近期,笔者在湖北省天门市黄潭镇、武汉市东西湖区辛安渡农场等地下乡服务时,看到公路两旁摆满了不同类型的甜瓜,正在等待过往行人及车辆中的旅客停车购买,生意很是红火。笔者在买瓜的同时,顺便到种植甜瓜的大田看了一下,发现这些地方的甜瓜不同农户间是分期播种的,大部分甜瓜长势不错,但也有些农户的甜瓜出现了病害。据笔者现场调查,主要是凋枯病和叶枯病。凋枯病一般发生在果实采收前,开始时中午叶片凋萎,次日叶片又正常展开,进而由凋萎至枯死,这是一种生理性病害。发病原因,一是采用塑料钵体育苗,幼根少,老根多,新根发育不良; Recently, when I was serving in the townships such as Huangtan Town in Tianmen City of Hubei Province and Xin’andu Farm in Dongxihu District of Wuhan City, I saw different types of melons on both sides of the road and were waiting for the travelers to park in the past to purchase pedestrians and vehicles, Business is booming. At the same time of buying the melon, I looked at the fields where the melons were grown and found that the melons in these areas were sown in stages by different farmers. Most melon grew well, but some peasant melons showed disease. According to the author’s field investigation, mainly blight and leaf blight. Blight generally occurs before fruit harvest, at the beginning of leaves at noon wilt, the next day the normal development of leaves, and then withered to dead, which is a physiological disease. The causes of the disease, one is the use of plastic pots sports seedlings, young roots less, more roots, new roots dysplasia;