为提高棉花产量,改善棉花品质,建立棉花的科学配方施肥体系,通过在棉花上进行3414试验,探索棉花需肥规律,掌握棉花最佳施肥参数,获得棉花的N、P、K最佳施肥数量。通过试验表明在山东嘉祥县石灰性潮壤土上,棉花N、P、K最佳施肥量分别为15.31kg/666.7m~2,8.37kg/666.7m2,8.9kg/666.7m~2。中等地力水平情况下,要重视对土壤培肥地力。肥料施用均衡条件下,棉花在生育期表现出优良的性状,是棉花优质高产的重要因素。 In order to improve cotton yield and improve cotton quality, a scientific formula fertilization system for cotton was established. Based on the 3414 test on cotton, the rule of cotton fertilizer requirement was explored, and the optimum fertilization parameters of cotton were obtained to obtain the optimum fertilization amount of cotton N, P, K . The results showed that the best N, P and K fertilizers were 15.31kg / 666.7m ~ 2, 8.37kg / 666.7m2 and 8.9kg / 666.7m ~ 2 respectively on the calcareous loam soil in Jiaxiang County, Shandong Province. In the case of medium level of soil fertility, soil fertility should be emphasized. Under the condition of balanced application of fertilizer, cotton shows good traits during the growth stage and is an important factor of cotton with high yield and good quality.