安徽南部丘陵山区退化人工草地的改良

采用小区试验和大面积应用的研究方法，结合地面处理，补播，除杂，稀土，根瘤菌接种综合措施，对安徽丘陵山区退化的人工草地进行改良试验，结果表明，鲜草产量提高１倍以上，优良牧草在草群中所占比重７０％以上，第５个处理为最佳组合，鲜草产量提高３．０４倍，优良牧草占草群经重９２．４％，此项改良措施在改造老播区中应用，取得了显著的效益。

TEST OF REGRESSIVE ARTIFICIAL GRASSLAND IMPROVED IN SOUTHERN ANHUI HILLY LAND AREA

Adopting the methods of plot test and large area applied and combining ground treatment, overdrilling, weeding, applying fertilizer, rare earth elements and legume inoculation etc comprehensive measures, the regressive artificial grassland in southern Anhui hilly area was improved. The results showed that yield of fresh grasses increased by more than one time, that of the fine herbages took account for over 70%. The fifth treatment was the optimum composition, yield of fresh grasses increased by 3.04 times, fine grasses took account for 92.4%. The improving measure was applied in transforming old sowing area, the significant efficiency was made.