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为了有效减少洞庭湖区东方田鼠对农业生产造成的损失,采用样点调查的方法对东方田鼠灾害进行了调查。自2003年开始,在洞庭湖区设置8个典型调查点,对每个调查点连续调查至少3年,每个季节至少调查1次。结果表明:不同地点东方田鼠的暴发风险等级存在差异,东洞庭湖是暴发风险等级较高的地区;东方田鼠种群的年内波动为单峰,且峰值出现在夏季;东洞庭湖西岸洲滩为东方田鼠的主要迁出地,东洞庭湖东岸则主要是由于迁入的东方田鼠而导致鼠害发生。通过分析不同地点东方田鼠成灾的规律,建立相应的预警模型,能够实现东方田鼠的综合管理。
In order to effectively reduce the losses caused by agricultural voles in the field voles in Dongting Lake, the investigation of oriental voles was conducted by sampling survey. Since 2003, eight typical survey sites have been set up in the Dongting Lake area, with at least 3 years of continuous investigation for each survey site and at least 1 survey for each season. The results showed that there were differences in the risk levels of voles in the eastern vole between different locations, East Dongting Lake was a region with a high risk of outbreak. The population fluctuated as a single peak in summer and the peak appeared in the summer. The main field of voles to move out, East Dongting Lake East coast is mainly due to the immigration of the eastern vole caused by rodent occurrence. Through analyzing the law of the disaster of Microtus fortis in different places and establishing the corresponding early-warning model, it can realize the comprehensive management of Microtus fortis.