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目的探讨水稻灌溉对嗜人按蚊种群密度与消长的影响。方法于 1 986 -2 0 0 0年夜间 2人帐内诱捕吸蚊计算种群密度 ,清晨搜捕全村人房按蚊 ,观察嗜人按蚊种群变化和自然消长。结果观察点将乐县上山洞水稻种植期实行自流串灌 ,农闲期泡田积水 ,嗜人按蚊密度高 ,平均叮人率为 1 6 .9只 /人·夜 ,活动期长 ,分别于 6～ 7月和 9月出现 2次密度高峰 ;邵武市下洪元村水稻生长期实行轮灌制 ,冬季排水烤田 ,观察期间嗜人按蚊种群密度一直较低 ,活动期较短 ,于 6～ 7月出现 1次密度高峰 ,平均叮人率为 0 .8只 /人·夜 ,前者是后者的 2 1倍。结论水稻田终年泡田积水有利于嗜人按蚊种群繁殖 ,实行轮灌和烤田可明显影响嗜人按蚊种群密度与消长
Objective To investigate the effects of rice irrigation on population density and decline of Anopheles anthropophagus. Methods The population density of mosquitoes was traced in two people from 1986 to 2000, and anopheline mosquito was sown early in the morning to observe the population change and natural decline of Anopheles anthropophagus. Results Observation Point The rice planting period of Shangshang Cave in Shuolexian County was carried out by gravity flow irrigation. The density of buoyant field and anopheles anopheles population during the slack season was high, with an average rate of 16.9 persons / person / night and a long activity period of 6 July ~ September and September. The population density of Anopheles anthropophagus in Xia Hongyuan village during Shaogu’s rice growing period was in winter, In July, there was a density peak with an average bite rate of 0.8 people / person / night, the former being 21 times of the latter. Conclusions The paddy field water accumulation in paddy field is beneficial to the reproduction of Anopheles anthropophagus in the paddy fields. The rotation and burying can obviously affect the population density and growth of Anopheles anthropophagus