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1988年在浙江上于松厦进行的二次正交回归旋转组合设计试验的基础上,分析了氮磷钾和密度对僵黄花率的影响,
Based on the quadratic orthogonal regression rotation combination test conducted in Songxia in Zhejiang Province in 1988, the effects of N, P, K and density on the rate of frozen yellow flower were analyzed.