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Journal of Agriculture ›› 2020, Vol. 10 ›› Issue (6): 46-51.doi: 10.11923/j.issn.2095-4050.cjas19040001

Special Issue: 土壤重金属污染 水稻

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Application Effects of SAMMNS Nanometer Material in Paddy Fields of Cd & Cu Composite Pollution

Fang Keming1,2, Xiao Xin3(), Ye Yiqun2, Zhong Guomin1, Zhu Anfan4, Zhou Lifang5, Wang Meiling6, Wang Fulin7, Hong Xuncheng8   

  1. 1 Soil and Fertilizer Station of Jingdezhen City, Jingdezhen 333000, Jiangxi, China
    2 Jingdezhen City Institute of Agricultural Sciences, Jingdezhen 333000, Jiangxi, China
    3 Jiangxi Forest Inventory and Planning Research Institute, Nanchang 330046, Jiangxi, China
    4 Soil and Fertilizer Technique Popularization Station of Jiangxi Province, Nanchang 330046, Jiangxi, China
    5 Agricultural Products Quality and Safety Testing Center of Shangrao City, Jiangxi Province, Shangrao 334000, Jiangxi, China
    6 Jingdezhen City, Demonstration Breeding Farm of Rice, Livestock and Poultry, Jingdezhen 333000, Jiangxi, China
    7 Fuliang Country, Jinggongqiao Town, Agricultural Technology Extension Comprehensive Service Station, Jingdezhen 333400, Jiangxi, China
    8 Fuliang Country, Jiangcun Township, Agricultural Technology Extension Comprehensive Service Station, Jingdezhen 333000, Jiangxi, China
  • Received:2019-04-01 Online:2020-06-20 Published:2020-07-09

Abstract:

SAMMNS is a kind of nanometer material used in the treatment of “three wastes” pollution control. To verify the application effects of SAMMNS nanometer material on heavy metal Cd contaminated paddy fields, field experiments with different amounts of SAMMNS nanometer material were carried out in paddy fields with composite pollution by Cd and Cu. The experiments showed that the application of chemical fertilizers could acidify the soil, reduce the amount of Cd and increase the amount of Cu in brown rice. Rice had a strong enrichment effect on Cd, but only general absorption on Cu. The results showed that the application of SAMMNS nanometer material could significantly increase the pH value of soil and effectively reduce the effective Cd content in soil and that in brown rice, and there was a positive correlation between the effective Cd content in soil and that in brown rice. Compared with blank control and fertilization control, the mean value of Cd in brown rice with 3000 kg/hm2 SAMMNS nanometer material decreased by 40.54% and 30.62%, respectively, and the difference of the treatment reached a significant level. The application of SAMMNS nanometer material also had a certain effect on reducing the amount of Cu in brown rice, but it is not as effective as reducing the amount of Cd in brown rice. The application of SAMMNS nanometer material has a small yield increase effect on rice.

Key words: SAMMNS, Nanometer Material, Paddy Fields of Cd & Cu Composite Pollution, Improvement Effect

CLC Number: