灰喜鹊防治松毛虫获得成功徐振军密云水库环境优雅，库水清澈。在水库下游和环湖路两侧的山场上生长着茂密的油松，不仅美化了环境，而且防风固沙，保持水土，为保护首都的这盆净水发挥了巨大作用。１９７８年，水库周围万余亩油松林开始遭到松毛虫的危害。以后每年都要喷... Gray magpie control pine caterpillar success Xu Zhenjun Miyun Reservoir elegant environment, clear water reservoir. In the lower reaches of the reservoir and the mountains on both sides of the lake road growth of lush pine, not only beautify the environment, but also wind and sand, soil and water conservation, to protect the capital of this pot of water played a significant role. In 1978, more than a million acres of pine forests around the reservoir began to be detrimental to pine caterpillars. After each year to spray ...