兴安县地势较高,气候较冷,年平均气温17℃,最低温度零下5℃左右。自春分至清明这半个月,阴雨多、日照少、气温低、风势大,每年都有一两次冰雹,因此历年早稻育秧的这一关键时刻,几乎全都处于寒潮威胁之下。由于气候条件的影响,过去只习惯种植中稻,根本不敢设想种植双季稻。解放后,1952年开始试种双季稻,面积由小到大,产量由低到高,经过十多年的摸索,栽培经验也逐步丰富起来。去年早稻扩大到五万多亩,晚稻一万二千亩,并出现一 Xing’an County has a higher terrain and a colder climate with an annual average temperature of 17 ℃ and a minimum temperature of about 5 ℃. Since the early spring to the Qingming this half a month, more rainy, less sunshine, low temperature, wind, hail every 12 or so, so the key moment of early rice cultivation in the calendar year, almost all in the threat of cold wave. Due to the climatic conditions, it used to be only used to growing middle rice. After the liberation, double crop rice was planted in 1952, ranging in size from low to high. After more than a decade of exploration, cultivation experience has gradually been enriched. Last year, early rice expanded to more than 50,000 mu and late rice amounted to 12,000 mu