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用五元二次正交旋转回归数学模型,在华北蜜瓜新产区对影响果实含糖量、产量的5项主要栽培措施进行了试验。经电子计算机运算,完成了3125个组合设计方案,其中含糖量>11％的优化方案2164个。可为在各种条件下选择低耗、高糖、高产的蜜瓜生产最佳方案服务。对方案分析结果,磷对提高含糖量有关键性作用,亩施磷肥应在75kg以上;钾与含糖量正相关,华北栽培蜜瓜应施钾;氮与含糖量星直线负相关,施用量应该控制。氮与磷和钾有密切的交互效应:当磷、钾不足时,大大限制了氮的施用水平;磷、钾充足是提高含糖量、产量的关键,而且可以充分发挥氮肥的效益。
Five quadratic orthogonal rotation regression mathematical models were used to test five main cultivation measures affecting sugar content and yield of fresh honeydew melon in North China. After computerized computing, 3125 composite designs were completed, of which 2164 were optimized with> 11% sugar content. For a variety of conditions in the choice of low-power, high-sugar, high-yield melon production best solution services. The program analysis results, phosphorus to improve the sugar content of the key role, Mushi phosphate fertilizer should be more than 75kg; potassium and sugar content is positively related to the cultivation of melon in North China should be applied potassium; nitrogen and sugar content of the negative linear correlation, The amount of application should be controlled. Nitrogen and phosphorus and potassium have a close interaction effect: when phosphorus and potassium are not enough, the application level of nitrogen is greatly limited; phosphorus and potassium are the key to increase sugar content and yield, and can fully utilize the benefit of nitrogenous fertilizer.