摘要
[目的]明确冀东地区棉田适宜的氮肥施用量。[方法]2009、2010年在唐海县滨海盐碱地进行了2年的定位试验,研究不同施氮量对滨棉2号(Gossypium hirsutum L.)生长发育及产量的影响。[结果]不施氮肥对棉花生长发育影响较大,棉花株高、果枝数、成铃数均降低,籽棉产量显著低于各施氮处理;随氮肥用量的增加,棉花株高、果枝数、成铃数有逐渐增加的趋势;氮肥用量对棉花生长发育及产量有重要影响,但过多施用氮肥对增产无益。[结论]冀东盐碱地棉花适宜施N量为337.5 kg/hm2。
[Objective] In order to clear the optimum nitrogen amount in cotton field in Eastern Hebei.[Method] In 2009 and 2010 in Tanghai County,the effects of different nitrogen amounts on the growth and development and yield of cotton were studied in saline fields.[Result] The results indicated that no nitrogen had big effects on the growth and development of Binmian No.2,and comparing with different nitrogen application treatments,its plant height,fruit branch number,boll setting number all decreased,and seed cotton yield inclined significantly.With the increasing of nitrogen amount,plant height,fruit branch number and boll setting number of cotton had a rising trend.Different nitrogen amounts had important influences on the growth and development and yield of cotton,but the excess nitrogen was not benefit on yield increasing.[Conclusion] The optimum nitrogen amount was 337.5 kg/hm2 in saline fields of Eastern Hebei.
出处
《安徽农业科学》
CAS
2012年第25期12408-12409,12422,共3页
Journal of Anhui Agricultural Sciences
基金
河北省科技厅项目(10820205D)
关键词
盐碱地
棉花
氮肥
施用量
生长发育
产量
Saline fields
Cotton
Nitrogen fertilizer
Application amount
Growth and development
Yield
