干旱区生态环境知识资源中心(Arid): 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

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	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
其他题名	Characters of different tillage treatments on soil enzymes and microflora in the southern Mu Us desert
	曹伟鹏 1; 吴发启 1; 雷金银 2; 赵龙山 1; 云峰 1; 于小玲 1
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2011
卷号	29 期号:1 页码:88-95
中文摘要	选取了典型的干旱半干旱农牧交错带农田作为研究对象,在连续6年的长期定位试验基础上探究了不同耕作措施下土壤酶和土壤微生物区系的特征,用逐步回归法建立了土壤养分与土壤酶和土壤微生物的最优回归模型.结果表明:(1)020 cm土层中,过氧化氢酶在免耕措施下活性最高;磷酸酶活性秸秆覆盖和免耕措施显著高于翻耕和覆膜措施;脲酶活性秸秆覆盖措施最低;蔗糖酶活性秸秆覆盖措施显著高于其它措施.在2040 cm土层中,免耕措施下磷酸酶,脲酶和蔗糖酶的活性较高.(2)剖面上过氧化氢酶活性随土层深度增加在秸秆覆盖措施下呈现逐渐递减,在免耕措施下呈现先增大后减弱的趋势,40 cm以下土层翻耕措施过氧化氢酶活性较040 cm有所增大;磷酸酶,脲酶,蔗糖酶活性随土层深度增加减弱,免耕和秸秆覆盖措施下酶活性分层明显.(3)020 cm土层微生物数量变化最大,2040 cm土层变化较小.在微生物数量差异大的020 cm土层,秸秆覆盖和免耕措施下细菌,真菌,放线菌数量显著高于翻耕和覆膜措施下的菌数.(4)剖面上微生物数量总体上随着土层加深数量减少,其中秸秆覆盖和免耕措施下层次间微生物的数量差异明显
英文摘要	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
中文关键词	耕作措施 ; 土壤微生物 ; 养分 ; 土壤酶
英文关键词	tillage treatment soil microorganism soil nutrient soil enzyme relevance
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4116168
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226406
作者单位	1.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国; 2.宁夏农林科学院农业资源与环境研究所, 银川, 宁夏 750002, 中国
推荐引用方式 GB/T 7714	曹伟鹏,吴发启,雷金银,等. 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]. 西北农林科技大学,2011,29(1):88-95.
APA	曹伟鹏,吴发启,雷金银,赵龙山,云峰,&于小玲.(2011).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.干旱地区农业研究,29(1),88-95.
MLA	曹伟鹏,et al."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".干旱地区农业研究 29.1(2011):88-95.