论文部分内容阅读
玉米高产研究和生产实践表明,辽宁省中熟、中晚熟品种较晚熟品种更具优势且有增产趋势。中熟玉米品种遇到春季干旱可以推迟播种,遇到秋吊可以提早成熟,可以充分利用有限的光热资源,使籽粒达到充分的生理成熟,提高产量和容重,使粮食的商品品质优良,减少水玉米的再次出现,对辽宁省的自然条件是合适的。本文通过对辽宁省审定的普通玉米品种的主要性状进行灰色关联分析,揭示其变化趋势,明确影响中熟玉米品种产量的主要因
The research and production practice of high yield of corn showed that middle and late maturing varieties of Liaoning Province had more advantages and increased yield than the late maturing varieties. Medium maturing maize varieties can delay sowing in the spring when they encounter drought, and they can mature early when they encounter autumn hanging. They can make full use of limited light and heat resources to achieve full physiological maturity of grain, increase yield and bulk density, make the quality of grain good and reduce The reappearance of water corn is suitable for the natural conditions of Liaoning Province. In this paper, gray correlation analysis of the main characters of common maize varieties examined and approved in Liaoning Province reveals the trend of changes and the main factors affecting the yield of maize varieties