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一、培养健壮的花穗。在抽穗期对过长的主花穗(8厘米以上)进行人工短截,使其形成短花穗,调节花量,提高雌花比例。二、施促壮花肥。花期每株施粪水100公斤或复合肥1.5～2公斤,在此基础上根外喷0.2%尿素加0.3%磷酸二氢钾加0.1%硫酸镁液
First, cultivate robust flower spikes. In the heading of the long main spikes (8 cm above) artificial short cut, so that the formation of short spikes, adjust the flowering, increase the proportion of female flowers. Second, Shi Zhuang Zhuang fat. Florescence fertilizer per plant 100 kg or compound fertilizer 1.5 to 2 kg, on the basis of root spray 0.2% urea plus 0.3% potassium dihydrogen phosphate plus 0.1% magnesium sulfate solution