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采用3因素二次回归通用旋转组合设计,研究了氮肥、磷肥、钾肥对加工型甜椒产量的影响,得到了相应的回归数学模型。结果表明:三因素影响加工型甜椒产量的顺序为氮肥>钾肥>磷肥。各因素间存在交互作用。经过计算机模拟,得到加工型甜椒产量达到最高值时,其相对应N、P、K肥用量分别为N600kg hm-2、P2O597kg hm-2、K2O273kghm-2。对试验结果进行的验证表明,模型选优所得氮肥、磷肥和钾肥配比的产量最高,施肥成本、施肥利润、肥料投资效率分别为0.34万元hm-2、0.65万元hm-2和1.91万元,栽培效果明显优于其它配比。证明构建的模型准确可靠。
The effects of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer on the yield of processed sweet pepper were studied by using the three-factor quadratic regression general rotation combination design. The corresponding regression mathematical model was obtained. The results showed that the three factors affecting the processing yield of sweet pepper were as follows: nitrogen fertilizer> potassium fertilizer> phosphate fertilizer. There is interaction between various factors. After the computer simulation, the yield of processed sweet pepper reached the highest value, the corresponding N, P and K fertilizer dosage were N600kg hm-2, P2O597kg hm-2, K2O273kghm-2. The results of the test showed that the optimal yield of nitrogen, phosphate and potassium fertilizers was the highest. The fertilization cost, fertilizer profit and fertilizer investment efficiency were respectively 0.34 million hm-2,065,500 hm-2 and 19,100 Yuan, the cultivation effect is obviously better than other proportions. Proved that the constructed model is accurate and reliable.