槐豆木虱空间分布及阿维菌素乳油的防治效果研究

Spatial Distribution and Abamectin Emulsifiable Control Effect of Cyammophila Willieti

于2021年对山西农业大学林学院林业站国槐林中的槐豆木虱种群数量进行调查,应用空间分布聚集度指标判定槐豆木虱在国槐树上的分布特征,并研究了不同浓度阿维菌素乳油对槐豆木虱的防治效果。结果表明,槐豆木虱在国槐林中的空间分布为聚集分布,在国槐的4个方位上亦表现为聚集分布。根据聚集均数指标判断,研究地槐豆木虱的聚集是由于其自身习性或自身习性与环境因素综合所致,而在不同方位上的聚集是由环境因素所致。阿维菌素乳油对槐豆木虱具有较好的防治效果,其中,2000倍液的防治效果显著高于3000倍液,1000倍液的防治效果与2000倍液无显著差异,两者的虫口减退率均达到96%以上。

In 2021,a survey was conducted on the population of Cyammophila willieti in the Styphnolobium japonicum forest at the Forestry Station of Shanxi Agricultural University Forestry College.The spatial distribution aggregation index was used to determine the distribution characteristics of Cyammophila willieti on Styphnolobium japonicum,and the control effect of different concentrations of avermectin emulsion on Cyammophila willieti was studied.The results showed that the spatial distribution of Cyammophila willieti in the Styphnolobium japonicum forest was clustered,and it also exhibited clustered distribution in 4 directions of Styphnolobium japonicum.According to the average aggregation index,the aggregation of Cyammophila willieti in the study area was due to its own habits or a combination of its own habits and environmental factors,while the aggregation in different directions was caused by environmental factors.Abamectin emulsifiable had a good control effect on locust bean psyllid.The control effect of 2000 fold solution was significantly higher than that of 3000 fold solution,and there was no significant difference in the control effect between 1000 fold solution and 2000 fold solution.The population reduction rate of both can reach over 96%.