Soil drought reduced moisture content and nitrogenase activity of nodules. 土壤干旱降低田菁根瘤的含水量和固氮活性。
Weed control efficacy was lower and weeds were less sensitive in soil water stress treatment than in irrigated treatment before spraying. 用藥前后土壤干旱可以使一些除草劑殺草速度變慢，除草效果明顯降低。
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