新乡市不同肥力水平棉花“3414”肥料效应研究 Ⅰ.棉花氮、磷、钾优化施肥配比研究

通过棉花氮、磷、钾＂3414＂田间试验测得的数据,分别建立获嘉位庄高产田、延津东屯中高产田、卫辉虎头庄中低产田以籽棉产量为目标函数的氮、磷、钾三元二次回归模型,通过模拟仿真因素取值的频率分析,分别求得3个试点高产的N、P2O5、K2O最优施肥配比为：位庄高产点施N 380.3～394.94 kg/hm2、P2O5192.81～200.23 kg/hm2、K2O 297.80～311.4 kg/hm2,籽棉产量可达4 456.07～4 483.42 kg/hm2;延津东屯中高产点,施N 94.08～112.54 kg/hm2、P2O5 48.85～59.0 kg/hm2、K2O 263.34～277.96 kg/hm2,期望产量为3 906.63～3 962.18 kg/hm2;卫辉虎头庄中低产点,施N 243.76～271.59 kg/hm2、P2O5 210.48～214.00 kg/hm2、K2O 286.73～301.02 kg/hm2,期望产量为3 317.41～3 352.80 kg/hm2。并对各类模型的两因素互作效应及单因素效应作了剖析。

Study on 3414 Fertilizer Effect of Cotton at Different Fertility Level in Xinxiang-Optimized Fertilizer Rate of Nitrogen, Phosphorus and Potassium

The data from 3414 fertilizer effect experiment of cotton about nitrogen,phosphorus and potassium were used to establish the regression model for the high-yield field in Weizhuang Village,Huojia,medium-high-yield field in Dongtun Village,Yanjin,and low-yield field in Hutouzhuang Village,Weihui,respectively.Through the frequency analysis method by simulating factors,the optimum fertilizer rate of N,P2O5 and K2O for high-yield field was 380.3-394.94 kg/hm2,192.81-200.23 kg/hm2 and 297.80-311.4 kg/hm2,respectively,and the seed cotton yield could reach 4 456.07-4 483.42 kg/hm2.The optimum fertilizer rate of N,P2O5 and K2O for medium-high yield field was 94.08-112.54 kg/hm2,48.85-59.0 kg/hm2 and 263.34-277.96 kg/hm2,respectively,and the seed cotton yield could reach 3 906.63-3 962.18 kg/hm2.The optimum fertilizer rate of N,P2O5 and K2O for medium-low yield was 43.76-271.59 kg/hm2,210.48-214.00 kg/hm2 and 286.73-301.02 kg/hm2,respectively,and the seed cotton yield was 3 317.41-3 352.80 kg/hm2.The interaction effect of two factors and the single factor effect in each modal were also analyzed.