摘要
采用灰色关联优势分析方法对辽宁省喀左县二代棉铃虫发生程度与气候因子间关系进行了分析,得出:6月下旬干燥度、7月上旬平均气温、6月中旬平均气温为影响发生程度的主要因子,7月中旬干燥度对二代棉铃虫发生程度的关联度最小。因此,夏季干旱少雨和气温偏高是棉铃虫大发生的重要条件。
The relationship between the second generation Helicoverpa armigera (Hǖbner) occurrence degrees and the climate factors was analyzed in Kazuo county, Liaoning Province, The results showed that the drought degree of the last-ten days in June, the average air temperature of the flint-ten days in July and the average air temperature of the second-ten days in June were the main factors which affected the occurrence degrees of the second generation Helicoverpa armigera. And that the factor relatively poor correlated to it was the drought of the second-ten days in July. So the drought and higher air temperature in summer was the important conditions of the Heliothis armigera great occurrence.
出处
《中国农业气象》
CSCD
2005年第3期187-190,共4页
Chinese Journal of Agrometeorology
基金
辽宁省科技厅项目"辽宁省农业气象灾害分析诊断预测与防御对策"
关键词
棉铃虫
气候条件
灰色系统
优势分析
Heliothis armigera
Climate factors
Gray system
Advantage analysis