丢糟有机肥配施化肥对高粱产量的影响

Effects of Distillers’ Grains Organic Fertilizer and Chemical Fertilizer on Sorghum Yield

为构建丢糟有机肥配施化肥对高粱产量的数学模型,采用二次回归通用旋转组合设计,设有机肥、氮肥、磷肥、钾肥4个栽培因素,通过降维分析,研究不同施肥对高粱产量的影响,通过频次分析建立高效栽培模式。结果表明,各因素对高粱产量均有重要影响,其大小表现为氮肥>有机肥>磷肥=钾肥,表明宜糯红2号的主控措施为氮肥和有机肥;氮肥与有机肥、磷肥与钾肥之间有协同增产和增效作用;宜糯红2号的高效栽培方式:施有机肥3627~4773 kg/hm 2,施氮(尿素)194~240 kg/hm 2,施磷(过磷酸钙)87~213 kg/hm 2,施钾(硫酸钾)87~213 kg/hm 2,可实现5250 kg/hm 2的产量。该研究为川南高粱的高产、健康、无公害生产提供技术参考。

In order to construct a mathematical model of sorghum yield by using waste grains organic fertilizer combined with chemical fertilizer,this experiment adopted the general rotation combination design of quadratic regression,and set up four cultivation factors including organic fertilizer,nitrogen fertilizer,phosphate fertilizer and potassium fertilizer.Through dimensional reduction analysis,the influence of different factors on sorghum yield was studied,and the efficient cultivation mode was established through frequency analysis.The results showed that all the factors had important effects on sorghum yield,and the magnitude was as follows:organic fertilizer>nitrogen fertilizer>phosphate fertilizer=potash fertilizer,indicating that the main control measures of Yinuohong 2 were nitrogen fertilizer and organic fertilizer.There were synergistic effects between nitrogen fertilizer and organic fertilizer,phosphate fertilizer and potassium fertilizer.The high-efficient cultivation mode of Yinuohong 2 was application of organic fertilizer 3627-4773 kg/hm 2,application of nitrogen(urea)194-240 kg/hm 2,application of phosphorus(superphosphate)87-213 kg/hm 2,application of potassium(potassium sulfate)87-213 kg/hm 2,the yield can realize 5250 kg/hm 2.This study provides a technical reference for high yield,healthy and pollution-free production of sorghum in south Sichuan.