摘要
试验采用二次回归通用旋转组合设计方法,对玉米茬后季稻主要技术因子进行了研究。明确了寒优1027的播期、基本苗数、氮肥用量与产量的关系,并获得95％保证率下产量高于7500kg/ha的优化方案。同时经过市郊两年百亩方的验证,达到了预期目标。在详细分析寒优1027品种若干生育指标的基础上,提出了高产栽培措施和诊断指标,对促进市郊粮食生产具有一定参考意义。
The main technical factors of the agronomic practices for cropping late rice following corn were studied with the commonly used method of rotation and combinatorial design quadratic regression. The relationships were indicated among sowing date, basic seedlings, nitrogen fertilizer and yield for variety Hanyou 1027. The optimum scheme of agronomic practices was obtained through microcomputer simulating and optimization to achieve a yield of more than 7 500 kg/ha with 95％’s reliability in the same test condition. The scheme was tested in the fields covering 66.7ha area for two years. The several growth and development targets of rice population were analysed in detail, and the diagnostic target for high yield of the variety Hanyou 1027 was proposed, too. The results provided the scientific theoretical basis for determining high-yield agronomic practices in Shanghai suburbs.
出处
《上海农业学报》
CSCD
1993年第3期35-41,共7页
Acta Agriculturae Shanghai
关键词
两旱一水
轮作
水稻
栽培
玉米茬
Double dry cropping with one water cropping
Agronomic scheme
Optimization
Diagnostic target
