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| Effects of different slow and controlled-release fertilizer formulations on rice yield，ammonia volatilization and greenhouse gas emissions |
| Received:February 23, 2025 |
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| KeyWord:soil textures;slow/controlled-release fertilizers;rice yield;ammonia volatilization;greenhouse gas |
| Author Name | Affiliation | E-mail | | CUI Maoya | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | LIU Shuli | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | LIU Jiatong | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | WEI Renyuan | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | LI Rongkai | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | SONG Penghua | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | DAI Qigen | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | | | CHEN Yinglong | Yangzhou University/Jiangsu Key Laboratory of Crop Cultivation Physiology/Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops/Academy of Rice Industry Engineering Technology, Yangzhou 225009, China | chenyinglong@yzu.edu.cn |
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| Abstract: |
| To explore the effects of one-time side deep application of different types of slow/controlled-release fertilizer formulations on rice yield, ammonia volatilization and greenhouse gas emissions. A field experiment was conducted using rice cultivar Nangeng5718 in two types of soil texture（sandy and clay soil）, and set up a conventional fertilization as control（CK）and four slow/controlled-release fertilizer formulations：sulfur-coated slow-release blended urea（T1）, resin-coated controlled-release urea Ⅰ + ordinary urea（T2）, resin-coated controlled-release urea Ⅱ（T3）, resin-coated controlled-release urea Ⅰ + ordinary urea + nitrification inhibitor（T4）. Results showed that rice yield was decreased in sandy and clay soils under T1 treatment compared with that of CK treatment, whereas T2-T4 treatments increased rice yield by 3.35%-18.33% and 2.40%-9.64%, respectively. Specifically, rice yield increased the most under T3 treatment, which increased by 18.33% and 9.64% in sandy and clay soils, respectively. Compared with T1 treatment, T2-T4 treatments reduced ammonia volatilization by 62.13% - 69.97% and 12.16% - 47.76% in sandy and clay soils, respectively. Among them, the addition of nitrification inhibitor treatment（T4）increased ammonia volatilization loss by 26.11% and 68.16% in sandy and clay soils, respectively, compared with the unadded treatment（T2）. The T2-T4 treatments reduced CH4 emissions by 17.09%- 45.60% and 0.99%- 31.24% in sandy and clay soils, respectively, compared with T1 treatment. Among them, the addition of nitrification inhibitor treatment（T4）was able to reduce CH4 and N2O emissions from paddy fields by 12.11% and 0.99% for CH4 and 51.87% and 42.50% for N2O in sandy and clay soils, respectively, compared to the unadded treatment（T2）. In summary, T2-T4 treatments were able to achieve flat or increased rice yields compared to CK treatment in both sandy and clay soils and showed significant advantages in reducing ammonia volatilization and greenhouse gas emissions from paddy fields compared to T1 treatment. T3 treatment applied in clay soils was able to increase rice yields and effectively reduce ammonia volatilization, CH4 and N2O emissions from paddy fields. |
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