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| Effects of exogenous additives in cattle farm slurry on soil ammonia volatilization after application |
| Received:September 07, 2021 |
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| KeyWord:cattle farm slurry;additives;soil;ammonia volatilization |
| Author Name | Affiliation | E-mail | | LIU Muheng | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | WANG Guiyun | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | ZHANG Yandong | Agricultural and Rural Bureau of Xushui District, Baoding, Baoding 072550, China | | | DU Yanqin | Agricultural and Rural Bureau of Xushui District, Baoding, Baoding 072550, China | | | ZHAI Zhongwei | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | LIU Fuyuan | Institute of Animal Husbandry and Veterinary Medicine, Xinjiang Academy of Agricultural Sciences, Shihezi 832000, China | | | DU Huiying | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | duhuiying@caas.cn | | ZHANG Keqiang | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | |
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| Abstract: |
| In this study, the method of indoor cultivation was adopted to study the addition of different exogenous additives(humic acid, sulfuric acid, biochar, and citric acid)to the slurry of cattle farms. The boric acid absorption method was used to monitor the ammonia volatilization in the soil to determine the best slurry additives to reduce ammonia volatilization. The results showed that the addition of acidic exogenous additives to cattle farm slurry under alkaline soil conditions reduced the loss of ammonia in the soil. The inhibitory effect of acid additives on ammonia volatilization was in the order of citric acid > humic acid > sulfuric acid. The ammonia volatilization decreased by 46.62% and the total nitrogen content on the 14th day of culture in the humic acid treatment was higher than that of other treatments. High urease activity could promote the increase in ammonia volatilization and increase the soil nitrate nitrogen content. Studies have shown that adding humic acid as an exogenous additive in cattle farm slurry application to the field is beneficial to reduce the amount of soil ammonia volatilization, and plays an important role in protecting the soil ecological environment and improving soil fertility. |
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