摘要
本文研究了高产杂交水稻的施肥量,通过回归分析建立的土壤养分自然供给量与土壤速效养分含量之间的双曲线方程和水稻产量与养分吸收量之间的幂函数方程,阐明了土壤养分自然供给量随土壤养分含量的变化而变化的规律和水稻产量与养分吸收量之间的关系。同时,介绍了根据土壤养分含量测定值和由这两个方程演算而得的值,运用公式计算水稻计划产量的施肥量的方法,为高产水稻的计量施肥提供了参考依据。
This paper deals with the fertilizer rate for high—yield hybrid rice. By using the regression analysis, a hyperbola equation between soil natural nutrientsupplying rate and available nutrient content and a power functional equation between hybrid rice yield and nutrient uptake have been set up. These equations illustrate the law that soil natural nutrient-supplying rate is determined by soil nutrient content, and the correlation between rice yield and nutrient uptake. Moreover, this paper introduces a method that uses a formula to calculate fertilizer rate of rice planned—yield in accordance with a determination value of soil nutrient content and a value calculated from the two equations, providing a reference for metrological fertilization of high-yield rice.
关键词
水稻
施肥
杂交稻
Rice yield, Soil natural nutrient-supplying rate, Uptake amount, Fertilizer rate
