Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than they can get from rainfall or from the air -- from, say, coastal or mountain fog.
有些树木在没有水的情况下可以生存很长时间，比如那些生长在沙漠的树。但是其它的树可能除了从降水和空气中获取水分之外，还需要从其它地方获取更多的水分,例如沿海或山上的雾气。
The soil stores moisture during cooler weather. But most of that moisture is gone by the middle or end of the hottest months of the year.
土壤可以在较冷的天气下储存水分。但大多数水分都会在一年中最热的那几个月的中期或末期消耗完。
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They can also turn yellow. Yellowing can be a sign of too much water. But it can also be a warning sign of too little water.
泛黄又可能是水分过剩的迹象，或者是植物太缺水的警报信号。
The Vacaville Tree Foundation is a volunteer community group in California. It has advice for watering newly planted trees and established trees.
Vacaville树木基金会是加州的一个志愿者社区组织，它对新种植并浇灌过水的树和以成长的树有建议。
esstentially ,what we are saying is rioting for form unprofit .this is not people expressing their anger against stay this is people thinking it would be ncie to get a slice of the edge
esstentially ,what we are saying is rioting for form unprofit .this is not people expressing their anger against stay this is people thinking it would be ncie to get a slice of the edge
发表于 2011-9-5 11:07
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发表于 2011-9-6 09:32
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