摘要
<正> 玉米是吉林省的主要作物之一,其产量占全省粮食总产量的60%以上,产值占全省农业总产值的1/3以上。吉林省中部地区13个县是玉米的主要产区,总耕地面积2.267×10~6ha,占全省的56%,1985年中部玉米面积1.0×10~6ha,占中部耕地面积的44%。
Climatic-ecological conditions for growing maize are compared for the central region ofJilin province with maize zones in America and Europe.The water-thermal conditions indevelopmental stages of maize and the climatic productive potentiality in central Jilin areanalysed in comparison with the western and eastern parts of the province.It is concludedthat the central part of Jilin province has the regional superiority for growing maize,whichshould be strengthened and developed.With optimization analysis of growing structures,the optimum ratio of maize is 40—60% of cultivated area,the weighted average value is48.48%.
出处
《生态学杂志》
CAS
CSCD
北大核心
1990年第2期40-45,共6页
Chinese Journal of Ecology
关键词
玉米
玉米带
气候生态适应
climatic-ecological condition
maize zone
suitability
central Jilin
