玉米秸秆还田配施生防放线菌S024对麦田土壤微生物及小麦纹枯病的影响  

Effects of maize residue return in combination with S024 on soil microbial population and wheat sharp eyespot

作　　者：王振跃[1] 施艳[1] 李洪连[1] 

机构地区：[1]河南农业大学植物保护学院,郑州450002

出　　处：《生态学杂志》2011年第2期311-314,共4页Chinese Journal of Ecology

基　　金：中国科学院知识创新工程重大项目(KSCX1-YW-09-05);国家"十一五"科技支撑计划项目(2006BAD02A07-1)资助

摘　　要：采用大田人工接种的方法,研究了玉米秸秆不同还田量以及玉米秸秆还田与生防放线菌S024同时施用对麦田土壤微生物、小麦纹枯病和小麦产量的影响。结果表明:玉米秸秆还田能够显著增加土壤细菌和放线菌数量;秸秆还田同时施用生防菌,拔节期土壤放线菌数量与不还田(对照)相比,平均增加50%,土壤中小麦纹枯病菌的数量与对照相比减少了20%。秸秆还田处理在拔节期对小麦纹枯病有较好的防病效果,其中生防菌+秸秆加倍还田(9000kg.hm-2)处理的防病效果最好,病情指数减退率达57.4%。玉米秸秆还田对小麦有一定增产作用,其中生防菌+秸秆加倍还田处理增产幅度最大,增产23.1%。A field experiment was conducted to study the effects of maize residue return and its combination with biocontrol actinomyces agent S024 （Streptomyces sp.） on the soil microbial population,wheat sharp eyespot （Rhizoctonia cerealis）,and wheat yield. Returning maize residue into soil had significant effect on the increase of the amounts of soil bacteria and actinomyces. The combination of maize residue return with S024 inoculation increased the amount of actinomyces at shooting stage by 50% and decreased the amount of wheat sharp eyespot by 20%,compared with the control （no maize residue return）. Returning maize residue into soil showed a better control effect on wheat sharp eyespot at shooting stage,and the treatment of doubled residue return （9000 kg·hm-2） combined with S024 inoculation had the best effect,with the disease index decreased by 57.4%. Returning maize residue into soil had definite effect in increasing wheat yield. Doubled residue return combined with S024 inoculation increased the yield most,and the increment reached 23.1%.

关 键 词：秸秆还田 土壤微生物 生防放线菌 小麦纹枯病 小麦产量 

分 类 号：S141.4[农业科学—肥料学] S435.121[农业科学—农业基础科学]