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根据“3414”回归最优设计原理,设置水稻徐稻3号肥料肥效试验,获得肥料效应函数方程,由此方程得出理论氮、磷、钾最佳施肥量,其中,纯N18.5 kg/667 m2,P2O56.0 kg/667 m2,K2O 7.0 kg/667 m2。综合分析,建湖县境内蒜瓣土推荐施肥量,结合当地生产实际,氮、磷、钾建议施肥量分别为20.0 kg/667 m2,5.0 kg/667 m2,7.0 kg/667 m2,可获得目标产量650 kg/667 m2以上。
According to the optimal design principle of “3414”, the fertilizer efficiency experiment of rice “Xudao No.3” was set up to obtain the fertilizer effect function equation. The optimum amount of nitrogen, phosphorus and potassium was obtained from this equation. Among them, the pure N18.5 kg / 667 m2, P2O56.0 kg / 667 m2, K2O 7.0 kg / 667 m2. According to the comprehensive analysis, the recommended fertilization amount of garlic clove soil in Jianhu County, combined with the actual production in the country, the recommended fertilization amounts of nitrogen, phosphorus and potassium are 20.0 kg / 667 m2, 5.0 kg / 667 m2 and 7.0 kg / 667 m2 respectively, 650 kg / 667 m2 or more.