添加石灰对西南喀斯特地区富硒土壤硒的赋存形态及高粱硒积累的影响

doi:10.14088/j.cnki.issn0439-8114.2026.02.009

湖北农业科学 ›› 2026, Vol. 65 ›› Issue (2): 57-62.doi: 10.14088/j.cnki.issn0439-8114.2026.02.009

添加石灰对西南喀斯特地区富硒土壤硒的赋存形态及高粱硒积累的影响

郭双燕, 游茜, 舒汶, 张君臣, 张南, 潘昌滨, 潘自平

茅台学院资源与环境学院,贵州仁怀 564500

收稿日期:2025-11-03 出版日期:2026-03-04 发布日期:2026-03-04
通讯作者: 潘自平（1969-）,男（侗族）,贵州铜仁人,教授,博士,主要从事土壤环境地球化学研究,（电子信箱）344283078@qq.com。
作者简介:郭双燕（2002-）,女,贵州习水人,在读本科生,专业方向为富硒土地资源利用,（电子信箱）2104044173@qq.com。
基金资助:
茅台学院大学生创新创业训练计划项目（S2024146251780; S2024146251788）; 茅台学院高层次人才科研启动经费项目（mygccrc[2022]064; mygccrc[2022]070）

Effects of lime application on selenium speciation in selenium-rich soil and selenium accumulation in sorghum in the Southwest karst region

GUO Shuang-yan, YOU Qian, SHU Wen, ZHANG Jun-chen, ZHANG Nan, PAN Chang-bin, PAN Zi-ping

School of Resources and Environment, Moutai Institute, Renhuai 564500, Guizhou, China

Received:2025-11-03 Published:2026-03-04 Online:2026-03-04

摘要/Abstract

摘要： 针对西南喀斯特地区富硒土壤硒含量高,但生物有效性低的问题,采用盆栽试验,设置不添加石灰（CK）及5个石灰添加梯度（T1~T5,每9 kg土壤分别添加5、10、20、30、40 g石灰）处理,探究其对土壤pH、硒形态转化、硒有效性及高粱硒吸收积累的影响。结果表明,添加石灰能够提高土壤pH,促使有机结合态硒向水溶态硒、可交换态硒转化,提高土壤有效态硒含量。适量添加石灰明显提升了高粱根、子粒硒的积累水平,最大增幅分别达78.57%和67.19%。相关性分析表明,土壤有效态硒含量是影响高粱硒吸收的关键因素,与根、子粒硒含量均呈较强正相关。根硒含量与有机结合态硒含量呈较强负相关,而子粒硒含量与有机结合态硒含量相关性较弱。在供试酸性富硒土壤中,添加20~30 g石灰（以每9 kg土壤计）可有效提高硒的生物有效性,并促进作物硒积累,在实际应用时,可参考此用量范围,并结合土壤具体的酸性特征进行适应性调整。

关键词: 石灰, 富硒土壤, 硒的形态, 高粱硒积累, 西南喀斯特地区

Abstract: Aiming at the problem of high selenium content but low bioavailability in selenium-rich soil in the Southwest karst region, a pot experiment was conducted with treatments of no lime application (CK) and five lime application gradients (T1~T5, adding 5, 10, 20, 30, 40 g lime per 9 kg soil, respectively) to explore the effects on soil pH, selenium speciation transformation, selenium availability, and selenium uptake and accumulation in sorghum. The results showed that lime application increased soil pH, promoted the transformation of organically combined selenium to water-soluble selenium and exchangeable selenium, and increased the content of available selenium in soil. Appropriate lime application significantly enhanced the accumulation levels of selenium in sorghum roots and grains, with the maximum increase reaching 78.57% and 67.19%, respectively. Correlation analysis indicated that the content of available selenium in soil was a key factor affecting selenium uptake in sorghum, showing a strong positive correlation with selenium content in roots and grains. The selenium content in roots had a strong negative correlation with the content of organically combined selenium, while the selenium content in grains had a weak correlation with organically combined selenium. In the tested acidic selenium-rich soil, applying 20~30 g lime (per 9 kg soil) effectively improved the bioavailability of selenium and promoted selenium accumulation in crops, and in practical application, this dosage range could be referred to with adaptive adjustments based on the specific acidic characteristics of the soil.

Key words: lime, selenium-rich soil, selenium speciation, selenium accumulation in sorghum, Southwest karst region

中图分类号:

S511

郭双燕, 游茜, 舒汶, 张君臣, 张南, 潘昌滨, 潘自平. 添加石灰对西南喀斯特地区富硒土壤硒的赋存形态及高粱硒积累的影响[J]. 湖北农业科学, 2026, 65(2): 57-62.

GUO Shuang-yan, YOU Qian, SHU Wen, ZHANG Jun-chen, ZHANG Nan, PAN Chang-bin, PAN Zi-ping. Effects of lime application on selenium speciation in selenium-rich soil and selenium accumulation in sorghum in the Southwest karst region[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(2): 57-62.

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添加石灰对西南喀斯特地区富硒土壤硒的赋存形态及高粱硒积累的影响

Effects of lime application on selenium speciation in selenium-rich soil and selenium accumulation in sorghum in the Southwest karst region

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