生石灰修复酸性植烟土壤合理施用量研究

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Study on the Reasonable Application Amount of Quicklime for Amending Acidic Tobacco-planting Soil

YANGRui-weiGUXiang，SONGXing-yietal（EnshiTobaccoCompanyofHubeiProvincialTobacoCorporation，XianfengHubei ）

AbstractAstudyascoductedtoivestigatetereasoableaplicationmountofquicklieanditsefetohepreventionandctrolof tobaccorotandstediseasinaciictobacplantingsolsofentacidityvelsThesultssoedtatfostroglycidcil（p 4.0-4.5 ），the mean price and output value of tobacco leaves were the highest with the quicklime application of 1500kg/hm2 .For mildly acidic soils （ ），the highest mean price of tobacco leaves was achieved with the quicklime application of 1 125kg/hm2 .For slightly acidic soils （pH5.1-5.6） ，the highest yield，mean price，and output value of tobacco leaves were obtained with the quicklime application of 750kg/hm2 .The applicationof anappropriate amount of quicklime inacidic tobacco-planting soilscan promote the growth anddevelopmentoflueuredbaccoaethseasesistancefbaccondeducethideneadseaseidexofotdis ses.

Key wordsFlue-cured tobacco;Acidic soil;Quicklime;Application amount;Root and stem diseases

由于长期片面重视化学肥料，轮作不足，掠夺性用地现象严重，培肥地力措施缺乏，导致土壤环境恶化，土壤酸性增强[1-2]，烟草根茎部病害（主要有青枯病、黑胫病、根黑腐病）普遍发生，严重影响产区烟叶产质量[3-4]。（剩余6448字）