烤烟不同生育期土壤酶及微生物活性的变化
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河南省烟草专卖局重点科技攻关项目(HYKJ200703)资助


Changes of soil enzyme activities and microorganism amounts at different growing stages of flue-cured tobacco
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    摘要:

    在盆栽条件下研究了烤烟不同生长发育阶段土壤酶和微生物的变化规律。结果发现:随着烤烟的生长,过氧化氢酶活性、碱性磷酸酶活性、细菌数量以及砂壤土条件下的硝化细菌和解磷细菌都表现为先降后升再降的规律;硝酸还原酶活性、砂壤土条件下的氨化细菌和壤土下的解钾细菌数量表现为先升后降后期有所回升的规律;淀粉酶活性、真菌、放线菌、壤土条件下的解磷细菌和砂壤土下的解钾细菌数量表现先降后升。除碱性磷酸酶外,所测的土壤酶和微生物在烤烟不同生育阶段差异极显著。这说明在烤烟-土壤-土壤酶及微生物相互作用的系统中,土壤酶活性和微生物数量明显受到烤烟生长发育的影响。

    Abstract:

    A pot experiment was conducted to study the changes of soil catalase, sucrose, nitrate reductase, amylase, alkaline phosphtase, the amounts of soil bacteria, fungi, actinomycete, ammonifier, nitrobacteria, phosphate-dissolving bacteria and potassium-dissolving bacteria at different development stages of flue-cured tobacco. The results showed that during tobacco growth, soil catalase, alkaline phsphtase activity and the amounts of soil bacteria and ammonifier in sandy loam descended first, then ascended and descended again. But soil nitrate reductase, ammonifier in loam soil and potassium-dissolving bacteria in sandy loam significantly ascended at the early stages and then declined during tobacco growth, but ascended slightly again at the end. Soil sucrose, fungi, actinomycete, phosphate-dissolving bacteria in loam soil and potassium-dissolving bacteria in sandy loam descended at the early stages then ascended. Except for soil alkaline phosphtase, the variance analysis showed that all the test materials reached the extremely significant level (p≤0.01) at different growing stages. It suggests that soil enzyme activity and the amount of microorganism could be affected obviously by tobacco growth under the interaction system of the tobacco, soil and microorganisms.

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张友杰,刘国顺,叶协锋,李琰琰,何 川,李 伟,孟颖梅,袁冰丽.烤烟不同生育期土壤酶及微生物活性的变化[J].土壤,2010,42(1):39-44. ZHANG You-jie, LIU Guo-shun, YE Xie-feng, LI Yan-yan, HE Chuan, LI Wei, MENG Ying-mei, YUAN Bing-li. Changes of soil enzyme activities and microorganism amounts at different growing stages of flue-cured tobacco[J]. Soils,2010,42(1):39-44

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