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关于微生物制剂论文范文资料 与干旱胁迫条件下微生物制剂对烤烟根系生理特性影响有关论文参考文献

版权:原创标记原创 主题:微生物制剂范文 科目:发表论文 2024-01-27

《干旱胁迫条件下微生物制剂对烤烟根系生理特性影响》:此文是一篇微生物制剂论文范文,为你的毕业论文写作提供有价值的参考。

摘 要:为研究干旱胁迫条件下微生物制剂对烤烟根系生长发育及土壤含水率的影响,选用鲁烟1号为研究对象,通过盆栽试验,控制灌水量模拟不同干旱程度,研究了微生物制剂不同施用量对烟株根系营养发育、干鲜重及土壤含水率的影响.结果表明,一定量的微生物制剂可以促进鲁烟1号根系的生长发育及根系对氮、磷、钾的吸收,提高根系干鲜重;另外,相同干旱条件下,微生物制剂施用量增加,土壤含水率亦高,说明微生物制剂可能通过降低烟株水分利用量,提高土壤含水率.本试验结果以微生物制剂有机肥45 g/盆和灌水量为伸根期120 mm、旺长期160 mm和成熟期120 mm的处理效果最佳.

关键词:干旱胁迫;微生物制剂;烤烟;根系

中图分类号:S572.01文章编号:1007-5119(2015)06-0068-05DOI:10.13496/j.issn.1007-5119.2015.06.012

Effects of a Micro-biological Agent on Nutrition, Growth and Biomass of Tobacco Roots in Flue-cured Tobacco under Drought Stress

HAN Qingdian1, LIU Yu2, HAN Yutao2, LIU Lingxiao3, YANG Meijuan1,XIE Baodong1, HUANG Zexiang4

(1. College of Life Science of Linyi University, Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, Linyi, Shandong 276005, China; 2.Linyi Agricultural Bureau, Linyi, Shandong 276000, China; 3. Linyi Academy of Agricultural Sciences, Linyi, Shandong 276012, China; 4. Shandong Provincial Tobacco Company, Jinan 250098, China)

Abstract:To study the impact of microbial agents on tobacco root growth and soil moisture conditions under drought stress, the amount of root nutrition, growth, fresh and dry weights of tobacco roots were studied with different degrees of drought stress by controlling irrigation on Luyan 1 by using pot experiment. The results showed that a certain amount of microbial agents can promote Luyan the 1st root growth and root uptake of nitrogen, phosphorus, potassium, and increase root fresh and dry weight. In addition, under the same drought conditions, with the increase of microbial agent application, the soil moisture rate was higher, indicatingthat the microbial agent may improve soil moisture by reducing water using efficiency of tobacco. In this study the best resultswere obtained when 45g/potmicrobial agent was applied and when the irrigation amount was 120mm, 160mm, and 120mm atthe root spreading stage, the vigorous growing stage and the maturing stage respectively.

Keywords: drought stress; micro-biological agent; flue-cured tobacco; roots

烤烟根系是烟株重要的营养器官之一,它决定着烟株对土壤养分和水分的吸收,直接影响着烤烟植株的生长和发育[1-3].朱佩等[4]研究发现,不同质地土壤上烤烟根系对氮素的吸收利用效率不同.研究表明,微生物制剂在土壤中施用时,能够促进土壤团粒结构的形成、有效活化土壤,激活土壤中多种有效微生物并和其发生互作,增加土壤的生物活性效力,加速养分释放和土壤养分的有效化[5-7],在烤烟上施用能够诱导新叶和侧根发生,对根系生长有明显的促进作用[8-9].土壤湿度对烟草根系生长发育亦有很大影响[9-11].在山东烟叶产区,干旱常致使烟叶生长受阻,影响烟叶产量和品质.在气候干旱期间施用保水剂,对烟草的生长起着重要作用[12-13].针对山东省烤烟生产实际,本文研究了不同微生物制剂施用量对烤烟根系以及土壤含水率的影响,为干旱条件提高烟叶的产质提供理论依据.

1材料和方法

1.1 试验材料

微生物制剂论文参考资料:

微生物论文

病原微生物论文

结论:干旱胁迫条件下微生物制剂对烤烟根系生理特性影响为关于对不知道怎么写微生物制剂论文范文课题研究的大学硕士、相关本科毕业论文微生物制剂名词解释论文开题报告范文和文献综述及职称论文的作为参考文献资料下载。

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