摘要
通过对7个主要玉米主产区种子总产、生产面积及其相关因素的调查和灰色分析发现,影响玉米种子总产和面积的因素次序是:上一年种粮比价>上一年玉米种子价格>上一年玉米粮食价格。通过简单相关分析表明,吉林、辽宁两省玉米种子生产受自然降雨量影响较大。而且通过灰色关联分析在解决变化规律较差的非直线关系问题时,表现出更多的优越性。
Factors of effecting corn seed production in 7 main provinces were investigated and analyzed with grey relational analysis. The orders of factors of effecting corn seed production total yield and total area were found that the rate of price of seed to grain last year was more important than seed price last year, the later more important than grain price last year. The total yield and total area in provinces of Jilin and Liaoning were affected significantly by rainfall before the 8th month. Grey relational analysis was more useful than simple relational analysis while analyzing irregular random variables.
出处
《玉米科学》
CAS
CSCD
北大核心
2006年第B07期150-152,共3页
Journal of Maize Sciences
关键词
玉米
种子生产
灰色分析
Maize
Seed production
Grey relational analysis
