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根外追肥的特点有哪些

更新时间: 2020-10-25 00:00:00     

根外追肥的特点有:

1、直接供给作物有效养分,防止在土壤中被固定或转化而降低肥效;

2、当要系的吸收力弱时进行根外施肥,作物容易吸收到养分;

3、叶片对养分的吸收及转化比根快,能及时补充作物对养分的需要;

4、根外施肥适宜机械化,并经济有效。节省时间和劳力。

关键词: 追肥 特点 哪些

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