Effects of Different N, P and K Fertilizer Levels on Growing Characters and Yield of Corn

不同N、P、K施肥量对玉米生育性状和产量的影响（英文）

[Objective] To provide scientific guidance for corn production in Suijiang County of Yunnan Province, explore the best recommended fertilization of corn, and provide a scientific basis for formulating the formula fertilization of corn in Suijiang County. [Method] Through carrying out ＂3414＂ corn field fertilizer efficiency experiment in Suijiang County, with the help of ＂3414＂ field experiment design and data analysis management system＂ software, the ternary quadratic and one-variable quadratic fertilizer efficiency equations on corn yield were analyzed. [Result] The optimum fertilization scheme for corn in the region was as follows： when pure N, pure P2O5 and K2O were respectively 244.38, 58.75 and 107.38 kg/hm^2, the the obtained best yield of corn was 6 975.60 kg/hm^2, and the maximum benefit was 16 888.58RMB/hm^2. [Conclusion] The reasonable formula of N, P and K fertilizers can not only improve the yield of corn, but also increase economic benefit, having certain reference significance to the development of formula fertilization of corn in Suijiang County.

[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分析。[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 kg、58.75 kg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,又能增加经济效益,对绥江县开展玉米配方施肥具有指导意义。