【摘要】 １９９８ 年８－ ９ 月，通过对“黑土滩”退化面积和退化程度的调查，“黑土滩”蔓延日趋严重，危害面积由１９９３ 年的１．４ 万ｈｍ ２ 蔓延至１９９８ 年的３．３ 万ｈｍ ２，五年时间增长了１３５．７％ 。由此分析了“黑土滩”形成的原因，提出了治理“黑土滩”的建议。更多还原

【Abstract】 From investigation of “Black soil” deteriorated grassland in Aug-Sep. 1998. “Black soil” deteriorated grassland area was 14000ha in 1993, and increased to 33000ha in 1998. It was increased by 135.7% during five years. This paper analysed reason of causing “Black soil”, and put out ways for management of deteriorated grassland.更多还原