洞庭湖区东方田鼠的发生与防治措施探讨

对1982～2005年洞庭湖区东方田鼠的发生与危害进行了系统调查，结果表明：东方田鼠的发生量与冬季降水量密切相关；其越冬基数的大小与上年洞庭湖洪水水位呈负相关，洪水水位高且维持时间长，洲滩裸露时间短，不利于东方田鼠的发生；当洪水淹没洲滩后，东方田鼠被迫向垸内转移，其转移时期取决于洞庭湖水位上涨的迟早；转移数量受发生量的大小和高峰水位维持时间长短的影响。在防治上以设置防鼠墙，切断转入通道为主要防治措施，对转移迁入垸内的东方田鼠实施农业防治、人工捕杀与化学毒饵诱杀相结合的防治方法，全面控制东方田鼠的为害。

Occurrence and Control of Microtus Fortis in Dongting Lake Area

The amount of Microtus fortis was postively related with the rainfall in winter, The flood waterline in the past year had negative relationship with the basic population of the microtus fortis in winter, A high waterline and a long lasting flood would lessen the occurrence of Microtus fortis. If the flood drowned the bank,the mice would transfer to the inner plain behind the bank, The transferring time was decided by the time when the flood happened in Dongting Lake. The amount of the transferred microtus fortis was affected by the amount of occurrence and the time that the peak water level of the flood lasted, To control the Microtus fortis , the anti-mice wall was a good way by cutting the transfering passage, Agricultural control, artificial hunting and chemical poisonous baiter were to be cooperative to control those Microtus fortis having enterred the inner plain,