造纸黑液固化物有机NPK复合肥对棉花的效应研究

A Study on the Effect of Applying the Compound Fertilizer of Organic NPK from the Concretions of Papermaking Black-Liguid on Cotton

通过对棉花施用造纸黑液固化物有机NPK复合肥的效果研究表明 :棉田施用造纸黑液固化物有机NPK复合肥确有较好的肥效 ,其籽棉和皮棉产量达 4749.15kg/hm2 和 2 0 6 3 .5 5kg/hm2 。相当于施大壮 1(仅减产 5 .78%～ 3.97% ) ,且较施大壮 2增幅达 17.43%～ 18.6 1%。施用于棉花上的效应主要表现在前期植株生长较旺盛 ,第一果枝着生节位较低 ,果枝数、总果节数也有增加。因此 ,有利于多结伏前桃 ,棉花早发 ,其“三桃”比例更为合理 ,从而实现了棉花中期稳长多结 ,后期不早衰。

This paper systematically studies the effect of the compound fertilizer of organic NPK from the concretions of papermaking black-liquid on cotton yield and quality. Applying the compound fertilizer can bring about relatively favorable result with the yields of unginned and ginned cotton respectively reaching 4749.15kg/hm 2 and 2063.55kg/hm 2. So it has almost the same effect as Shidazhuangl (with only 5.78%～3.97% yield loss), and it increases the yield by 17.43%～18.61% compared with Shidazhuang 2. The effect mainly lies in comparatively vigorous early growth of cotton plant, lower attachment position of fruit branch as well as more fruit branches and fruit nodes, which contributes to more bolls before hot summer days, earlier ripening of cotton and more reasonable ratio of “the three kind of boll”. Therefore, the cotton plant maintains steady growth and better fruitage in the middle stage with no premature senescence. Besides, the compound fertilizer has little effect on cotton quality.