珠江三角洲鼠类天敌的研究

珠江三角洲的鼠类天和主要有20余种兽类、鸟类和蛇类．根据食性分析．它们中的大多数是兼食鼠类，一些昼出性的天敌与鼠类活动的习性不一致．捕鼠的机遇不多．随着经济开发．鼠类天敌的栖息地日渐缩小．种群数量下降，从而使其控制鼠害的作用受到削弱．一些猛禽被滥捕滥杀．更使这些天敌种类面临绝境．

Study on the Natural Enemies of Rats in Pearl River Delta

In the Pearl river deltu, the main natural enemies of rat are over twenty kinds ofbeasts, birds and snakes. According to the analyses of feeding habits, they feed on rat and other foods simultaneously. Some of them act in day time. Their habits and characteristics show difference to rat and they have few opportunities to tatch rat. With the opening in economy, the areas which the natural enemies of murid live in are beComing narrowly. The quantihes in their population are reducing so that their actions to control rat are weakened.At the same time, the birds of prey are killed by people. It makes them to face the impasse.To control murid and keep the ecological balance, we should protect all natural enemies of rat.