阿克苏市棉花氮磷钾肥利用率试验研究与分析

研究阿克苏市棉花氮、磷、钾肥利用效率，进而指导阿克苏市棉花科学合理施肥，提高化肥利用率。以棉花为试验材料，设置氮磷钾、无氮、无磷和无钾4个处理，在收获期对棉花株高、单铃重、产量、含水率、含杂率、收获指数、氮磷钾利用率等指标进行测定。结果表明：全年亩施65kg尿素、20kg重过磷酸钙和20kg硫酸钾能提高阿克苏棉花株高、平均单铃重、产量和收获指数，降低了含杂率和含水率；棉花氮、磷、钾利用率分别为40.4%、 19.1%和 43.9%。

Experimental study and analysis of nitrogen, phosphorus and potassium Fertilizer utilization rate of cotton in Aksu City

Abstract: To study the utilization efficiency of nitrogen, phosphorus and potassium fertilizer for cotton in Aksu City, so as to guide the scientific and rational fertilization of cotton in Aksu City and improve the utilization rate of fertilizer. Cotton was used as experimental material, four treatments were set up, including nitrogen, phosphorus and potassium. Plant height, boll weight, yield, water content, impurity content, harvest index, nitrogen, phosphorus and potassium utilization rate of cotton were measured at harvest stage. The results showed that the annual application of 65kg urea, 20kg heavy superphosphate and 20kg potassium sulfate could increase plant height, average boll weight, yield and harvest index of Aksu cotton, and reduce the litter and water content of Aksu cotton. The utilization rates of nitrogen, phosphorus and potassium in cotton were 40.4%, 19.1% and 43.9%, respectively.