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1.提早除去空秆、病株和无效穗。玉米孕穗后,要及早彻底割除空秆玉米和病株玉米,这样可以改善田间通风透光条件,减少肥料消耗,利于植株正常生长发育,促使大穗大粒的形成。2.巧施攻穗肥。玉米追肥要因地制宜,每亩可追施碳铵50公斤或尿素16公斤~20公斤。当田间最大持水量低于80%时要抓紧进行灌溉,可采用沟灌、隔沟灌等方法,要肥水结合,施肥后及时浇水。3.人工辅助授粉。玉米是同株异
1. Early removal of empty stalks, diseased plants and invalid spikes. After the booting of corn, the empty stalk corn and diseased corn should be completely cut off as soon as possible, which can improve the ventilation and light conditions in the field, reduce the fertilizer consumption, and facilitate the normal growth and development of the plant and promote the formation of big ears and big grains. 2. Qiao Shi attack panicle fat. Corn topdressing should be based on conditions, per acre can be topdressing ammonium bicarbonate 50 kg or urea 16 kg ~ 20 kg. When the maximum water holding capacity of less than 80% of the field should pay close attention to irrigation, furrow irrigation can be used, separated ditch irrigation and other methods, to fertilizer and water, timely watering after fertilization. Artificial assisted pollination. Corn is the same