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最近,从灵寿县林业旅游局传出喜讯:他们经过3年的研究和示范,用粘虫胶防治油松毛虫,虫口密度下降率在50%以上,成本仅是农药防治的1/5。
Recently, the good news came from Lingshou County Forestry Tourism Bureau: After 3 years of research and demonstration, they used sticky shellac to control the pine caterpillars. The population densification rate dropped to over 50% and the cost was only 1/5 of the pesticide control.