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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (4): 50-54.doi: 10.11924/j.issn.1000-6850.2014-2477

所属专题： 烟草种植与生产

• 林学 园艺 园林 • 上一篇    下一篇

陇南植烟土壤交换性镁与烟叶中镁含量特征及关系分析

王雅妮1,2,梁洪波2,王树声2,林 琪1,陈爱国2,杨树勋3,夏 巍3,乔万鹏3,荣翔麟3,徐旭光2,4   

  1. (1青岛农业大学农学与植物保护学院,山东青岛 266101；2中国农业科学院烟草研究所/农业部烟草生物学与加工重点实验室/中国农业科学院青岛烟草资源与环境野外科学观测试验站,山东青岛 266101；3陇南市烟草公司,甘肃陇南 746000；4中国农业科学院研究生院,北京 100081）
  • 收稿日期:2014-09-11 修回日期:2014-11-05 接受日期:2014-12-03 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 王树声
  • 基金资助:
    甘肃省烟草专卖局2013年重点科研项目“甘肃陇南特色优质烟叶研究与开发”(QYYCKJ2013-001)。

The Characteristics and Relationship Between Magnesium Content in Flue-cured Tobacco Leaves and
Exchangeable Magnesium Content in Soil in Longnan

Wang Yani1,2, Liang Hongbo2, Wang Shusheng2, Lin Qi1, Chen Aiguo2, Yang Shuxun3, Xia Wei3, Qiao Wanpeng3, Rong Xianglin3, Xu Xuguang2,4   

  1. (1Agronomy and Plant Protection College, Qingdao Agricultural University, Qingdao Shandong 266101;2Tobacco Research Institute, CAAS/ Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture/Qingdao Tobacco Resources and Environment Field Station of CAAS, Qingdao Shandong 266101;3Tobacco Company in Longnan, Longnan Gansu 746000;4Graduate School of Chinese Academy of Agriculture Sciences, Beijing 100081)
  • Received:2014-09-11 Revised:2014-11-05 Accepted:2014-12-03 Online:2015-03-20 Published:2015-03-20

摘要： 为研究甘肃陇南地区植烟土壤中交换性镁和烤烟烟叶中镁的含量特征，在陇南烟区点对点采集土壤和烟叶样品进行检测和分析。结果表明：陇南地区植烟土壤交换性镁含量适中占72.4%，含量丰富占27.6%，总体处于适中~丰富水平，交换性镁含量空间分布趋势为由西北和东南部向中部逐渐增加；尽管土壤交换性镁含量丰富，但烟叶中镁含量不足，明显缺乏占2.74%，轻度缺镁占83.56%，在正常范围内仅占13.70%，总体含量偏低；烟叶中的镁与土壤交换性镁、有机质呈显著正相关，与交换性钙镁比呈极显著负相关。土壤中交换性钙镁比偏高，钙镁吸收的拮抗作用，可能为烟叶镁含量偏低的重要原因；采取平衡施肥技术，协调土壤中交换性钙镁比，适当增施有机肥以及追施镁肥是解决陇南烤烟烟叶含量偏低的重要途径。

关键词: 小麦叶枯病菌, 小麦叶枯病菌, 侵染过程, 寄主互作, 致病机理

Abstract: In order to understand the content of exchangeable Mg in soil and Mg in flue-cured tobacco leaves, the soil and tobacco samples were collected and studied by point to point approach in Longnan. The results showed that: the moderate exchangeable Mg in soil was reached to 72.4%, the abundant content was reached to 27.6%, the overall content ranged from moderate to abundant, and the exchangeable Mg content increased gradually from northwest and southeast to the middle. Despite the exchangeable Mg in soil was rich, Mg in tobacco leaves was insufficient, of all the tobacco leave samples, 2.74% of the samples lacked Mg significantly, 83.56% of them lacked Mg slightly, and only 13.70% of them had suitable Mg content, so the overall content was comparatively low. The Mg in tobacco leaves was significantly positive correlated to exchangeable Mg and organic matter, and was extremely significantly negative correlated to the ratio of exchangeable Ca to Mg. The higher ratio of exchangeable Ca to Mg, and the antagonism between exchangeable Ca and Mg might be an important reason of low Mg content in leaves. To balance fertilization, coordinate the ratio of exchangeable Ca and Mg, increase the application amount of organic fertilizer appropriately and have top dressing of Mg fertilizer are important ways to improve the Mg content in flue-cured tobacco leaves in Longnan.