田间持水量（field moisture capacity）是指当土壤中重力水全部排除，而保留全部毛管水和束缚水时的土壤含水量，是大多数植物可利用的土壤水上限。
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The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
Field studies also showed that proper concentration of polymers could effectively improve water supply and moisture holding capacity, so as to improve the survival rate of seedlings.
野外应用表明，适当浓度的保水剂可以有效提高土壤保水能力和供水能力，提高苗木根冠比和成活率。
The effects of wilting point, field capacity and initial amount of available soil moisture in root zone on soil moisture were positive.
凋萎湿度、田间持水量、整个根区初始土壤有效含水量对土壤水分影响为正效应；
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