摘要
为明确冀西北春谷子生产上合理的施肥量,指导该区谷子生产合理施肥,采用田间试验法,在蔚县选择代王城镇大水门头村等肥力水平不同的10个试验点进行了春谷子"3414+1"肥料效应试验,并建立了肥料施用量与谷子产量在高肥力水平时的三元二次回归模型以及在高、中、低肥力水平时的一元二次回归模型;明确了蔚县不同肥力地块春谷子最高产量施肥量和经济最佳产量施肥量的范围。结果表明:春谷子最高产量时的氮、磷、钾肥施用量分别为高肥力土壤195～225、60～90、75～105 kg/hm2,中肥力土壤150～180、60～90、60～75 kg/hm2,低肥力土壤150～165、45～75、60～75 kg/hm2;经济最佳产量时的氮、磷、钾肥施用量分别为高肥力土壤150～180、45～75、60～90 kg/hm2,中肥力土壤135～150、45～75、45～60 kg/hm2,低肥力土壤135～150、45～75、0～45 kg/hm2。
In order to determine the reasonable fertilization of spring millet , guide the millet production of northwestern Hebei Province, 10 points of different fertility levels in Dashuimentou Village of Daiwangcheng Town of Yuxian County were chosen to do 3414 ＋1 fertilizer effect experiment in field , the quadratic regression model with three unknown in high fertility level and quadratic regression model with one unknown in high , medium and low fertility levels between the fertilizer amount and millet yield were established , and the fertilizer amounts of maximum yield and most economical yield obtained in different fertility plots of Yuxian were determined.The results showed that N, P, K fertilizer application when the maximum yield obtained respectively were 195 -225, 60 -90, 75-105 kg/hm2 in high fertility soil,150-180 , 60-90, 60-75 kg/hm2 in medium fertility soil, 150-165, 45-75, 60-75 kg/hm2 in low fertility soil.The N, P, K fertilizer application when the most economical yield obtained respectively were 150-180, 45-75, 60-90 kg/hm2 in high fertility soil, 135-150, 45 -75, 45-60 kg/hm2 in medium fertility soil, 135-150, 45-75, 0-45 kg/hm2 in low fertility soil.
出处
《河北农业科学》
2013年第6期1-5,共5页
Journal of Hebei Agricultural Sciences
基金
国家测土配方施肥资金补贴项目(2011-217)
关键词
春谷子
3414试验
肥料效应
施肥量
产量
Spring millet
3414 fertilizer experiment
Fertilizer effect
Fertilization rate
Yield
