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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (3): 20-25.

所属专题： 生物技术； 小麦

• 农学 农业基础科学 • 上一篇    下一篇

微生物菌剂与2种耕作方式下冬小麦生育期内土壤酶活性的动态变化

李小磊 刘文菊 赵全利 耿丽平 张丽娟 刘 楠 乔 斌   

  • 收稿日期:2010-07-07 修回日期:2010-08-25 出版日期:2011-02-05 发布日期:2011-02-05
  • 基金资助:

    国家“十一五”科技支撑计划“粮食丰产科技工程项目”；农业部公益性行业计划项目

Dynamics of Soil Enzymes Activities under Two Types of Tillage and Different Microbial Inoculants during Growth of Winter Wheat

  • Received:2010-07-07 Revised:2010-08-25 Online:2011-02-05 Published:2011-02-05

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摘要：

摘要: 通过田间小区试验，在秸秆还田的基础上研究了旋耕和深耕两种耕作方式以及添加不同外源微生物菌剂条件下，冬小麦不同生育期土壤脲酶、碱性磷酸酶和纤维素酶活性的动态变化特征。结果表明，旋耕和深耕没有明显影响土壤脲酶和纤维素酶的活性，而旋耕显著提高了碱性磷酸酶的活性；在小麦生育期内，土壤脲酶活性在拔节期明显降低，施入拔节肥后其活性逐渐增强，在孕穗期达到峰值；土壤碱性磷酸酶活性则随生育期的延长呈逐渐增加的趋势；土壤纤维素酶活性自返青至拔节逐渐降低，在拔节期达到最低，随着拔节期氮肥的施用其活性呈逐渐增加的趋势；无论是旋耕和深耕，小麦收获期土壤根区脲酶、碱性磷酸酶和纤维素酶的活性均显著高于非根区。此外，施用不同微生物菌剂对三种土壤酶的活性没有产生显著影响。

关键词: 散尾葵, 散尾葵, 提取物, 空气浮游菌, 抑菌力

Abstract:

Abstract: Dynamics of soil enzymes activities ( soil urease, alkaline phosphatase，cellulase) were studied under two types of tillage and different microbial inoculants during winter wheat growing periods based on straws returned in a field experiment. The results showed that there were no significant differences in soil urease and cellulase activities between the rotary tillage and deep plowing during wheat growth period, however, soil alkaline phosphatase activity was significantly increased by the rotary tillage. During the wheat growth stages, soil urease activity reduced markedly at jointing stage and increased gradually with nitrogen fertilizer applied, even reached the peak at the booting stage. Soil alkaline phosphatase activity increased slightly with increasing of growing stages. Soil cellulase activity reduced gradually from turning green stage to jointing stage and was the minimum at jointing stage, while the cellulase activity showed the increasing trend for urea application from jointing stage to wheat maturity. Moreover, the soil enzymes activities in rhizosphere were significant higher than those in non-rhizosphere during whole growing stage of winter wheat. Finally，the different microbial inoculants application had no markedly effects on the activities of three soil enzymes.