摘要
对嘉陵江流域阆中、南部和西充县的作物生产动态进行了分析．上述三县的主要作物相同，均为水稻、小麦、红苕、玉米、棉花和油菜，但各县有自己的特有作物类型．从1949年到1985年间，6种作物的播种面积发生了明显变化．其中玉米播种面积自70年代中期以来增加最大．1949年前普遍种植地方品种，其后，主要作物推广品种替换了几次．对作物品种替换的原因做了分析，并对未来作物生产的策略做了讨论．
The crop production trends in Langzhong , Nanbu and Xichong counties, in the Jialing River basinwere analysised. The three counties had the same 6 main crops, i.e. rice, wheat, sweetpotato, maize, cotton and rape,and each county had its own peculiar crop. Notable changes had taken place in sowing area of the 6 main crops from 1949to 1985. Among them, maize had increased most obviously in sowing area since the midle 70s. Land races were generallycultived before 1949. After that, spreaded races of the main crops were replaced several times. The causes of the replacement were analysised. The next tactics of crop production was discussed.
出处
《四川师范学院学报（自然科学版）》
1999年第2期124-129,共6页
Journal of Sichuan Teachers College(Natural Science)
关键词
嘉陵江
作物生产
农业
品种
南充市
Jialing River, crop production, agriculture,races.
