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水稻中怎样才算是有效穗

更新时间: 2020-09-18 00:00:00     

水稻每穗结实粒在5粒以上称有效穗。影响有效穗的形成的因素主要有:日照时间、每平方米基本苗数、气温。在进行水稻种植时,适当提高基本苗数,有利于提高有效穗数,同时在充足的日照条件下,也有利于有效穗数的提高,但在适温条件下,平均温度与有效穗呈一定的负相关。

关键词: 水稻 怎样 算是 有效

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