云南省文山州烟田土壤主要肥力指标多年度动态变化
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S158.2

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中国烟草总公司云南省公司科技计划项目(2020530000241030,2020530000242021)资助。


Multi-year Changes of Main Soil Fertility Indexes of Tobacco-planting Fields in Wenshan Prefecture of Yunnan Province
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    摘要:

    2005-2020年期间采集了云南省文山州5 176个烟田土壤样品,测定分析了其pH及有机质(SOM)、碱解氮(AN)、有效磷(AP)和速效钾(AK)含量,以及各级别分配比例及其年度变化情况。结果表明:2005-2020年期间,研究区土壤pH及SOM、AN、AP含量平均分别为6.40、25.65 g/kg、102.25 mg/kg、18.84 mg/kg,均为植烟适宜水平;但AK含量平均为164.33 mg/kg,为偏高水平。AK含量随年份呈现显著的升高趋势(y=96.13e0.0615xR2=0.847 6**P<0.01),但其他指标的变化趋势较为复杂。pH、SOM和AN含量以适宜级别的烟田土壤比例最高,平均分别为50.02%、65.17%和54.15%;AP和AK含量适宜级别与偏高级别的烟田土壤比例相当,AP分别为46.98%和40.49%,AK分别为46.03%和45.50%。pH和AK含量适宜级别的烟田土壤比例随年份呈现显著降低趋势(pH:y=1027e-0.029xR2=0.609 3**P<0.01;AK:y=0.0519x2-211.66x+215872,R2=0.886 2**P<0.01),SOM、AN和AP含量适宜级别的烟田土壤比例总体上随年份呈现升高的趋势,但未达到显著水平(P>0.05)。2020年文山州尚有25.84%和33.50%的烟田土壤pH偏低和偏高,7.76%和7.87%、34.42%和42.9%的烟田土壤AN和AP含量偏低、偏高,绝大部分烟田(73.34%) AK含量偏高,针对上述问题,需要采取不同的措施以提升烟田烤烟种植的适宜性。

    Abstract:

    In this study, the topsoil samples of 5 176 in total tobacco-planting fields in Wenshan Prefecture of Yunnan Province were collected annually from 2005 to 2020, and soil pH values, the contents of organic matter (SOM), alkali-hydrolyzed nitrogen (AN), available phosphorus (AP) and rapidly available potassium (AK) were determined, and then their contents, grade proportions and annual changes were analyzed. The results showed that the average pH, SOM, AN and AP were 6.40, 25.65 g/kg, 102.25 mg/kg and 18.84 mg/kg, respectively, which were all belonged to the suitable grades for tobacco-planting, while the average AK was 164.33 mg/kg, which was belonged to the high grade for tobacco-planting. AK was increased significantly with year (y = 96.13e0.0615x, R2 = 0.847 6**, P<0.01), however, pH, SOM, AN and AP changed irregularly or complex. The sample proportions were the highest in suitable grades for pH, SOM and AN, which meanly were 50.02%, 65.17% and 54.15%, respectively. The sample proportions were roughly similar between the suitable grades and high grades for AP and AK, which were 46.98% and 40.49% for AP, and 46.03% and 45.50% for AK, respectively. The sample proportions of the suitable grades of pH and AK were decreased significantly with year (pH: y= 1027e-0.029x, R2 = 0.609 3**, P<0.01; AK: y = 0.0519x2-211.66x + 215872, R2 = 0.886 2**, P<0.01), the sample proportions of the suitable grades of SOM, AN and AP were insignificantly increased with the year (P>0.05). For tobacco planting, there were 25.84% and 33.50% of tobacco-planting fields in 2020 in Wenshan Prefecture were low or high in soil pH, 7.76% and 7.87%, 34.42% and 42.9% of tobacco-planting fields were low or high in AN and AK, while most of the tobacco-planting fields (73.34%) were high in AK. In view of the above problems, different measures should be taken in order to improve the soil suitability of tobacco-planting.

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胡加云,朱艳梅,徐天养,殷红慧,张传树,李纯,冯再兴,李鹏飞.云南省文山州烟田土壤主要肥力指标多年度动态变化[J].土壤,2022,54(1):95-102. HU Jiayun, ZHU Yanmei, XU Tianyang, YIN Honghui, ZHANG Chuanshu, LI Chun, FENG Zaixing, LI Pengfei. Multi-year Changes of Main Soil Fertility Indexes of Tobacco-planting Fields in Wenshan Prefecture of Yunnan Province[J]. Soils,2022,54(1):95-102

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  • 收稿日期:2021-04-12
  • 最后修改日期:2021-05-18
  • 录用日期:2021-05-19
  • 在线发布日期: 2022-02-11
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