贵州岩溶山区不同类型人工草地杂草发生程度调查

摘要

Eight representative regions,including 20 counties,were selected to conduct the survey on weeds in different types of sowed pastures in karst mountains of Guizhou Province.The results indicated that the invasive weeds belonged to 26 families and 79 species.The weeds distribution of more than 88% of the surveyed pastures reached general level,it suggusted that weeds were widely distributed in sowed pastures.The frequency of weeds occurrency was mainly between 10% and 45%.%选取贵州省具有代表性的8个地区（市）20个县、市岩溶山区不同类型人工草地进行杂草调查,侵害草地的杂草隶属于26科79种。通过调查统计分析,不同类型人工草地杂草分布达＂一般分布＂的占到88%,人工草地的杂草分布比较广泛;杂草出现频率10%～45%,人工草地的杂草发生程度比较普遍。初步掌握发生草地杂草的种类及其规律,为进一步提高草地利用效率提供了借鉴依据。