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棉花花铃期施肥,可以增加铃重,提高成铃率,是行之有效的增产措施.本文报道花铃期施氮肥对棉铃发育和糖氮代谢的影响,阐明其生理特性,为施肥提供理论根据.材料和方法供试品种为岱字棉15号.1979年5月4日播种,5月12日齐苗,每亩3636株.6月15日现蕾;7月11日开花.试验分两个处理:(1)施花铃肥:5月21日亩施苗肥硫铵15斤,6月30日亩施当家肥菜籽饼100斤,7月21日亩施花铃肥硫铵30斤.(2)不施花铃肥:5月21日亩施苗肥硫铵15斤,未施当家肥及花铃肥.
Cotton boll-age fertilization can increase the boll weight and increase the boll rate, which is an effective stimulation.This paper reports the effect of nitrogen fertilizer on boll development and sugar-nitrogen metabolism in flower-boll stage, clarifies its physiological characteristics and provides theory for fertilization According to materials and methods for the test varieties Dai word cotton 15. May 4, 1979 sowing, May 12 Qi Miao, 3636 acres per acre. June 15 buds; July 11 blossom test points Two treatment: (1) Hua Lingling fertilizer: May 21 Mushu 15 kg of ammonium sulfate fertilizer, June 30 Mushi when the fertilizer seed cake 100 kg, July 21 Mulan boll fertilizer ammonium 30 kg. 2) No flower boll fertilizer: May 21 Mushu 15 kg of ammonium sulfate, did not apply fertilizer and flower bell fertilizer.