摘要
采用氮、磷、钾3因素4水平14个处理的正交(回归)试验,研究了薄沙红泥土种植杂交玉米渝单5号氮、磷、钾化肥的最佳施用量,通过回归方程分析,建立了渝单5号产量与氮、磷、钾施用量的肥料效应函数模型,加上线性平台拟合,结合薄沙红泥土养分状况、气候、渝单5号品种特性、栽培技术、相关物价和施肥效益等情况综合评估与分析,确定钟山县薄沙红泥土种植渝单5号最佳施肥量:N 228.0 kg/hm2、P2O567.5 kg/hm2、K2O 118.5 kg/hm2。
The optimal fertilizer rate of nitrogen(N), phosphate(P) and potassium(K) for hybrid corn variety Yudan No.5 planting in thin sand-red mud soil was studied through '3414' orthogonal regression experiment. Through analyzing the regression equation, the fertilizer effect function model between Yudan No.5 yield and N, P, K fertilizer rates was established, then fitting in linear platform and combined with comprehensive evaluating and analyzing the nutrients situation of soil nutrient condition, climate, variety characteristics, culture techniques, relevant prices and fertilizer efficiency, the optimal fertilizer rate of N, P2O5and K2O for Yudan No.5 planting in thin sand-red mud soil in Zhongshan County was 228.0 kg/hm2, 67.5 kg/hm2 and 118.5 kg/hm2, respectively.
出处
《湖南农业科学》
2013年第10期56-59,共4页
Hunan Agricultural Sciences
关键词
渝单5号
杂交玉米
最佳产量
氮磷钾
最佳用量
Yudan No.5
hybrid corn
optimal yield
N,K and P
optimal fertilizer rate
