摘要
利用我省优越的光热水条件,扩大复种指数,是提高粮食产量的重要途径。多年来,我省水田普遍是以“冬作双季稻”为主的“两水一旱”一年三熟制,粮食产量虽然比较高,但是生产成木高,投资效益低;同时有的地区长期为“两水一早”耕作制,降低了土壤肥力,已成为生产进一步发展的障碍。为此,我们进行了不同复种方式下农田生态系统的养分平衡、经济效益及其土壤肥力的研究,以探讨如何建立稳定高产的农田生态系统。
Researehes had been carried out during 1988—1989 in Shaoxing and Qu eounties of Zhejiang pravince for the nutrient balance, economic benefits and soil fertility of farmland ecosystem under 5 different kinds of multi-cropping systems. As the result indicates, the grain praduction and crude protein content under the wheat-rice-soybean system are highcr.This system is also characterized by better investment profits, improvement of soil aeration and nutrient release, whlch has broad pro(?)pects for development.
出处
《生态学杂志》
CAS
CSCD
北大核心
1991年第3期1-4,共4页
Chinese Journal of Ecology
关键词
复种制
农田生态功能
土壤肥力
multi-cropping, farmland ecological function, soil fertility.
