Selenium contents of rice and rhizosphere soil and threshold value of selenium-rich soil in Ganzhou of Jiangxi Province

ZHOU Mo; TANG Zhimin; ZHANG Ming; CHEN Guoguang; LIANG Xiaohong; ZHAN Long; ZHANG Jie; YONG Taijian

2021 Vol. 40, No. 4

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Article navigation > Geological Bulletin of China > 2021 > 40(4): 604-609

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ZHOU Mo, TANG Zhimin, ZHANG Ming, CHEN Guoguang, LIANG Xiaohong, ZHAN Long, ZHANG Jie, YONG Taijian. Selenium contents of rice and rhizosphere soil and threshold value of selenium-rich soil in Ganzhou of Jiangxi Province[J]. Geological Bulletin of China, 2021, 40(4): 604-609.

Citation:

ZHOU Mo, TANG Zhimin, ZHANG Ming, CHEN Guoguang, LIANG Xiaohong, ZHAN Long, ZHANG Jie, YONG Taijian. Selenium contents of rice and rhizosphere soil and threshold value of selenium-rich soil in Ganzhou of Jiangxi Province[J]. Geological Bulletin of China, 2021, 40(4): 604-609.

Selenium contents of rice and rhizosphere soil and threshold value of selenium-rich soil in Ganzhou of Jiangxi Province

Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China

Received Date: 10 August 2020

Revised Date: 19 October 2020

Publish Date: 15 April 2021

Abstract

Abstract

In our project, 954 groups of rice and root soil, the main crops of Ganzhou city, were taken as a research object to analyze the selenium contents of rice and rhizosphere, and to study the threshold value of selenium-rich soil in Ganzhou city.The results revealed that when the Se content of rhizosphere was ≥ 0.4 mg/kg, the overall selenium enrichment probability of rice seeds was 53.77%, and the selenium enrichment ratio of rice seeds was as high as 79.78%.However, a certain amount of selenium-rich rice also grew in the soil with sufficient selenium, potential deficient selenium and deficient selenium, which indicates that there were certain misjudgment and erroneou judgment in the division of the selenium-rich soil according to the threshold of 0.4 mg/kg.According to the comparison of Se enrichment rate of rice, when the standard lower limit of Se-rich soil in the rice growing area of Ganzhou City was 0.3 mg/kg, the average Se content in rice seeds was 0.073 mg/kg, and the Se enrichment rate in rice was 72.16%.This study is of great significance to the scientific utilization of selenium-rich soil resources and the development of selenium-rich rice industry in Ganzhou City.
- soil selenium /
- rice selenium /
- selenium enrichment standard /
- regression analysis

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References

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