不同N、P、K施肥量对玉米生育性状和产量的影响

Effects of Different N,P,K Fertilizer on Maize Growth Characters and Yield

[目的]为了科学指导云南省绥江县玉米生产,探索玉米最佳推荐施肥量,为制定绥江县玉米配方施肥提供科学依据。[方法]通过开展绥江县玉米"3414"田间肥效试验,借助"3414田间试验设计与数据分析管理系统"软件,对玉米产量三元二次和一元二次肥料效应方程进行相关研究。[结果]该区域玉米最佳施肥方案为:纯N、纯P2O5和纯K2O分别为244.38、58.75和107.38 kg/hm2,获得最佳产量6 975.60 kg/hm2,最大效益16 888.58元/hm2。[结论]合理配施N、P、K肥,既可提高玉米产量,又可增加经济效益,对绥江县开展玉米配方施肥具有指导意义。

[ Objective] To provide scientific guidance for maize production in Suijiang County, Yunnan Province, explore the best recommended fertilization of maize, and provide scientific basis for the formulation of the corn of formula fertilization in Suijiang County. [ Method ] Through the development of Suijiang County ＂3414＂ corn field fertilizer experiment, with the help of ＂experiment design and data of 3414 field management system＂ software, corn yield ternary quadratic one yuan secondary fertilizer effect equation was analyzed. [ Result] The regional optimum fertilization scheme for corn： Pure N, pure P205 and K20 were 244.38, 58.75 and 107.38 kg/hm^2, obtain the best yield of 6 975.60 kg/hm^2, the maximum benefits 16 888.58 yuan/hm^2. [ Conclusion] The reasonable formula of N fertilizer, P fertilizer, K fertilizer, which can increase the yield of maize, but also can increase the economic benefit, has the guiding sense to the development of formula fertilization of maize in Suijiang County.