我县地处赣中,位于东径114°44′——115°24′1″,北纬27°35′21″～28°5′51″,属亚热带湿润气候。四月下旬,常因冷空气扩散南下,造成阴雨多,日照少,温度低的不良气候,是棉花一播全苗的主要障碍。在八十年代的四年中,不利的年份就有三年。1980年棉花保住四月苗仅有六万余亩,占总播种面积的50％;1982年棉花保苗较好,但 My county is located in Jiangxi, located in the east path of 114 ° 44 ’- 115 ° 24’1 “, latitude 27 ° 35’21” ~ 28 ° 5’51 ", is a subtropical humid climate .In late April, often due to cold The spread of air south, resulting in more rainy, less sunshine, low temperature and poor weather, is a major obstacle to the whole plantation of cotton .In the four years of the eighties, the unfavorable year there are three years .2008 cotton keep the April seedlings Only sixty acres, accounting for 50% of the total sown area; cotton seedlings in 1982 better, but