摘要
应用系统工程理论,对“两旱一水”大麦和玉米间套作农艺的主要技术因子进行了研究,明确了玉米品种、间套作方式、密度、氮化肥用量与产量的关系,为此获得了95％保证率下大麦和玉米组合每公顷产量高于9750kg的优化农艺方案一套:玉米品种掖单-13、间套作方式玉米=大麦=玉米、密度80.1～82.7千株/ha、纯氮量231.0～253.5kg/ha。为大麦和玉米间套作高产稳产栽培措施决策提供了科学依据,对上海等长江下游地区发展“两旱一水”三熟制有一定参考意义。
In the present study, the main technical factors of the agronomic practices on relay-intercropping of barley and corn were studied, it was found by the method of system engineering, the relationships was indicated among corn variety, relay-intercropping form, corn density, nitrogen fertilizer and combinatorial yield. And also, the optimum scheme of agronomic practices was obatined through microcomputer simulating and optimization to achieve a set of combinatorial yield of more than 9 750 kg/ha with 95％' s reliability in the same test condition, with YeDan-13(corn' s variety) , Corn = Barley = Corn (relay-intercropping form) , 80 130～82 730 plant/ha (corn'density), 231.2 to 253. 5 kg/ha (pure nitrogen fertilizer).
At the same time, the results were also demonstrated in Shanghai suburbs, and provided the of scientific theoretical basis for steady high yield of relay-intercropping of barley and corn. Those results were useful to develop the triple-cropping system for double dry cropping with one water cropping in middle east Yangtze River valley.
出处
《上海农业学报》
CSCD
1992年第4期34-37,共4页
Acta Agriculturae Shanghai
关键词
水旱轮作
数学模型
大麦
玉米
Paddy-upland rotation, Double dry cropping with one water cropping, Relay-intercropping, Agronomic practices, Combinatorial yield, Mathematical model
