环秦岭区域植烟土壤养分状况及其与烟叶品质的关系

发布时间：2018-02-28 06:05

本文关键词： 环秦岭区域土壤养分烟叶化学成分物理特性　出处：《烟草科技》2016年10期 　论文类型：期刊论文

【摘要】：为明确环秦岭区域植烟土壤养分状况及其与烟叶品质的关系,采用描述性统计和简单相关分析的方法,研究了该区域土壤养分的状况并分析了土壤养分与中部烟叶化学成分及物理特性的相关性。结果表明:(1)环秦岭区域大部分植烟土壤为弱酸性-中性土壤,养分状况为土壤有机质和碱解氮整体偏低,速效磷、钾供应丰富。(2)根据土壤pH和养分特征,可将9个植烟县分为4类,宁强县、南郑县和平利县各自成为一类,其余植烟县归为一类。宁强县pH低,总体肥力水平高;南郑县和平利县pH较低,土壤肥力中等,磷含量较高,而南郑县钾含量高,平利县钾含量低;其余植烟县pH适中,土壤肥力较低,磷和钾含量均较高。(3)土壤有机质与烟叶叶面密度、单叶质量呈显著负相关,与烟叶总糖、氮碱比呈极显著正相关,与糖碱比呈显著正相关;碱解氮与两糖比呈极显著负相关,与总糖、氮碱比呈显著性正相关;其余养分指标与烟叶化学成分、物理特性的相关性较小。因此,在环秦岭区域烟叶生产中需要注意氮肥和有机肥的施用,通过肥料的合理施用来改善烟叶物理特性和化学成分的协调性。
[Abstract]:In order to clarify the nutrient status of tobacco planting soil and its relationship with tobacco leaf quality in Qinling region, descriptive statistics and simple correlation analysis were used. The status of soil nutrients in this region was studied and the correlation between soil nutrients and chemical composition and physical properties of tobacco leaves in the middle part of the region was analyzed. The results showed that most of the tobacco planting soils around Qinling Mountains were weakly acidic and neutral. According to soil pH and nutrient characteristics, nine tobacco planting counties can be divided into four categories, Ningqiang County, Nanzheng County and Pingli County respectively. The rest of tobacco planting counties fall into one category. Ningqiang County has low pH and high overall fertility level; Nanzheng County and Pingli County have lower pH, soil fertility is medium, phosphorus content is higher, while Nanzheng County has high potassium content, and Pingli County has low potassium content; other tobacco planting counties have moderate pH. Soil organic matter was negatively correlated with leaf density and single leaf mass, and positively correlated with total sugar, nitrogen and alkali ratio and ratio of sugar to alkali. There was a significant negative correlation between alkali-hydrolyzed nitrogen and disaccharide ratio, a significant positive correlation with total sugar and nitrogen-alkali ratio, and a little correlation between other nutrient indexes and chemical composition and physical properties of tobacco leaves. It is necessary to pay attention to the application of nitrogen fertilizer and organic fertilizer in the production of tobacco leaf around Qinling Mountains, and to improve the coordination of physical characteristics and chemical composition of tobacco leaf by the rational application of fertilizer.
【作者单位】：中国烟草总公司郑州烟草研究院;陕西省烟草公司;
【基金】：中国烟草总公司陕西省公司科技项目“环秦岭生态优质烟叶研究与开发”(D2014010)
【分类号】：S572;S158

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