Based on the survey of flue-cured tobacco per leaf weight in Tongren ,the status of the flue-cured tobacco per leaf weight was presented,analyzing the problems of per leaf weight,puting forward the countermeasures of improving the quality of tobacco in purchasing policy and technology. The aim is to provide a theoretical guidance for sustainable and healthy development of the flue-cured tobacco industry in Tongren.

从与烟草生长发育密切相关的温度、日照、降雨量等气候因子入手,采用统计分析方法,分析2014年铜仁市异常气候条件下光照、温度及降雨量对铜仁市烤烟生长发育和产量的影响.结果表明,苗期日照时数显著偏少成苗素质降低；移栽至还苗期寡照对烤烟移栽有利但不利于还苗；旺长期强降雨等强对流天气多发、光照不足,灾情较严重,不利于烟株早生快发,对烤烟产质造成重大不利影响；成熟期多雨寡照、高温高湿不利于于物质累积,病害严重,影响烟叶品质.特别是4月下旬、5月下旬、6月上旬、7月中旬、8月中旬全市出现持续性暴雨、大暴雨、局部特大暴雨,给烤烟生产造成了严重损失.总体来说,2014年铜仁市烤烟生产的农业气候条件较差,烟叶产量和质量均下降.

This paper summarizes the research progress on stem content of flue-cured tobacco,elaborating tobacco from different are-as,different kinds of tobacco,cultivation modulation measures ,the processing method and the location of tobacco leaves which affect stem content of flue-cured tobacco,and puts forward the prospect of the research of flue-cured tobacco stem content.

为探明不同的种植模式对烤烟根际土壤养分、酶活性以及烟草生长的影响，进行了田间小区试验。结果表明，半膜全生育期地膜覆盖能不同程度地提高根际土壤水解氮、有效磷、速效钾和有机质的含量，增加根际土壤过氧化氢酶、碱性磷酸酶和酸性磷酸酶活性，促进烟株地上部的生长，提高烟叶产量和产值。半膜覆盖栽培作为一种新的种植模式，在有效改良土壤理化性状和促进烟株生长发育的同时，可大大降低地膜对环境的污染，促进环境的可持续发展，具有一定的推广应用前景。