玉米“3414”肥料试验的产量及产值效益分析

Analysis of Yield and Output Value for Maize “3414” Fertilizer Experiments

2010年在湘南红壤丘陵区旱地采用"3414"设计方案进行玉米田间试验,研究不同施肥处理对玉米产量和经济效益等的影响。结果表明:N2P1K1处理(氮、磷、钾施肥量分别为180、37.5、45 kg/hm2)的产量和经济效益最高,分别为5 759.5 kg/hm2,9 687.6元/hm2;若只考虑单因素的影响,对玉米的增产效果是氮肥最大,其次为磷肥,钾肥最小。根据肥料效应方程,得到最佳经济产量为5 659.3 kg/hm2,最佳氮、磷、钾经济施肥量分别为168.9、34.6、38.7 kg/hm2。

A ＂3414＂ field trial was conducted to maize in red soil hilly dry land of Southern Hunan to study the influence of different fertilizer treatments on yield and economic benefits of maize. The results showed that yield and economic benefits of N2P1K1 treatment （nitrogen, phosphorus and potassium fertilizer rate were 180, 37.5 and 45 kg/hm2, respectively） were the highest, and they were 5 759.5 kg/hm2 and 9 687.6 yuardhm2, respectively. If only considered the single factor, the effect of nitrogen fertilizer on yield-increasing was the largest, followed by the phosphate fertilizer, and the potassium fertilizer was the minimum. According to the fertilizer response equation, it could get the optimal economic yield was 5 659.3 kg/hm2, and the best nitrogen, phosphorus and potassium fertilizer rate were 168.9, 34.6 and 38.7 kg/ hm2, respectively.