厚皮甜瓜栽培技术规范化研究

 用五元二次正交旋转回归数学模型，在华北厚皮甜瓜新产区，对影响果实含糖量、产量的五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、高产的厚皮甜瓜最佳生产方案服务。对方案分析结果，磷对提高含糖量有关键性的作用，亩施磷肥（过磷酸钙）应在75公斤以上；钾肥与含糖量呈正相关，华北栽培厚皮甜瓜应施钾肥；氮肥与含糖量呈直线负相关，施用量应控制。氮肥与磷肥和钾肥有密切的交互效应：当磷钾不足时，大大限制了氮肥的施用水平；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。

A STUDY ON THE STANDARDIZATION OF MUCKMELON CULTURE TECHNIQUE

In the new areas of muckmelon production in North China, 5main measures that affect the fruit sugar content and yield were analysed by the mathematical model of five unknown second order orthogonal rotative regression.3125 combinations and designs have been operated by electron computer, and the excellent plans which can obtain a high sugar content (>11%) were 2164. These plans can be selected for the musk melon culture to get the best effect such as low cost, high sugar conten and high yield under whatever conditions.The results indicate that phosphorus (P) plays an important role on the raise of sugar content and its amount applied should be more than 75kg per mu; The positive correlation was found between patassium(K) and with sugar content and it should be applied in North China; The negative linear correlation was found between nitrogen (N) and the sugar content and its amount applied should be controlled; N has a clear interrelation effect whith P and/or K, i. e. when P and/or K was lack the N amount applied was limited significantly; sufficient P and K are necessary to raise up the sugar content and yield, and can make full of use of N in the meanwhile.