| 魏赛金,王世强,李昆太,涂国全,潘晓华.链霉菌702对水稻种子萌发、幼苗生长及土壤微生物的影响[J].农业环境科学学报,2014,33(5):853-861. |
| 链霉菌702对水稻种子萌发、幼苗生长及土壤微生物的影响 |
| Effects of Streptomyces 702 on Seed Germination and Seedling Growth of Rice and Soil Microbes |
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| DOI：10.11654/jaes.2014.05.005 |
| 中文关键词: 链霉菌702 种子萌发 秧苗生长 微生物群落 |
| 英文关键词: Streptomyces 702 seed germination seedling growth microbial community |
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| 中文摘要: |
| 土壤微生物及其代谢产物往往会对作物生长产生影响。以春光1号水稻为供试种子，链霉菌702及其代谢产物为供试菌和抗生素，通过盆栽试验研究链霉菌702及其代谢产物农抗702对水稻种子萌发、秧苗素质和土壤微生物区系影响。结果表明，低浓度农抗702促进水稻种子萌发、胚根和芽的生长，根系活力提高，但含糖量下降；种子中的淀粉酶活性、蛋白质含量随农抗702浓度的升高先升后降。施加链霉菌702菌剂后土壤细菌和霉菌数量均有所减少，放线菌数量增加，硝化细菌和亚硝化细菌减少，好气性纤维素分解菌增加，土壤微生物不同生理类群的变化，加速了土壤养分循环，增强了水稻的养分吸收，从而促进水稻生长。 |
| 英文摘要: |
| Soil microbes and their metabolites may influence crop growth. A pot experiment was conducted to investigate the effects of Streptomyces 702 and its metabolites（Ag-antibiotic 702） on seed germination and seedling growth of rice（Spring No.1） and soil microbial flora. Seed germination and radicle and bud growth were improved under low concentrations of Ag-antibiotic 702. With increasing Ag-antibiotic 702 concentrations, amylase activity and protein contents increased at first and then decreased. In addition, root vigor was enhanced, while sugar contents were reduced by the Ag-antibiotic 702. Additions of Streptomyces 702 agent tended to decrease soil bacteria, mold, nitrobacteria and nitrifying bacteria, but significantly increased actinomycetes and aerobic cellulose decomposing bacteria. |
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