种植模式及施肥对遵义烤烟产质量和土壤的影响

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在遵义市的烤烟栽培中,长期连作和大量施用化肥的现象十分普遍,由此带来了一系列生产、土壤和环境问题,如烟叶产质量降低、风格特色逐渐消失;土壤有机质减少、物理性质恶化、微生物种群结构改变;肥料利用率降低和环境污染等。为此,本文作者设置利用长期定位试验,设置烤烟-玉米轮作+有机无机配施(50%化肥+50%有机肥)、烤烟-玉米轮作+单施化肥、烤烟-烤烟连作+有机无机配施(50%化肥+50%有机肥)、烤烟-烤烟连作+单施化肥;并利用田间试验设置不施肥,单施化肥,75%化肥+25%有机肥、50%化肥+50%有机
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