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| Effects of formulated fertilizer pattern on rice production, economic and environmental benefits |
| Received:April 20, 2021 |
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| KeyWord:formulated fertilization;rice;use efficiency;nitrogen and phosphorus loss;planting profit |
| Author Name | Affiliation | E-mail | | HAN Xuemei | Wuzhong District Agricultural Environment and Soil Fertilizer Station, Suzhou 215104, China | | | YANG Linzhang | Key Laboratory of Agricultural Environment of the Lower Reaches of the Yangtze River, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | | | YU Yingliang | Key Laboratory of Agricultural Environment of the Lower Reaches of the Yangtze River, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | yu.colleen@gmail.com | | XU Hongyan | Wuzhong District Yuexi Street Economic Service Center, Suzhou 215104, China | | | ZHU Xiuhong | Wuzhong District Agricultural Technical Advice Station, Suzhou 215104, China | | | YANG Bei | Key Laboratory of Agricultural Environment of the Lower Reaches of the Yangtze River, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | | | CHENG Hao | Nanjing Wondux Environmental Protection Technology Co., Ltd, Nanjing 211122, China | |
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| Abstract: |
| The Wuzhong District in Suzhou City is a key region that requires the control of agricultural non-point source pollution. The formulated fertilizer pattern established from soil testing is the main pathway to reduce the fertilizer input required for planting in this region. The aim of the formulated fertilizer pattern was to improve or maintain a high yield, as opposed to being informed by a comprehensive consideration of including agricultural production, economic profit, and environmental protection. Based on the present formulated fertilizer pattern used in rice cultivation over the last 4 years, a field experiment was carried out using the formulated fertilizer and implementing traditional fertilizer patterns for the different nutrient elements that were lacking in the soil. Economic and environmental benefits analysis was undertaken on the nutrient use efficiencies of rice, nitrogen and phosphorus loss from field, and the cost of production. The results showed that the formulated fertilizer pattern was able to maintain rice yield with a lower nutrient input compared to the traditional fertilizer pattern. This meant that the cost of fertilizer was 35% lower, increasing profits by 2 558 yuan·hm-2. Higher (6.35~28.59 percentage points) phosphorous and potassium use efficiencies and lower(36%) nitrogen runoff loss was also observed in the formulated fertilizer pattern. Based on the nutrient use efficiencies, there was still space to further reduce fertilizer input; organic fertilizers should be used to replace a portion of the chemical fertilizer usage. The formulated fertilizer pattern was updated every 4~5 years to maintain mass balance during agricultural production. A properly formulated fertilizer pattern would be conducive to an environmentally friendly agricultural practice. |
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