广西隆林县植烟土壤肥力评价

Evaluation on Tobacco-planting SoilFertility in LonglinCounty of Guangxi

以隆林烟区土壤为评价单元,采集了134个土壤样品,测定了主要理化性质指标,并采用模糊数学综合法评价了植烟土壤肥力,旨在揭示烟区土壤养分含量丰缺及植烟适宜等级状况,科学指导烤烟种植的施肥和种植区域调整。结果表明:隆林烟区土壤pH和全氮、速效磷、水溶性氯含量适宜,有机质、有效硼、有效镁含量偏低,速效钾含量中等,有效硫和有效钙含量偏高。隆林县东北部部分烟区、南部小部分烟区及西部小部分烟区肥力适宜性等级低,不利于优质烟草的种植。

Taking tobacco-planting soils in Longlin of Guangxi as the studyobjects,134 soil samples were collected,main chemicalindexes in soil samples were measured,and then soil fertility was assessed by using fuzzy mathematics comprehensive method in order to reveal the statusof soil chemicalindexes and scientifically guide the fertilization and planting area adjustment of flue-cured tobacco.The results showed that according to grade standards ofsoilchemicalindexes,soil pH,total nitrogen,available phosphorus,and water-soluble chlorine were suitable,organic matter,available boron and available magnesium were lower,available potassium was medium,and available sulfur and available calcium were higher.Part of the tobacco area in the northeast of Longlin County,a small part of the southern part of the tobacco and a small part of the western part of the tobacco are of low fertility suitability level,which is not conducive to the cultivation of high-quality tobacco.