Different chemical activation of humic acid from weathered coal affect the growth and development of tomatoes and cabbages

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Sun, Qian^1,2 ; Xia, Liru^1,2 ; Yu, Gang^1,2 ; Chen, Xinxin^3 ; Lyu, Xiaoxiao^4 ; Zhou, Zhongkai^1,2 ; Li, Bin^5 ; Liu, Jianlong^1,2

Institute of Facilities and Equipment in Agriculture, Jiangsu Academy of Agricultural Science, Jiangsu

210014, China^1

Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and China, Jiangsu

210014, China^2

College of Engineering, Nanjing Agricultural University, Jiangsu

210031, China^3

Department of Soil and Water Science, Tropical Research and Education Center, University of Florida, Homestead

33031, United States^4

School of Engineering, Zhejiang A and F University, Zhejiang

311300, China^5

关键词: Alkaline solutions;    Available nutrients;    Crop productivity;    Extraction method;    Growth and development;    Nitric acid oxidation;    Organic oxidation;    Oxidation conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022137/pdf
DOI  :  10.1088/1755-1315/170/2/022137

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Different chemical activation of humic acid from weathered coal affect the growth of tomatoes and cabbage: Crop productivity is the basis of certain nutrients for human life which depends on amount of available nutrient in the soil. Humic acids (HA) are the major constituent of organic oxidation products and are formed on coal surface with various molecular weights for different oxidation conditions, and they are soluble in alkaline solutions but become insoluble in acidic solutions. HA activated coal is the new production of humic preparations to be used in the branch of agriculture in recent years. Two commonly used methods (Nitric acid oxidation method and Potassium hydroxide extraction method) were used to activate the weathered coal to find out the best method of making humic acid. We find that coals of Inner Mongolia and Shanxi after activation have more strong effect than raw materials.