摘要
在四川棉区研究不同氮肥施用水平对棉花产量及经济效益的影响。试验结果表明:在一定水平下,随着氮肥施用量的增加棉花株高、单株果节数和产量相应提高;当纯氮施用达到450kg/hm2时,其产量、经济效益达到最高,而当施用水平达到600kg/hm2时,其经济效益还低于零氮水平。在一定氮肥施用水平的基础上,配合施用一定数量有机肥料,其经济效益最高。
In this paper effects of different nitrogen levels on cotton yield and effectiveness in Sichuan were studied. The results showed that cotton plant height, fruiting section number individual and yield increased by nitrogen level added. When nitrogen fertilizer reached 450 kg/hm^2, yield, economic benefit reached the maximum. Application levels reached 600 kg/ hm^2, its economic benefits was lower than zero nitrogen level. When organic fertilizer was application on the basis of a certain nitrogen fertilizer level, its economic benefits was the highest
出处
《棉花科学》
2011年第6期25-28,共4页
Cotton Sciences
