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灌水效率
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灌水效率
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工学
灌区管理体制
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irrigation efficiency
灌水效率
入渗并贮存在作物根系统活动层中的灌溉水量(以平均水深表示,毫米)占田间总使用的灌溉水量(平均水深,毫米)的比率。
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Stepan Petrovich Schipachev
Stepan Petrovich Shevyrev
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Step-empress of Jingtai
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step factor
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