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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (15): 193-201.doi: 10.11924/j.issn.1000-6850.casb14120082

所属专题： 小麦

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

微生物菌剂与耕作方式对冬小麦土壤化学性状的影响

吴克侠,耿丽平。,赵全利,李小磊,陆秀君   

  1. 河北省唐山市第十一中学,河北农业大学资源与环境科学学院,河北农业大学,河北黄骅市农牧局动物卫生监督所,河北农业大学植保学院
  • 收稿日期:2014-12-12 修回日期:2015-05-11 接受日期:2015-01-16 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 耿丽平。
  • 基金资助:
    河北省高等学校创新团队领军人才培育计划“农田污染控制与修复”(LJRC016)

Effects of Different Microbial Inoculants and Tillage Types on the Soil Chemical Properties of during Growth of Winter Wheat

吴克侠,,, and   

  • Received:2014-12-12 Revised:2015-05-11 Accepted:2015-01-16 Online:2015-06-02 Published:2015-06-02

PDF (PC)

379

摘要： 为了解不同的耕作方式和微生物菌剂施用下土壤化学性状的动态变化特征，在玉米秸秆还田的基础上，于冬小麦季通过田间小区试验，研究了旋耕和深耕2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速效磷、速效钾、土壤微生物量碳氮的动态变化特征。结果表明，2种耕作方式下对土壤速效磷、速效钾、微生物量碳氮含量差异不显著，但小麦季不同生育期对这些的影响达到显著水平。旋耕方式下，施用（沼液+根际促生菌）和EM菌分别对土壤速效磷、土壤速效钾效果最明显；深耕方式下，施用（沼液 根际促生菌）和沼液分别对土壤速效磷、土壤速效钾效果最好；2种耕作方式下施用根际促生菌降低了土壤碳氮比值，有利于秸秆的腐解。土壤速效钾在小麦季收获期根区较非根区含量分别增加了44.31%（旋耕）和32.61%（深耕）。2种耕作方式下的根区土壤微生物量碳、氮显著高于非根区，且添加EM菌均能提高土壤微生物量碳、氮含量。

关键词: 快速繁殖, 快速繁殖

Abstract: In order to understand the dynamics of soil chemical characteristics (soil available phosphorus, soil available potassium and soil microbial biomass carbon, nitrogen) two types of tillage and different microbial inoculants during winter wheat growing periods based on straws returned in a field using the plots experiment. The results showed that two types of tillage had no significant effects on soil available phosphorus, available potassium, soil microbial biomass carbon and nitrogen content, but different growing stages showed the significant impact on these indices. Application of biogas slurry plant growth-promoting rhizo-bacteria or EM influenced the level of soil available phosphorus or soil available potassium in the rotary tillage markedly; Moreover, treatment of biogas slurry plant growth-promoting rhizo-bacteria or biogas slurry produced the effect on soil available phosphorus or soil available potassium in the deep tillage.The addition of plant growth-promoting rhizo-bacteria compared with control could reduce soil carbon nitrogen ratio, and enhanced the decomposition of straw. The soil available potassium in the root zone increased by 44.31% (rotary tillage) and 32.61% (deep tillage) comparing to that in the non root zone at the wheat harvest stage. Soil microbial biomass carbon or nitrogen in root zone was higher than that in non root zone for two types of tillage, and application of EM Strain improved the levels of soil microbial biomass carbon, microbial biomass nitrogen.