your water tested, though I suspect that
is a costly procedure.
[Note: If you can send or direct me to evidenced findings specifically about
the use of rooftop harvested rain on edible plants by a credibile source, I
would appreciate it.]
i*e
24 楼
富贵在天,生死由命!
哈哈,反正我有2垄菜是用雨桶接的水浇的。
哈哈,反正我有2垄菜是用雨桶接的水浇的。
S*p
25 楼
这有一个讨论了4年的帖子:
http://forums2.gardenweb.com/forums/load/organic/msg05171055160
总之没定论。唯一一个有些权威的是一个大学的研究报告:
http://www.uri.edu/ce/healthylandscapes/Rain barrel bro.pdf
好像是说Rain Barrel采集的水用来滴灌是可以的,所以,姜狗,you are safe!
http://forums2.gardenweb.com/forums/load/organic/msg05171055160
总之没定论。唯一一个有些权威的是一个大学的研究报告:
http://www.uri.edu/ce/healthylandscapes/Rain barrel bro.pdf
好像是说Rain Barrel采集的水用来滴灌是可以的,所以,姜狗,you are safe!
t*x
28 楼
To paraphrase a famous adage: Caution
is the better part of good health.
rainwater
Caution
before
consider
【在 S*p 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 又搜到一篇文章:
: Safety of Rooftop/Rain Barrel Collected Water
: http://tylertork.com/diyrainbarrels/safety.html
: Summary: The consensus is that there is not a clear consensus. There are
: significant and reasonable concerns about using rooftop harvested rainwater
: for drinking or watering food plants. To paraphrase a famous adage: Caution
: is the better part of good health.
: You'll have to weigh this information and should probably gather more before
: making your own choices and decisions. There are many variables to consider
: , including what part of the country you live in and what your roof is
is the better part of good health.
rainwater
Caution
before
consider
【在 S*p 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 又搜到一篇文章:
: Safety of Rooftop/Rain Barrel Collected Water
: http://tylertork.com/diyrainbarrels/safety.html
: Summary: The consensus is that there is not a clear consensus. There are
: significant and reasonable concerns about using rooftop harvested rainwater
: for drinking or watering food plants. To paraphrase a famous adage: Caution
: is the better part of good health.
: You'll have to weigh this information and should probably gather more before
: making your own choices and decisions. There are many variables to consider
: , including what part of the country you live in and what your roof is
t*x
29 楼
屋顶水直接入口是肯定不行的,浇菜的话就看植物对水里面的toxic chemical吸收率有
多高了,反正土壤里象重金属之类含量过高,种的菜是不能吃的,其他的有毒物不知道。
沥青刷出来的toxic chemical具体是啥成分不清楚,但是长期浇菜难免不会在菜里面积
存,浓度大小问题,是不是对人有危害需要实验测定。
这是我当年准备买桶的时候做的功课,要是我买了桶,可能会用来浇花浇草坪,省下的
水去浇菜。
这么详尽的分析,版主来几个包子吧。
【在 S*p 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 这有一个讨论了4年的帖子:
: http://forums2.gardenweb.com/forums/load/organic/msg05171055160
: 总之没定论。唯一一个有些权威的是一个大学的研究报告:
: http://www.uri.edu/ce/healthylandscapes/Rain barrel bro.pdf
: 好像是说Rain Barrel采集的水用来滴灌是可以的,所以,姜狗,you are safe!
多高了,反正土壤里象重金属之类含量过高,种的菜是不能吃的,其他的有毒物不知道。
沥青刷出来的toxic chemical具体是啥成分不清楚,但是长期浇菜难免不会在菜里面积
存,浓度大小问题,是不是对人有危害需要实验测定。
这是我当年准备买桶的时候做的功课,要是我买了桶,可能会用来浇花浇草坪,省下的
水去浇菜。
这么详尽的分析,版主来几个包子吧。
【在 S*p 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 这有一个讨论了4年的帖子:
: http://forums2.gardenweb.com/forums/load/organic/msg05171055160
: 总之没定论。唯一一个有些权威的是一个大学的研究报告:
: http://www.uri.edu/ce/healthylandscapes/Rain barrel bro.pdf
: 好像是说Rain Barrel采集的水用来滴灌是可以的,所以,姜狗,you are safe!
w*r
30 楼
觉得第一场久旱之后的雨水最好不要收,雨水一流估计能把房顶的一些化学物质冲走。
之后的雨水应该还行吧,特别是rain barrel 那么大, 象个sedimentation basin 一样
,估计也能沉积点bad stuff.
