【摘要】 本文着重介绍了我国北方草原几个主要类型区牧草害虫的种类、分布和为害,各类草场害虫的优势种群和发展趋势,为草原害虫的防治提供了科学依据。更多还原

【Abstract】 We investigated into the kinds ,distribution and harmfulness of pests at major typical areas in the northern grassland of China, and domonant populations and developmental tendency in various typical pasture. The results of investigation may provide scientific basis for the prevention,control and elimination of pests.更多还原