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1玉米花粒期管理1.1巧施粒肥所谓巧施应看大田植株长相而定,在穗肥充足,植株长相好,叶色浓绿,无早衰现象的田块可不施粒肥,以免延长生育期。若穗肥不足,植株发生脱肥现象,则应补施粒肥。粒肥施用的原则是宜早勿迟。施尿素75kg/hm2或碳铵150～225kg/hm2,打穴深施。也可用1%～2%尿素与0.4%～0.5%的磷酸二氢钾混合液进行叶面喷施。
1 Poplar grain management 1.1 Qiao Shi fertilizers The so-called Qiao Shi should see the appearance of plants in the field, in the panicle adequate, good plants, leaf color dark green, no premature decline of the phenomenon of plots can not fertilizer, so as not to extend the growth period. If insufficient panicle, the phenomenon of plants take off the body, you should fill fertilizer fertilizer. The principle of application of grain fertilizer should not be late. Apply urea 75kg / hm2 or ammonium bicarbonate 150 ~ 225kg / hm2, hole deep facilities. Can also be 1% ~ 2% urea and 0.4% ~ 0.5% potassium dihydrogen phosphate mixture for foliar spray.