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.[