摘要
供试土壤为细砂（粉砂）质壤上，２ｍ土层有效水贮量总计为４５８．３ｍｍ，其中，０～９３ｃｍ细质矽土层为主要供水土层，在９３～１５５ｃｍ有一粘土夹层，它能提供的有技水量很少，但它使砂层产生了近１００ｍｍ的顶托水量，因此，供试土壤有一个良好的水分性状，其２ｍ土层有效水贮量基本能满足作物的需水要求。
The testing soil is fine sandy loam. The total effective water content in the upper layer of 2m depth is 458. 3 mm in which the main water supply layer is fine sandy soil in 0 -93 cm depth. There is a clay layer in 93￣155 cm depth which can supply few of effective water but can yield 100 mm of standing water in the sandy layer.Therefore, the testing soil has a very fine moisture property and the effective water contest in 2 m depth layer can basically satisfy water demand of crops.
出处
《中国农村水利水电》
1996年第4期29-31,共3页
China Rural Water and Hydropower
关键词
砂土
土壤水分状况
土壤水分特征
sandy soil soil moisture property soil moistcue property curve.[
