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大豆连作为什么有害?

问答题
2021-12-30 09:07
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正确答案

大豆最忌连作重茬。连作的最大害处是,根系分泌的有机酸对根系有毒害作用,另外,还可导致病虫害蔓延,使土壤中磷、钾过分消耗。所以大豆最好实行3年以上的轮作。


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