摘要
采用数理统计方法，分析１９８０～１９９８年玉米螟发生的系统观测资料及有关的气象资料，可以看出，玉米螟在商洛地区是典型的当地虫源害虫，前期虫源的数量和发育进度，当时的气象等生态条件，是影响其发生为害的主导因子。由此建立起影响玉米螟发生期和发生为害程度的４个回归方程式。
By using mathematical statistics method, the systematically observed materials and relevant meteorological materials regarding the occurrence of Ostrinia furnacalis during 1980～1998 are analyzed. It shows the insect was the typically local insect. The insect quantity during earlier stage, proceeding of development, meteorological and other environmental conditions were major factors, which influenced its occurrence and losses. Therefore, 4 regression equations inflencing the occurrence period and degree of damage had been established
出处
《植保技术与推广》
1999年第4期3-4,共2页
Plant Protection Technology and Extension
