摘要
经研究获得描述不同氮肥施用量与产量之间的曲线方程：ｙ＝３５．５２＋２４．８１２３Ｘ－０．９０１２Ｘ２；通过对该方程的求导，得出沼泽土种稻的最佳氮肥用量和最佳水稻产量。通过田间取样分析和计算得到沼泽土种稻不同氨肥用量情况下的水稻累计吸氮量和土壤累计供氮量曲线方程及其参数，从而为沼泽土种稻经济、合理、高效的使用化肥，提供了科学依据。
Through research, the curvilinear equation,y=35.52 + 24. 8123x-0. 9012x2, describing the relationship between the amount of nitrogen applied and the yield has been obtained. Through derivation to the equation, the opitum amount of nitrogen applied and yield of rice on suamp land have been computed. Through analysis of field sampies and calculation,the curvilinear equation and parameters about the cumulative nitrogen absorption of rice and the cumulative nitrogtn supply of soil on swamp land with different amount of nitrogtn applied have been obtained. which provided scientific basis for using fertilizers economically,reasonably and efficiently on rice field of swamp, land.
出处
《黑龙江农业科学》
北大核心
1994年第5期10-12,共3页
Heilongjiang Agricultural Sciences
