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不同轮作方式对牡丹江地区烟田土壤微生物数量及分布的影响
引用本文:李喆,元野,马力,唐庆明,邹莉.不同轮作方式对牡丹江地区烟田土壤微生物数量及分布的影响[J].东北林业大学学报,2010,38(7).
作者姓名:李喆  元野  马力  唐庆明  邹莉
作者单位:1. 东北林业大学,哈尔滨,150040
2. 黑龙江省烟草研究所
3. 黑龙江省平山林业制药厂
基金项目:黑龙江省烟草行业科技开发项目 
摘    要:采用稀释平板培养法,分析不同轮作方式下牡丹江地区烟田土壤微生物数量及其主要生理类群分布规律。结果表明:3大类土壤微生物中细菌数量占绝对优势,占总菌数的99%以上;放线菌次之,真菌最少。烟田土壤微生物各主要生理类群中,好气性纤维素分解菌数量最多,氨化细菌次之,好气性固氮菌最少。各土层土壤微生物类群间具有较为显著的相关性。不同轮作方式对烟田土壤微生物的数量和分布会产生很大影响,微生物总数量上,轮作样地(I1、I2、I3)及迎茬样地(I5)显著高于连作样地(I4、I6),连作4a地块(I4)微生物数量少于连作1a地块(I6),说明连作对土壤微生物的影响会随着连作年数的增加而加剧。

关 键 词:烤烟  轮作  连作  土壤微生物

Effects of Different Rotations on the Amount and Distribution of Soil Microorganisms in Mudanjiang Tobacco-cropping Areas
Li Zhe,Yuan Ye,Ma Li,Tang Qingming,Zou Li.Effects of Different Rotations on the Amount and Distribution of Soil Microorganisms in Mudanjiang Tobacco-cropping Areas[J].Journal of Northeast Forestry University,2010,38(7).
Authors:Li Zhe  Yuan Ye  Ma Li  Tang Qingming  Zou Li
Institution:Li Zhe(School of Forestry,Northeast Forestry University,Harbin 150040,P. R. China),Yuan Ye(Heilongjiang Institute of Tobacco Science),Ma Li(Heilongjiang Pingshan Forest Pharmaceutical Factory),Tang Qingming,Zou Li(Northeast Forestry University)
Abstract:An experiment was conducted to investigate the amount and distribution of soil microbial communities in tobacco-cropping areas by the dilution plating method. Results showed that bacteria were dominant,accounting for 99% of the total number of microorganisms,and followed by actinomyces and fungi. Among the main physiological groups of soil microorganisms,aerobic cellulose-decomposing bacteria were most numerous,followed by ammonifying bacteria,and the amount of aerobic nitrogen-fixing bacteria was lowest. A...
Keywords:Flue-cured tobacco  Crop rotation  Continuous cropping  Soil microorganisms  
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