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。
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.
农业，牧场和作物科学专业主要通过物理学，化学，及生物学进行作物栽培和土壤的研究。
Agronomy. range and crop science on the chemical. physical. and biological relationships of crops and the soils nurturing them.
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