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1.合理密值确保通风透光良好。西瓜种植密度667平方米早熟品种800～1000株;中晚熟品种500～800株;嫁接苗200～500株。间作套种要加大行距,保护地栽培不能过密,以不互相遮光,有利通风为原则。 2.协调营养生长与生殖生长关系。茎叶生长过旺或生长过弱都导致落花化瓜。所以,不要偏施氮肥,开花结果期应控制肥水,以免瓜秧旺长。如果出现疯秧现象,应及时采用重压蔓、扭伤茎蔓顶端、扭破坐果节位前的茎蔓等方法抑制茎叶生长。若植株生长较弱,子房瘦小,可进行根部追肥,增加植株长势,促进开花坐果。
A reasonable density to ensure good ventilation and light. Watermelon planting density of 667 square meters of early-maturing varieties 800 to 1000; late-maturing varieties 500 to 800; grafted 200 to 500. Intercropping intercropping to increase the line spacing, the protective cultivation can not be too close, not to each other shade, the principle of favorable ventilation. 2. To coordinate the relationship between vegetative and reproductive growth. Stems and leaves over-growth or over-growth have led to fall melon. Therefore, do not partial nitrogen fertilizer, flowering period should control the fertilizer, so as to avoid the proliferation of melon seedlings. If there is crazy phenomenon of seedlings, should promptly adopt the weight of vine, sprained the top of the stems and crannies, wriggling stems and leaves and other methods before the stems and leaves inhibit the growth of stems and leaves. If the plant growth is weak, ovary thin, root top dressing can be done to increase plant growth and promote flowering and fruit setting.