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嫁接对番茄根际土壤微生态环境的影响 被引量:6

Effects of grafting on the soil micro-ecological environment of tomato rhizosphere
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摘要 以RZ-1为砧木、‘浦红968’为接穗进行嫁接,通过测定根际土壤微生物种群结构、土壤微生物量及土壤酶活性,研究了嫁接番茄对根际微生态环境的影响。结果表明:嫁接使番茄根际土壤的细菌、放线菌、土壤氨化细菌、硝化细菌、好氧自生固氮菌和纤维素分解菌的数量增加,真菌数量减少;根际土壤微生物量碳、氮高于自根对照,并且随着调查日期的推进,均呈先升高后下降的变化趋势。根际土壤脲酶和磷酸酶活性在测定时期内呈先升高后降低的趋势;根际土壤过氧化氢酶呈先降低后上升的趋势,根际土壤蔗糖酶的活性变化不明显,基本保持稳定。与自根苗相比,嫁接诱导根际土壤蔗糖酶、脲酶、磷酸酶和过氧化氢酶活性升高。 The tomato varieties RZ-1 and 'Puhong 968' were used as rootstock and scion respec- tively,and the effects of grafted tomato on rhizospheric micro-ecological environment were studied, through determining the rhizospheric microbial population structure in soil,soil microbial biomass and soil enzyme activity. The results showed that the amounts of rhizospheric soil bacteria, actinomyces, ammonifying bacteria, nitrifying bacteria, aerobic abiogenous azotobacter and cellulose decomposing bacteria of tomato increased,the fungi amount decreased. The microbial biomass(MBC, MBN)in grafted treatment were higher than CK,and showed the trend of first increased and then decreased with the advance of surveying date. In the determination of period, the rhizosphere soil urease and phosphatase activities increased firstly and then decreased, the rhizospheric soil catalase activity decreased firstly and then increased,and the change of rhizospheric soil sucrase activity was not obvious. Compared with CK, the activities of soil sucrase, urease, phosphatase and catalase increased in grafted treatment.
出处 《上海农业学报》 CSCD 北大核心 2014年第5期6-10,共5页 Acta Agriculturae Shanghai
基金 国家"863"计划项目(2012AA100103) 上海市科技支撑项目(13391901203) 上海市农业科学院青年基金[QJ2011(05)]
关键词 番茄 嫁接 根际微生物 土壤微生物量 土壤酶 Tomato Grafting Rhizospheric microorganism Soil microbial biomass Soil enzyme
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