[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 fert...[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.展开更多
基金Supported by Subsidy Project of Soil Testing and Fertilizer Recommendation by Ministry of Agriculture of the People’s Republic of China(Nong Ban Cai〔2012〕42,Yun Nong Cai〔2012〕29)~~
文摘[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.
