摘要
[目的]调查竹溪县烟叶种植田间土壤酸碱度的现状，提出相应的改良措施。[方法]对全县5个乡镇38个行政村583户烟农的817个田块进行检测。[结果]全县土壤pH平均值为6．30，最大值为8．5，最小值为5．0，pH在6．5以下的样本数579个，占比70．9％，整体呈弱酸性。适宜烤烟生长的土壤样本（pH 5．5～7．0）有736个，占比90．09％。[结论]竹溪县烟田土壤以弱酸性（pH 5．5～6．5）为主。当前土壤酸化现象并不严重，通过持续开展增施有机肥、种植绿肥、轮作、硝酸钾替代硫酸钾等改良措施，竹溪县仍为适宜生产优质烤烟的区域。
Abstract
Objective] To study the status of soil pH value of tobacco field in Zhuxi city, and to put forward the improving measures.[ Meth-od] The soil pH values of 817 fields belonging to 587 tobacco families of 38 villages in 5 towns were measured.[ Result] The county average soil pH value was 6.30, the maximum value was 8.5, the minimum value was 5.0.The pH values of 579 samples were all lower than 6.5, which accounted for 70.9% and indicated that the most of the tested soil samples were the weak acid.Soil pH values of 736 samples were be-tween 5.0 to 7.0, which was suitable for the tobacco growth, and accounted for more than 90.09%.[Conclusion] The soil pH value of to-bacco fields is mainly weak acidity in Zhuxi County.There is acidification phenomenon in soil at present, but it is not serious.Zhuxi County is still the suitable production area for high-quality flue-cured tobacco by carrying out the sustained increase of organic fertilizer, planting green manure, crop rotation, replacing potassium sulfate by potassium nitrate.
国家科技期刊平台
NSTL
维普
万方数据