论文部分内容阅读
为探明双斑长跗萤叶甲在黑龙江省的发生动态,2012年和2013年采用田间网捕和定点方法调查了黑龙江省哈尔滨、佳木斯和牡丹江3个地区双斑长跗萤叶甲成虫田间发生情况。结果表明:2012年和2013年3个地区双斑长跗萤叶甲发生趋势一致,表现为6月底、7月初成虫开始为害,8月中下旬种群数量达到高峰期,危害株率达80%~100%,百株虫量达625头,9月中上旬开始消退。其中哈尔滨地区发生最为严重,但扩散现象并不明显,高粱田危害相对较重。
In order to find out the occurrence of Monochoria longicoros in Heilongjiang Province, field investigation and site-specific methods were used in 2012 and 2013 to investigate the spatial distribution of Diabrotica diffusa in three areas of Harbin, Jiamusi and Mudanjiang in Heilongjiang Province What happened? The results showed that in 2012 and 2013, the trend of development of Diabrotica equator was consistent, which showed that the adults started to damange in late June and early July, the population reached the peak in late August, the rate of strain was 80% 100%, the amount of one hundred insects amounted to 625 head, mid-September began to subside. Among them, the most serious occurred in Harbin, but the phenomenon of proliferation was not obvious. The damage to the field of sorghum was relatively heavy.