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保亭黎族苗族自治县开展了水稻测土配方施肥3414试验。对试验结果进行了三元二次回归分析,建立水稻目标产量与氮磷钾之间的函数关系,经过计算机模拟,肥料对水稻产量的影响是氮肥>磷肥>钾肥。每667m2施用氮、磷、钾养分分别为11.75、8.25和7.77kg时水稻产量最佳为412.34kg,结合海南保亭土壤状况和水稻生产的实际,建议水稻生产中每667m2施用氮、磷、钾养分分别为10~13、7~9和6~8kg,此时氮、磷、钾养分配比以1:0.7~0.9:0.6~0.8较合适。
Baoting Li Miao Autonomous County to carry out rice soil testing 3414 formula fertilization. Three-way quadratic regression analysis was conducted on the test results to establish the functional relationship between the target yield of rice and NPK. After computer simulation, the effect of fertilizer on rice yield was nitrogen fertilizer> phosphate fertilizer> potassium fertilizer. The optimal yield of rice was 412.34kg per 667m2 for applying nitrogen, phosphorus and potassium nutrients of 11.75, 8.25 and 7.77kg, respectively. According to the actual situation of paddy soil in Hainan Province and the actual rice production, it was suggested that N, P, K Nutrients were 10 ~ 13,7 ~ 9 and 6 ~ 8kg, at this time nitrogen, phosphorus and potassium nutrient ratio of 1: 0.7 ~ 0.9: 0.6 ~ 0.8 more appropriate.