摘要
Abstract
Forecast data of brown planthopper in Gaochun District were analyzed, and results showed that since 2005, the outbreak frequency of brown planthopper has increased, causing serious harm and loss; its immigration trend changed from the high to the low, showing a wavy situation;the short winged adults emerged early, with high proportion, and the worm rose fast at the heading stage;the high amount of eggs occurred in the seventh (4) generation, the young nymph with long booming period;big differences happened between different region and plots. We found its causes were related to suitable climate, favorable host species, enhanced resistance, different prevention and controlling levels, and other factors. On this basis, we proposed to strengthen the insect monitoring, focus on pretreatment control, select the right pesticides, and conduct other prevention and control measures.关键词
褐飞虱/灾变规律/防控对策Key words
brown planthopper (BPH)/disaster regularities/prevention and control measures分类
农业科技
