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研究结合辽宁省测土配方施肥工作,于2006年、2007年在盘锦地区布置多点“3414”水稻肥料试验。对产量数据的回归分析,分别建立了各点产量数据与施肥量的三元二次和一元二次效应模型,再采用边际分析法求得最佳施肥量。对两种模型施肥量推荐效果进行比较,可知三元二次函数推荐值偏离实际,应用时必须以一元二次方程为补充,并结合当地生产实际和土测值。最后,综合提出了盘锦地区水稻生产的最佳施肥量:氮肥(N)270～315kghm-2,磷肥(P2O5)75～120kghm-2,钾肥(K2O)0～75kghm-2,此时,可获产量为8250～9750kghm-2。研究认为,在区域施肥效应模型的综合建立中,产量平均值回归法优于回归系数平均法。对于区域性肥料效应模型的拟合方法还有待于进一步研究。
The study combined with soil testing and fertilization work in Liaoning Province, in 2006, 2007 in Panjin region more “3414” rice fertilizer experiment. For the regression analysis of yield data, the quadratic quadratic and quadratic quadratic effects models of yield data and fertilization at each point were established, and then the marginal analysis method was used to find the optimal fertilization rate. Comparing the recommended results of the two models, we can see that the recommended value of the quadratic quadratic function deviates from the actual one. The application must be supplemented by the quadratic equation of one yuan, combining with the actual production in the local area and the soil measured value. Finally, the optimal fertilization rate of rice production in Panjin is proposed: 270 ~ 315kghm-2 nitrogen fertilizer (N), 75 ~ 120kghm-2 P2O5 and 0 ~ 75kghm-2 potassium fertilizer The yield is 8250 ~ 9750kghm-2. According to the research, in the comprehensive establishment of the regional fertilization effect model, the average yield regression method is superior to the average regression coefficient method. Fitting method of regional fertilizer effect model needs to be further studied.