永济市棉花“3414”平衡施肥试验研究

Research on "3414" Cotton Balance Fertilizer Test of Yongji City

以氮肥、磷肥、钾肥为试验因子,采用"3414"施肥方案设计,试图摸清土壤养分校正系数、肥料利用率等施肥参数,并提出了不同肥力棉田田间优化施肥方案,从而为建立山西省"测土配方施肥专家咨询系统"奠定基础,通过试验得出以下结果:一是通过回归分析建立了不同产量目标的数学模型;二是通过电算得出不同产量目标的田间优化施肥方案;三是通过田间产量得出不同肥料的增产效果和肥料当季利用率。

Taking nitrogenous fertilizer,phosphate fertilizer and potash fertilizer as the experimental factors,the test uses "3414" fertilizing scheme to determine soil nutrient correction index and fertilizer utilization,and presents the prioritization fertilizing scheme of cotton land.The test shows that: To establish mathematical model of different output goal by regression analysis;to obtain prioritization scheme of different output goal by zooming;to get the output increase effect and fertilizer utilization rati...