摘要
采用层次递减法对那湾小流域气候生产潜力进行了估算，结果显示：温度对早玉米、甘蔗产量的制约均较大；水分对晚稻产量的制约最大，其次是旱作；气候年际变化与灾害性气候因素是制约光温水生产潜力的首要限制因素。那湾小流域当前的作物产量水平与高产典型和气候生产潜力之间的差距表明，改善农业生产条件、提高作物栽培技术是挖掘气候生产潜力的主要途径。
According to hierarchic progressive decrease model,the writer assesses the climatic productive potentiality of small—shed in Nawan The results show that climate is the main limiting factor influencing the outturn of early—season corn and sugar cane;that the order of major plants whose yield influenced by precipitation is:late variety of rice,dry plant;that the primary limiting factors influencing the ligh—temperature—precipitation productive potentiality are the annual changes of local climate and calamity There exists big differences between the present yield of agricultural products in Nawan small shed,the typical high yield and the climatic productive potentiality It shows that the leading approaches to achieve the climatic productive potentiality are to improve the condition for agricultural production and plant culture technology
出处
《农业现代化研究》
CSCD
北大核心
1999年第5期311-313,共3页
Research of Agricultural Modernization
基金
世界银行第二期红壤开发广西项目资助课题
关键词
气候生产潜力
限制因子
南亚热带红壤区
小流域
climatic productive potentiatity
limiting factors
red soil area of south subtropics
small shed