之后的雨水应该还行吧,特别是rain barrel 那么大, 象个sedimentation basin 一样
,估计也能沉积点bad stuff.
T*U
31 楼
看来以后从店里买菜,要先化验。谁知道有没有种在重金属的土壤里。
T*U
32 楼
屋顶上的水留到湖里,被抽到水厂,然后就入口了。直接间接差不多啊。
S*p
35 楼
有道理...
去年我家邻居(一个老印医生)居然买了很多Top Soil种西红柿,我和他说Top Soil里
面可能重金属超标,应该买Garden Soil,最好是Organic Garden Soil,他还将信将疑
,不知道最后收获的西红柿是不是都吃了还是送人了
重金属超标可不是闹着玩的
【在 t****x 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 店里的菜属于非控制范围内,你家种的菜是可以控制的。
: 重金属不是我拍脑袋想出来的,土壤铅含量EPA是有标准的-- EPA limit of 400 ppm
: 很多东西在人们认识到有危害之前是没防范当然也不会有规定的标准的,往前看,罗马
: 帝国的导水系统用铅做的,毒害儿童,往近了看,人们意识到DDT危害前大量使用了很
: 久。
去年我家邻居(一个老印医生)居然买了很多Top Soil种西红柿,我和他说Top Soil里
面可能重金属超标,应该买Garden Soil,最好是Organic Garden Soil,他还将信将疑
,不知道最后收获的西红柿是不是都吃了还是送人了
重金属超标可不是闹着玩的
【在 t****x 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 店里的菜属于非控制范围内,你家种的菜是可以控制的。
: 重金属不是我拍脑袋想出来的,土壤铅含量EPA是有标准的-- EPA limit of 400 ppm
: 很多东西在人们认识到有危害之前是没防范当然也不会有规定的标准的,往前看,罗马
: 帝国的导水系统用铅做的,毒害儿童,往近了看,人们意识到DDT危害前大量使用了很
: 久。
c*p
37 楼
太可怕了。不知道我家后院土怎么样。到哪里买测试重金属的工具阿?
w*w
38 楼
怀疑。放狗往往容易看到你想看到的东西,而不是中立的内容。
test
potable
and
【在 S*p 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 多谢提醒。Google到一篇文章专门讨论这个问题的:
: http://www.monroeville.pa.us/docs/green/HarvestingTheWaterWithR
: "If you live in a highly industrialized area, I recommend using rain for
: gardening only," cautions Hoffman.
: "If you have any concern about rain quality, have a professional water test
: done on a sample."
: Unpainted galvanized metal roofing is the best catchment surface for potable
: –water systems because it's smooth and nontoxic. Clay or concrete tile and
: slate also work well. Asphalt, asbestos, chemically treated wood shingles,
: and some painted metal roofs, however, can leach toxic materials and are
test
potable
and
【在 S*p 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 多谢提醒。Google到一篇文章专门讨论这个问题的:
: http://www.monroeville.pa.us/docs/green/HarvestingTheWaterWithR
: "If you live in a highly industrialized area, I recommend using rain for
: gardening only," cautions Hoffman.
: "If you have any concern about rain quality, have a professional water test
: done on a sample."
: Unpainted galvanized metal roofing is the best catchment surface for potable
: –water systems because it's smooth and nontoxic. Clay or concrete tile and
: slate also work well. Asphalt, asbestos, chemically treated wood shingles,
: and some painted metal roofs, however, can leach toxic materials and are
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