目前,西瓜生产是以地膜覆盖为主的早熟栽培为主要形式。由于其投资少、效益高,深受各地农民的欢迎,因此面积逐年扩大。但在生产上,往往由于栽培管理不当,使西瓜植株出现早衰现象,特别是新发展西瓜的农户更易出现,既影响西瓜的产量,又降低品质。在生产上必须加以解决。一、西瓜早衰的特征西瓜植株早衰主要发生在西瓜生长的中后期,特别是瓜长到碗口大小时表现最明显。其主要特征是:蔓细弱生长停滞,午后萎蔫;叶薄而黄;幼瓜生长缓慢或不再膨大,瓜皮松,色泽深暗。 At present, watermelon production is dominated by plastic film mulching cultivation as the main form. Because of its low investment, high efficiency, welcomed by farmers everywhere, so the area has expanded each year. However, in production, often due to improper cultivation and management, so that premature watermelon plants appear phenomenon, especially the new development of watermelon farmers more likely to not only affect the yield of watermelon, but also reduce the quality. In the production must be addressed. First, the characteristics of premature watermelon Watermelon premature aging occurs mainly in the late growth of watermelon, especially when the melon grows to the size of the most obvious performance. Its main features are: stagnant creeping growth stagnant, wilting afternoon; thin and yellow leaves; slow-growing or no bulimia cucumber, melon, dark color.