期刊论文

中文

核农学报

1000-8551

2017

31

5

918-926

10.11869/j.issn.100-8551.2017.05.0918

云南省烟草公司项目（2014YN24） 红云红河烟草集团项目（HYHH2012YL03,HYHH2016YL03）

本校为第一机构

为了研究曲靖烤烟钾含量特征及其与主要生态因子的关系,在曲靖烟区采集烤烟样品3 506个,测定其钾含量,并采用决策树分析、回归分析等方法探究曲靖烤烟钾含量特征及其主要影响因素。结果表明,曲靖烟区烤烟钾含量平均为1. 65%,且变幅较大( 0. 35% ~ 3. 60%) ,有81. 86%的烟叶钾含量< 2. 0%,钾含量在县域间差异达极显著水平;此外,海拔高度、土壤质地、土壤类型、土壤有机质、土壤速效钾、土壤有效钙、土壤有效镁均影响烤烟钾含量。海拔高度对烤烟钾含量影响的拐点分别为1 689、 1 814和2 023m,且随海拔上升,烤烟钾含量下降;土壤质地粘性增加,烤烟钾含量随之增加;烤烟钾含量在不同土壤类型间差异达极...

In order to study the characteristics of potassium content of flue-cured tobacco in Qujing and its relationship with the main ecological factors,3 506 flue-cured tobacco samples were collected and their potassium content was measured,the potassium content of flue-cured tobacco in Qujing and its main influencing factors were studied by decision tree analysis and regression analysis. The results show that mean potassium content of flue-cured tobacco was 1. 65%with a amplitude of 0. 35 to 3. 60%,and potassium content were lower than 2% in 81. 86% ...