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目的调查鲁西南稻田区媒介蚊虫种类和蚊幼虫孳生情况,为稻田蚊虫的防治提供依据。方法利用勺捕法调查蚊幼虫密度,成蚊调查采用人帐诱蚊法、CO_2诱蚊灯诱捕法以及帐扣法。结果鲁西南稻田区共捕获蚊虫6属11种,其中幼虫9种,成蚊11种,优势蚊种为三带喙库蚊、淡色库蚊和中华按蚊,分别占捕获成蚊总数的45.79%、29.32%和22.74%。在整个水稻生长季节,稻田均有幼虫孳生,稻田库蚊和按蚊幼虫密度分别在7月中下旬和8月中下旬出现两个高峰,库蚊高峰期幼虫密度最高为1.88条内,最低密度为0.08条/勺;按蚊高峰期幼虫密度最高达2.82条/勺,最低密度为0.09条/勺。结论稻田区蚊虫孳生地种类多样化,蚊虫种类丰富,应以成蚊防治为主,稻田幼虫可采用田间间歇灌溉的方法控制密度。
Objective To investigate the species of mosquitoes and mosquito larvae breeding in paddy fields in the southwest of Shandong Province and provide basis for prevention and control of mosquitoes in paddy fields. Methods The density of mosquito larvae was scoped by spoon scoop method. The mosquito larvae were trapped in the mosquitoes by using the trap method, the trapping method with CO_2 trap and the method of account deduction. Results A total of 11 species of 6 genera and 6 species of mosquitoes were captured in paddy fields in southwestern Shandong Province, including 9 larvae and 11 adult mosquitoes. The dominant mosquito species were Culex tritaeniorhynchus, Culex pipiens pallets and Anopheles sinensis, accounting for 45.79% , 29.32% and 22.74% respectively. During the entire rice growing season, all the larvae breed in paddy fields. The larvae density of Culex pipiens pallens and Anopheles sinensis showed two peaks in the middle and late July and late August respectively. The highest larval density at the peak of Culex pipiens pallens was 1.88, the lowest density Was 0.08 / spoon. The peak larval density of Anopheles mosquitoes reached 2.82 / spoon, the lowest density was 0.09 / spoon. Conclusion The species diversity of mosquito breeding areas and the species of mosquitoes in paddy fields are dominant. The control of mosquitoes should be dominated by the control of adult mosquitoes. The rice larvae can be density controlled by intermittent field irrigation.