Recent achievements of appropriate soil moisture and lower limit of soil drought indices provided an important basis of soil physics for agricultural water supply of low quota.
土壤适宜含水量和土壤干旱下限指标的最新研究成果，为低定额的农业供水提供了土壤物理学的重要依据。
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The new mode of teaching about carrying out physics demonstration experiment is presented in the light of limited hours and arduous task of agricultural college in this paper.