摘要
采用正交区组二次回归旋转组合设计，在大田条件下建立了氮、磷、钾不同施肥量对水稻产量的生产函数；按边际分析原理探讨了氮、磷、钾肥对水稻产量的影响。结果表明：氮肥与磷肥之间和氮肥与钾肥之间均存在相互替换关系；得出了最高产量点、最高盈利点和在等产量线上的最低合计成本点的肥料配比，并进行了经济效益分析。
With the rotary society of the secondary regression of orthogonal block design,produictve function was made on the different amount of fertilizer N, P and K towards the rice yield in paddy field.According to the theory of marginal analysis, the impact factors of fertilizer N P and K on rice field were approached .The results indicated that there were mutuai replacement among N and P、 N and K;the maximum production point and the maximum benefit point were obtained; the least cost fertilizer coordinate rate on isoyield curve was obtained; economic results were also analysed.
出处
《延边大学农学学报》
1997年第2期74-80,共7页
Agricultural Science Journal of Yanbian University
关键词
水稻
回归设计
氮肥
磷肥
钾肥
施肥量
Rice yield, Regression design
Productive function, Marginal analysis
