论文部分内容阅读
盲椿象是安徽沿江棉区重要害虫之一,仅就芜湖地区而言,常年受害面积约占棉田总面积30%左右,受害棉株常造成破叶、疯长。幼蕾大量脱落,严重威协着早期花蕾的成铃。一、棉盲椿象的发生和危害:这个地区棉盲椿象大部在五月下旬至六月上旬迁入棉田,六月底、七月初为发生危害高峰,八月初,虫口才逐渐减少,危害显著减轻。盲椿象危害对幼蕾脱落的影响十分严重,我们在1959年七月在和县、凡昌两县21块棉田的调查(如图一),证明受害株率愈高,则幼蕾脱落亦愈严重,如受害株率为0.5%时,幼蕾脱落只有6.2%,
Blind stinkbug is one of the major pests in the cotton area along the Yangtze River in Anhui Province. For the area of Wuhu alone, perennial affected area accounts for about 30% of the total area of the cotton field. The affected cotton plants often cause broken leaves and long insanity. A large number of young buds fall off, severely threatened the early buds into the bell. I. Occurrence and Harm of Cotton Blind Stinkbug: Most of the cotton blight bugs in this area moved into the cotton fields from late May to early June, with the peak of danger occurring at the end of June and the beginning of July. In early August, the population of edible bugs gradually decreased and the harm was significantly reduced . The effects of blind stinkbugs on the emergence of young buds are very serious. In our survey of 21 cotton fields in He County and Fanchang counties in July 1959 (Figure 1), we found that the higher the damage rate, the younger the buds are shed Serious, such as victim strain rate of 0.5%, the young buds only 6.2% off,