摘要
马铃薯施用N、P、K肥"3414"肥效试验表明,在厦门市翔安区当地试验条件下,N、P、K肥均影响马铃薯产量,且N、K肥对产量的影响较P肥大;通过建立回归方程并对回归方程进行分析显示,马铃薯产量与N、P、K施肥量之间存在显著的三元二次回归(F=8.1025>F0.05=5.9988;R=0.9737**)关系,推荐N肥马铃薯最高经济产量施肥量为277.64 kg.hm-2,N∶P2O5∶K2O=1∶0.24∶1.93,最高经济产量36657.24 kg.hm-2;N肥最佳经济效益施肥量为229.32 kg.hm-2,N∶P2O5∶K2O=1∶0.30∶1.85,最佳经济效益为36285.41元.hm-2。
The result of ＂3414＂ fertilizer experiment of potato showed that under the local conditions N, P, K influenced the potato yield, and N, K had greater influence than P. By setting a regression equation and analysis of it, it was found that there was a significant relationship of ternary quadratic regression （ F = 8. 1025 〉 F0.05 = 5.9988 ;R = 0.9737 ＊＊ ） between potato yield and N, P, K fertilization amount. For the highest economic yield of potato, N fertilizer has to be applied 277.64 kg · hm^-2, N=P2O5：K20 = 1： 0.24： 1.93, the highest economic yield was 36657.24 kg · hm^-2. To obtain the highest economic effect, N fertilizer has to be applied 229.32 kg · hm^-2 ,N： P2O5： K2O = 1： 0.30： 1.85, the highest economic effect was 36285.41 yuan · hm^-2.
出处
《亚热带农业研究》
2010年第3期172-175,共4页
Subtropical Agriculture Research
