重庆市黔江区植烟土壤养分分析与评价

为了了解重庆市黔江区植烟土壤的肥力状况，提高优质烟叶的产量与质量，通过叠加图对黔江主要烟植区进行采样，经过土壤养分的分析测定后，对烟植区各土壤类型的主要养分进行综合评价。结果表明：（1）黔江烟植区土壤多呈弱酸性或中性，速效磷、速效钾和有机质含量较高，大多数土壤能达到优质烟叶的生产要求；（2）速效氮含量偏低，符合烟草种植施肥特点；（3）黔江烟植区土壤中黑砂壤、黄壤的综合评价指数相对较高，适宜于优质烟叶的种植和生产。烟植区各土壤类型评价指数与当地农业生产实际相吻合，对当地烤烟生产具有指导意义。

Analysis and Evaluation of Tobacco-Growing Soil Nutrient in the Qianjiang District of Chongqing City

In order to understand states of tobacco soil fertility and improve the quality of tobacco leaf production in the qianjiang district of chongqing city,stacking diagram was adopted to sample and analyze in main tobacco-growing areas.The research comprehensively evaluated main nutrient of soil type.The results showed that：firstly,tobacco-growing soil was mostly weak acid or neutral,the contents of available phosphorus,available kalium and organic matter were higher.Most soil fertility was satisfied with production requirement of sound tobacco.Secondly,the content of available nitrogen was lower in the soil,it was to meet the demand of planting tobacco.Thirdly,synthetic appraising index of black sandy loam and yellow soil were higher in qianjiang district.Tobacco-growing soil was suitable to the planting and production of sound tobacco.In the tobacco-growing area,the evaluation index of soil type coincided with the local agricultural production,which had a significance to the local flue-cured tobacco production.