液体氮肥对棉花生长、产量及品质的影响

Effect of Liquid Nitrogen Fertilizer on Growth, Yield and Quality of Cotton

摘要: 试验研究了施用液体氮肥对棉花农艺性状、土壤养分、产量和品质的影响。结果表明：施用液体氮肥后，能提升棉花株高、果枝数和蕾数；土壤有效磷含量较习惯施肥增加60.8%~111.7%；铃期土壤含盐量比习惯施肥低34.0%，同时降低生育期内土壤pH值；籽棉和皮棉产量分别增加7.9%和3.3%，产值和收益增加8.9%和22.1%，在增加棉花产量的同时，也提升了棉花品质，符合纺织业对棉纤维品质提出的“双30”要求。本研究为南疆棉花高产和液体氮肥的大面积应用与推广提供了理论支撑。

Abstract: The effects of liquid nitrogen fertilizer application on cotton agronomic traits, soil nutrients, yield and quality were investigated in the experiment. The results showed that: the application of liquid nitrogen fertilizer can improve the height of cotton plants, the number of fruiting branches and the number of buds; the effective phosphorus content of the soil increased by 60.8%~111.7% compared with the customary application of fertilizer; the salt content of the soil in the boll stage was 34.0% lower than the customary application of fertilizer, and at the same time, it reduced the pH value of the soil in the reproductive period; the production of seed cotton and lint was increased by 7.9% and 3.3%, and the production value and income were increased by 8.9% and 22.1%, and the cotton quality was also improved at the same time, which is in line with the “cotton fiber quality” proposed by the textile industry. Cotton yield, but also improve the quality of cotton, in line with the textile industry on the quality of cotton fiber “double 30” requirements. This study provides theoretical support for the high yield of cotton and the large-scale application and promotion of liquid nitrogen fertilizer in southern Xinjiang.