在南方多雨条件下,西瓜座果率的高低直接影响产量,而座瓜节位则影响果形的大小。对早熟西瓜品种而言,其主蔓座瓜率50～60％,适宜座瓜节位12～15节;中熟品种相应为40％与15～20节;晚熟品种为20％和20～25节。上述事实不能说明座瓜节位与座瓜率、果实大小及生长势之间的数量关系。因此,本文作者试图以“立体求积法”的数学模式,借助电 Rainy conditions in the south, the watermelon fruit rate directly affects the level of yield, while the seat of watermelon is the size of fruit shape. For the early maturing watermelon varieties, the main melon rate of 50 ~ 60%, suitable seat Melon node 12 to 15; medium maturity varieties corresponding to 40% and 15 to 20; late varieties 20% and 20 to 25 Festival. The above facts do not explain the relationship between the number of seeding nodes and the seeding rate, fruit size and growth potential. Therefore, the author of this article tries to use the mathematical model of “three-dimensional quadrature method”