干旱地区农业研究2011，Vol.29Issue(1)：88-95,8.
毛乌素沙地南缘不同耕作措施土壤酶和微生物区系的特征
Characters of different tillage treatments on soil enzymes and microfiora in the southern Mu Us desert
摘要
Abstract
Farmland in typical arid and semiarid agro-pastoral ecotone was selected to explore characteristics of soil enzymes and microflora in different tillage treatments based on six-year experiment. The results indicate: 1 ) In 0 ～ 20 cm soil layer, catalase activity was the highest in the NT measure; phosphatase activity was significantly higher in SM and NT measures than CT and FM measures; urease activity was the lowest in SM measures; sucrase activity was significantly higher in SM measures than in the remaining measure. In 20～40 cm soil layer, phosphatase, urease and invertase activity was high in NT measure. 2) Catalase activity was decreased with soil depth increased in the SM measure, increased first and then decreased in NT measure; in 40 ～ 60 cm soil layer catalase activity was higher than in 0 ～ 40 cm in CT measure; the remaining soil enzymes activities (phosphatase, urease, invertase) were decreased with soil depth increasing, obvious stratification in NT and SM measures. 3) The number of soil microorganisms was varimax in 0 ～ 20 cm,changed little in 20 ～ 40 cm soil layer. In 0 ～ 20 cm layer the number of soil microorganisms were significantly higher in SM and NT measure than in CT and FM measures. 4) The number of soil microorganisms were decreased with soil depth increasing in soil vertical section, the number of soil microorganisms differed significantly in SM and NT measures.关键词
耕作措施/土壤微生物/养分/土壤酶Key words
tillage treatment/ soil microorganism/ soil nutrient/ soil enzyme/ relevance分类
农业科技引用本文复制引用
曹伟鹏,吴发启,雷金银,赵龙山,云峰,于小玲..毛乌素沙地南缘不同耕作措施土壤酶和微生物区系的特征[J].干旱地区农业研究,2011,29(1):88-95,8.基金项目
国家林业部科技项目"08毛乌素沙地植被恢复"(K313020806) （K313020806）
