论文部分内容阅读
1980～1981年辽宁省大部分市、县的果树遭受到历史上罕见的冻害,大量的果树冻伤或冻死,给果树生产造成严重损失。为找出冻害的原因、特点、程度及其范围,为予防冻害,调整果树布局,合理区划,发展生产等提供依据,我们于1981年5～7月对全省主要果树,进行了冻害调查,现报告如下:一、调查方法采取分组选点调查,组成三个调查小组分赴宽甸、丹东、岫岩、庄河、盖县、营口、海城、鞍山、辽阳、灯塔、北镇、北票、建平、朝阳、西丰、开原、铁岭、法库等18个市县
In 1980-1981, the fruit trees of most cities and counties in Liaoning province suffered rare freezing frost damage in history. A large number of fruit trees were frostbite or frozen to death, which caused serious losses to fruit trees. In order to find out the causes, characteristics, extent and scope of frost damage and provide basis for frost damage prevention, adjustment of fruit tree layout, rational division and development of production, we conducted a frost damage investigation on the main fruit trees in the province from May to July in 1981, The report is as follows: I. Methodology The investigation team conducted a survey on the selected points to form three investigation teams to go to Kuandian, Dandong, Xiuyan, Zhuanghe, Gaixian, Yingkou, Haicheng, Anshan, Liaoyang, lighthouse, North Town and North Votes, Jianping, Chaoyang, Xifeng, Kaiyuan, Tieling, law library and other 18 cities and counties