摘要
湖南素以“鱼米之乡”著称。全省拥有耕地面积3.47×10~6ha,1986年水稻播种面积4.33×10~6ha,总产2.6316×10^(10)kg。水稻各个生育时期都有病虫发生。现就影响病虫种群结构的几项主要生态因素分述如下。
The main farmland ecological factors affecting population constitution of rice diseases and pests in Hunan province include the reform of cropping systems,the improvement of cultural practices and the renewal of rice varieties.Among which, the first is the main factor, the second is an important condition,and the last is the material base.From now on integrated management should be strengthened to improve the farmland ecological conditions and reduce the discase and pest damages.
出处
《生态学杂志》
CAS
CSCD
北大核心
1989年第2期38-40,45,共4页
Chinese Journal of Ecology
关键词
农田生态
水稻
病虫害
rice, diseases, pest, farmland, ecological factor.
