设为首页  |   加入收藏
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 67次   下载 74 本文二维码信息
码上扫一扫!
分享到: 微信 更多
复合微生物菌剂对棉花生理特性及根际土壤 微生物和化学性质的影响
宋以玲,于 建,陈士更,肖承泽,李玉环,苏秀荣,丁方军
1.山东农大肥业科技有限公司 泰安;2.山东省腐植酸高效利用工程技术研究中心 泰安;3.山东农业大学资源与环境学院 泰安;4.山东农业大学化学学院学院 泰安
摘要:
为了系统地阐述复合微生物菌剂在改善土壤化学性质、生物学性质和促进植物生长方面的效果及机理,采用盆栽试验,研究常规和灭菌条件下不同用量的微生物菌剂对棉花生长、生理代谢、根际土壤生物学特性和养分含量的影响。结果表明:施用复合微生物菌剂能够提高苗期棉花叶片光合色素总量,叶片和根系内抗氧化物酶(SOD、POD、CAT)活性,降低过氧化物质含量(MDA、O2?-),进而提高了棉花的光合性能和抗氧化能力;降低了土壤pH,提高了根际土壤细菌和放线菌数,而降低了根际土壤真菌数,同时提高了根际土壤脲酶、中性磷酸酶、蔗糖酶和脱氢酶活性,最终提高了根际土壤有效养分和有机质含量,改善了根际微域环境,促进了棉花苗期生物量的累积和抗病性。除根际土壤养分含量外,常规复合微生物菌剂对各指标的改善效果优于灭菌复合微生物菌剂,且用量为10 L/667m2时效果较明显。因此,复合微生物菌剂可通过改变土壤pH,改善根际土壤微生物群落的数量和结构来改变土壤酶活性和有效养分含量,优化根际生长环境,增强植物抗逆性和光合能力,最终实现养地增产的效果。此外,复合微生物菌剂中的有益活菌在改土、促生方面具有极其重要的积极效应。
关键词:  复合微生物菌剂  棉花  抗氧化系统  土壤微生物  土壤酶
DOI:10.13758/j.cnki.tr.2019.03.009
分类号:S144.1;S562
基金项目:泰山产业领军人才工程项目(LJNY201612)和山东省重点研发计划项目(2015GNC110025)资助。
Effects of Complex Microbial Agent on Cotton Physiological Characteristics, Microorganism and Physicochemical Properties in Rhizosphere Soil
SONG Yiling1,2, YU Jian1,2, XIAO Chengze1,2, CHEN Shigeng1,2, LI Yuhuan3, SU Xiurong4, DING Fangjun’’1,5,3
1.Shandong Agricultural University Fertilizer Science Technology Co Ltd,Taian,;2.Engineering Technology Research Center of High Efficient Utilization of Humic Acid of Shandong Province,Taian;3.College of Resources and Environment,Shandong Agricultural University,Taian;4.College of Chemistry,Shandong Agricultural University,Taian;5.Engineering Technology Research Center of High Efficient Utilization of Humic Acid of Shandong Province,Taian,
Abstract:
To elucidate the effects and mechanism of complex microbial agent on the improvement of soil chemical and biological properties and the promotion of plant growth, the effects of different dosages of convention and sterilization complex microbial agents on growth, physiological metabolism of cotton and biological characteristics and nutrient contents in rhizosphere soil were investigated. Results showed that adding complex microbial agent increased chlorophyll content in cotton leaves, enhanced the activities of antioxidant enzymes (SOD, POD, CAT), reduced the contents of reactive oxygen species (MDA, O2?-) in both leaves and roots, then increased photosynthetic performance and the ability to resist oxidative stress. Besides, it reduced soil pH, increased the amounts of soil bacteria and actinomycetes, decreased the number of soil fungi, increased the activities of soil urease, phosphatase, invertase and dehydrogenase, increased the contents of available nutrients and organic matter in soil, thus, improved the rhizosphere environment, and promoted cotton biomass accumulation and disease resistance. The above indexes except soil nutrient contents influenced by convention complex microbial agent were better than sterilization complex microbial agent, and the dosage of 10 L/667m2 got the more obvious effect. In summary, the application of complex microbial agent could change soil enzyme activities and available nutrients by improving the number and structure of soil microbial community and soil pH, thus optimize the rhizosphere environment and increasing plant stress-resistance and photosynthetic ability, and consequently enrich soil and increase crop production. What’s more, the beneficial live bacteria in complex microbial agent had a particularly important positive effect on plant growth and soil improvement.
Key words:  Complex microbial agent  Cotton  Antioxidant system  Soil microorganism  Soil enzyme

您是第2306735位访问者
版权所有 © 《土壤》编辑部
本系统由北京勤云科技发展有限公司设计   京ICP备09084417号