宝鸡市植烟土壤养分状况分析

目的]研究陕西省宝鸡市植烟土壤养分状况。方法]以宝鸡烟区主产烟县2015年184个土壤样品与2012年207个土壤样品主要养分指标为基础数据,并进行了对比分析。结果]交换性镁、氯离子总体处于适宜或较高水平;有机质含量有增加的趋势,但近60.00%的样品有机质含量仍偏低;有效磷、速效钾含量适宜的比例有显著提升;p H有降低的趋势,总体改善明显;66.30%碱解氮含量偏高;80.00%有效锌在低和严重偏低的范围。结论]该研究为提高宝鸡烤烟产质量提供了科学依据。

The Condition Analysiso f Tobacco-planting Soil Nutrient in Baoji City

Objective] To study nutrient situation of tobacco-planting soil in Baoji City of Shaanxi Province.Method] The main nutrient in-dexes of 207 and 184 soil samples were analyzed to investigate variation of soil fertility between 2012 and 2015 in main tobacco-growing coun-ties of Baoji. Result]Available magnesium and chloride ion of soil were both at appropriate or higher level in all samples .Though organic matter of soil showed an increasing trend, nearly 60.00% of the organic matter content in soil samples was still on the low level.The propor-tions of available phosphorus and available potassium of soil at suitable level for tobacco growth had significant increase , while pH had decli-ning trend, and its overall improvement was obvious.66.30% of samples had higher alkali-hydrolyzable nitrogen, and 80.00% of available zinc in samples was at low and seriously low range . Conclusion] The research could provide scientific basis for improving yield and quality of tobacco in Baoji City.