浙江农业学报 ›› 2021, Vol. 33 ›› Issue (7): 1275-1282.DOI: 10.3969/j.issn.1004-1524.2021.07.13

• 环境科学 • 上一篇    下一篇

土壤调理剂施用对植烟酸化土壤pH值和烤烟根系特性的影响

陈闺1(), 周杰文2, 李海平3, 张发明3, 李春顺4, 柳立5, 张毅2,*()   

  1. 1.湖南农业大学 资源环境学院,湖南 长沙 410128
    2.湖南农业大学 生物科学技术学院,湖南 长沙 410128
    3.云南省烟草公司保山市公司,云南 保山 678000
    4.江苏中烟工业有限责任公司,江苏 南京 210011
    5.湖南农业大学 农学院,湖南 长沙 410128
  • 收稿日期:2020-12-02 出版日期:2021-07-25 发布日期:2021-08-06
  • 通讯作者: 张毅
  • 作者简介:*张毅,E-mail: zyi1219@163.com
    陈闺(1995—),女,湖南常宁人,硕士,主要从事农业生态工程与技术研究。E-mail: 1030219063@qq.com
  • 基金资助:
    中国烟草总公司云南省公司项目(2018530000242017);江苏中烟工业有限责任公司项目

Effects of soil conditioner application on pH value of acidified soil and root characteristics of flue-cured tobacco

CHEN Gui1(), ZHOU Jiewen2, LI Haiping3, ZHANG Faming3, LI Chunshun4, LIU Li5, ZHANG Y2,*()   

  1. 1. College of Resources & Environment, Hunan Agricultural University,Changsha 410128, China
    2. College of Bioscience and Technology, Hunan Agricultural University, Changsha 410128, China
    3. Baoshan City Branch of Yunnan Tobacco Company, Baoshan 678000, China
    4. Jiangsu China Tobacco Industry Co., Ltd., Nanjing 210011, China
    5. College of Agronomy, Hunan Agricultural University,Changsha 410128, China
  • Received:2020-12-02 Online:2021-07-25 Published:2021-08-06
  • Contact: ZHANG Y

摘要:

为明确植烟酸化土壤施用调理剂后土壤pH值的动态变化,及其对烤烟根系特性的影响,以云南省保山市昌宁县、腾冲市的植烟酸化土壤为研究对象,采用盆栽试验,研究了石灰、木本泥炭基腐殖酸钾(腐殖酸钾)+水热法矿物钾肥(矿物钾肥)、腐殖酸钾+钙镁磷肥3种土壤调理剂组合,及硫酸钾施用对土壤pH值和烤烟根系特性的影响。结果表明:添加腐殖酸钾+矿物钾肥、腐殖酸钾+钙镁磷肥后60 d内,土壤pH值表现为先下降后逐步回升的趋势;短期内施用石灰对提高土壤pH值的效果最好,但长期来看有复酸风险。施用腐殖酸钾+矿物钾肥、腐殖酸钾+钙镁磷肥可显著(P<0.05)提高根际土壤有机酸含量、烤烟根系活力、根系ATP酶活性与地上部干物质量。在腾冲市供试土壤上,施用腐殖酸钾+矿物钾肥、腐殖酸钾+钙镁磷肥处理的烟株根系生物量较空白对照分别显著(P<0.05)增加46.09%、83.70%。结果表明,腐殖酸钾+矿物钾肥或腐殖酸钾+钙镁磷肥的土壤调理剂组合,能够减缓植烟酸化土壤继续酸化,且有利于烟株的生长发育。

关键词: 酸化土壤, 土壤调理剂, 烤烟, 根系,

Abstract:

To clarify the dynamic variations of soil pH value and the effect on the root characteristics of flue-cured tobacco of soil conditioner application in acidified tobacco-planting soil, a pot experiment was conducted with soils of Changning County and Tengchong City, Baoshan City, Yunnan Province. The used soil conditioners consisted of lime, woody peat-based potassium humate (potassium humate for short)+hydrothermal mineral potassium fertilizer (mineral potassium fertilizer for short), potassium humate+calcium magnesium phosphate fertilizer. Also, potassium sulfate was used as one treatment besides the blank control (CK). The results showed that the soil pH value presented a trend of decreasing first and then gradually increasing after the addition of potassium humate+mineral potassium fertilizer and potassium humate+calcium magnesium phosphate fertilizer within 60 d. Lime application increased soil pH in a short time, yet it tended to become more acid for the long run. The application of potassium humate+mineral potassium fertilizer and potassium humate+calcium magnesium phosphate fertilizer significantly (P<0.05) increased the rhizosphere organic acid content, root activity, root ATPase activity and above-ground biomass of tobacco. In the soil of Tengchong City, compared with CK, root biomass was significantly (P<0.05) increased by 46.09% and 83.70%, respectively, after applying potassium humate+mineral potassium fertilizer and potassium humate+calcium magnesium phosphate fertilizer.In general, the application of potassium humate+mineral potassium fertilizer and potassium humate+calcium magnesium phosphate fertilizer could slow down the acidification of the acidified tobacco-planting soil, which is also beneficial for the growth and development of tobacco plants.

Key words: acidified soil, soil conditioner, tobacco, root, potassium

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