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| Effects of attapulgite addition on fermentation temperature and nutrient content of organic fertilizer |
| Received:April 13, 2021 |
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| KeyWord:attapulgite;cattle manure compost;fermentation temperature;nutrient |
| Author Name | Affiliation | E-mail | | WANG Yuxuan | College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China | | | E Shengzhe | College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China
Institute of Soil, Fertilizer and Water-Saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China | eshengzhe@163.com | | YUAN Jinhua | Institute of Soil, Fertilizer and Water-Saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China | | | YAO Jiaxuan | College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China | | | WANG Shaoqi | Linze County Dingfengyuan Attapulgite High-tech Development Co., Ltd., Zhangye 734200, China | | | ZHAO Tianxin | College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China | |
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| Abstract: |
| To effectively utilize the advantageous adsorption properties of attapulgite, reduce carbon and nitrogen losses and stench gas emissions during the fermentation of organic fertilizer, four different additions of attapulgite(0, 5%, 10%, 15%) were set up in this study to discuss the effects of attapulgite additions on temperature, nutrient content and nutrient loss rate during the fermentation. The results showed that, compared with the non-supplemented control, adding attapulgite could reduce the maximum temperature of compost fermentation, prolong the duration of high temperature and reduce the rate of water loss in the compost; Adding 5% attapulgite significantly reduced the total nitrogen mass loss by approximately 10 percent points. However, when the amount of attapulgite was >10% the nitrogen mass loss increased. Overall, the addition of attapulgite significantly reduced the mass and content loss of organic matter, and the addition of attapulgite had a significantly negative correlation with the mass loss rate of organic matter. Furthermore, the addition of attapulgite increased the potassium content of organic fertilizer, but had no significant effect on the phosphorus content. Therefore, the suitable amount of attapulgite in the organic fertilizer production process is 5%~10% of the total mass of the material. |
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