保护地种植甜瓜存在的主要问题是座果率低、果实小、产量低。造成这种现象的主要原因是:甜瓜的花不单是单性花也可以是两性花,而结实的只是两性花。由于两性花的柱头高于雄蕊花,所以一般不利于授粉。加之保护地温度大,空气流动小,授粉更 Protected cultivation of melon there is the main problem of low fruit rate, small fruit, low yield. The main reason for this phenomenon is: melon flower is not only unisexual flowers can also be bisexual, but strong bisexual flowers. Because the stigma of a bisexual flower is higher than the stamen flower, it is generally not conducive to pollination. Coupled with the protection of temperature, air flow is small, more pollination