移栽方式对烤烟土壤根际微生物的影响

Effects of Transplanting Methods on Soil Rhizosphere Microbial in Flue-cured Tobacco

为探索龙江特色优质烤烟的移栽方式，研究了4种移栽方式对烤烟土壤根际微生物的影响。结果表明：高茎壮苗移栽、井窖式移栽、移栽机移栽烤烟土壤根际微生物数高于常规地膜移栽，特别是高茎壮苗深栽和井窖式移栽对烤烟土壤根际微生物数量的增加幅度较大。与常规地膜移栽相比，高茎壮苗深栽烤烟土壤在不同生育期的根际细菌数量增幅达42．9％～139．5％，根际放线茵增幅达27．1％～110．2％，根际真菌增幅达i00．2％～300．3％。井窖式移栽烤烟土壤在生育期过的根际细菌数量增幅达10．2％～319．2％，根际放线茵增幅达8．4％～230．3％，根际真菌增幅达69．3％～230．3％。研究表明，高茎壮苗深栽和井窖式移栽能提高烤烟土壤根际微生物数量。

In order to explore the transplanting method of the high quality flue cured tobacco in Longjiang, the effects of four transplanting methods on soil microbial in flue-cured tobacco were studied. The results showed high seedling transplanting stem,well cellar type transplanting,transplanting machine transplanting flue-cured tobacco rhizosphere soil microbial number were higher than that of conventional film transplanting, especially high seedling deep transplanting and well cellar type transplanting greatly increased the number of soil microor- ganisms in the rhizosphere of tobacco. Compared with the conventional film transplanting, high seedling deep transplanting of tobacco soil in different growth period the number of rhizosphere bacteria increased by 42.9%~139.5% ,the growth rate of rhizosphere actinomycetes increased by 27. 1% ~ 110.2%, the growth rate of the rhizosphere fungi was 100.2 % ~ 300.3 %. Well cellar type transplanting flue-cured tobacco soil in the growth period of the rhizosphere bacterial number increased by 10.2% ~319.2% ,the growth rate of rhizo- sphere actinomycetes increased by 8.40% ~230.3% the growth rate of the rhizosphere fungi was 69.3%~230. 3%. Research showed high seedling deep transplanting and well cellar type transplanting could improve the quantity of soil microorganism in the rhizosphere of Flue-cured Tobacco.