不同促腐条件下秸秆还田对土壤微生物量碳氮磷动态变化的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (10): 1903-1908.

不同促腐条件下秸秆还田对土壤微生物量碳氮磷动态变化的影响

张电学^1,3, 韩志卿¹, 李东坡^2,3, 刘微¹, 高书国¹, 侯东军¹, 常连生¹

1. 河北科技师范学院农学系, 昌黎 066600;
2. 中国科学院沈阳应用生态研究所, 沈阳 110016;
3. 沈阳农业大学土地与环境学院, 沈阳 110161

收稿日期:2004-11-15 修回日期:2005-03-28 出版日期:2005-10-15 发布日期:2005-10-15
通讯作者: 张电学,男,1968年生,副教授,博士生.主要从事土壤肥力与施肥、土壤资源管理教学与科研工作,发表论文20余篇.E-mail:zdxzjj@163.com
基金资助:
国家重点基础研究发展规划项目(1999011808-04)、中国科学院沈阳应用生态研究所知识创新工程重大项目(SCXZD0104-02)和河北省教育厅资助项目(990208).

Effects of returning maize straw into field on dynamic change of soil microbial biomass C,N and P under different promoted decay condition

ZHANG Dianxue^1,3, HAN Zhiqing¹, LI Dongpo^2,3, LIU Wei¹, GAO Shuguo¹, HOU Dongjun¹, CHANG Liansheng ¹

1. Department of Agronomy, Hebei Normal University of Science and Technology, Changli 066600, China;
2. Institute of Applied Ecology, Chinese Academy of Science, Shenyang 110016, China;
3. Soil and Environmental College, Shenyang Agricultural University, Shenyang 110161, China

Received:2004-11-15 Revised:2005-03-28 Online:2005-10-15 Published:2005-10-15

摘要/Abstract

摘要： 通过2年田间定位试验,研究了冀东地区小麦-玉米轮作制度下,不同促腐条件下玉米秸秆配施化肥直接还田对土壤微生物量C、N、P动态变化的影响,并讨论了其与土壤养分和酶活性的关系.结果表明,秸秆配施化肥并调节其C/N条件下,施用促腐剂处理作物各生育期土壤微生物量C、N、P均表现出高于未施用处理的趋势,并使微生物量N、P达到高峰期的时间提前,对土壤养分调控效果较好.土壤微生物量C、N、P与土壤酶活性在作物各生育期均表现为显著和极显著正相关关系,但与土壤碱解氮、有效磷的相关性受到施肥制度和作物生长的强烈影响.

关键词: 褐土, 秸秆还田, 促腐条件, 微生物量, 动态变化

Abstract: A 2-year field experiment of wheat-maize rotation was conducted on a cinnamon soil of east Hebei Province to study the effects of returning maize straw into field on the dynamics of soil microbial biomass C,N and P,and their relationships with soil nutrients and enzyme activities.The results showed that under the condition of returning maize straw combined with applying chemical fertilizer to adjust straw C/N,the application of effective microorganisms could increase soil microbial biomass C,N and P in each crop growth period,advance their peak time,and better regulate soil nutrient supply,compared with no application of effective microorganisms.Soil microbial biomass had a significantly positive correlation with soil enzyme activities,but its correlation with soil hydrolysable N and available P was strongly affected by crop growth and fertilization system.

Key words: Cinnamon soil, Returning straw into field, Promoted decay condition, Microbial biomass, Dynamic change

中图分类号:

S154.3

张电学, 韩志卿, 李东坡, 刘微, 高书国, 侯东军, 常连生. 不同促腐条件下秸秆还田对土壤微生物量碳氮磷动态变化的影响[J]. 应用生态学报, 2005, 16(10): 1903-1908.

ZHANG Dianxue, HAN Zhiqing, LI Dongpo, LIU Wei, GAO Shuguo, HOU Dongjun, CHANG Liansheng . Effects of returning maize straw into field on dynamic change of soil microbial biomass C,N and P under different promoted decay condition[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1903-1908.

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