保护益鸟防治森林害虫作为生物防治的措施之一,具有成本低,不杀伤天敌、不污染环境的优点。这里仅介绍几种最主要的常用的方法。一、保护鸟类的巢、卵和幼雏。在鸟类繁殖期中,不要在鸟类营巢地放牧、砍伐树木,并要驱除小鸟的天敌,如雀鹰、鹞等。对于鸟巢和卵,既不应破坏,也不要任意移 As one of the measures for biological control, the protection of the beneficial birds against forest pests has the advantages of low cost, no killing of natural enemies and no environmental pollution. Here are just a few of the most common and commonly used methods. First, to protect the birds nest, eggs and chicks. During the breeding season of birds, do not graze in the nesting of birds, cut down trees, and get rid of the natural enemies of birds, such as the sparrowhawk, eagle and so on. For the nest and eggs, neither destroy nor move freely