西瓜(citrullus.ianatus)属葫芦科,一年生草本植物。随着市场经济的繁荣和人民生活的提高,西瓜作为盛夏消暑佳果,越来越受到城乡人民的青睐。市场需求的增长,农民收益也同步增加,一般一亩西瓜净收入可达四、五百元,高的上千元。我县地处长江三角洲,夏季雨量偏多,加之老瓜区轮作换茬上的困难,往往暴发枯萎病、炭疽病导致西瓜的减产,甚至失收。由此,年度之间对西瓜种子的需求起落很大,种子供应部门瓜种余缺问题常常出现,为了搞好服务、搞好经营,妥善保管好瓜种,已成为种子经营部门迫切研究的课题。下面将近两年的低温保贮瓜种情况研究如下: Watermelon (citrullus.ianatus) is a Cucurbitaceae, an annual herb. With the prosperity of the market economy and the improvement of people’s lives, watermelon, as a good summer refreshing fruit, is more and more favored by urban and rural people. Market demand growth, peasants income also increased simultaneously, the general income of an acre of watermelon net income up to four, five hundred yuan, a thousand dollars high. My county is located in the Yangtze River Delta, the summer rainfall is too much, in addition to the cucumber zone rotation cropping difficulties, often outbreak of blight, anthrax lead to watermelon production cuts, or even lost. As a result, the demand for seeds of watermelon varies greatly between the years. The problems of remaining seeds and missing seeds in the seed supply department often appear. In order to do a good job in service, do a good job of management and keep the melons well, it has become an urgent task for the seed management department to study. The following two years of low-temperature preservation melon species are as follows: