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| Response of soil phosphorus availability to long-term application of organic fertilizer under maize cropping system:A meta-analysis |
| Received:January 06, 2022 |
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| KeyWord:soil available phosphorus;phosphorus application rate;organic fertilizer;soil factor;meta-analysis |
| Author Name | Affiliation | E-mail | | LÜ Chunling | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China | | | CHEN Yanhua | Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China | | | HE Wentian | Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China | | | ZHANG Siyu | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | JIANG Na | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | FAN Daijia | Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China | | | YANG Huawei | College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China | | | YANG Dianlin | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | yangdianlin@caas.cn | | ZOU Guoyuan | Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China | gyzou@163.com |
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| Abstract: |
| The long-term application of organic fertilizers can improve soil available phosphorus(P) content, but there exist large differences between studies. Through the integration analysis of a large amount of experimental data based on the types of organic fertilizer, application amount, organic fertilizer replacement ratio, and soil factors, the response of soil P availability under different factors to the long-term application of organic fertilizer has important significance for guiding the scientific fertilization of organic fertilizer. In this study, 147 published papers, which contained 305 datasets of soil available P content, were used to establish a database for the application of chemical fertilizer(CF)and the combined application of chemical and organic fertilizers(CFM). The differences in soil available P content under CF and CFM treatments from numerous long-term field experimental sites around China and the driving factors were analyzed based on a meta-analysis. The results showed that the CFM treatment significantly increased the content of soil available P and the increased soil available P content per 100 kg·hm-2. P input was approximately 2.6 times that of the CF treatment. The increased rate of soil available P at high P application rate(> 300 kg·hm-2)was approximately 3.5 times and 2.3~2.6 times higher than that at low P application rate(< 75 kg· hm-2)and medium P application rate(75~150 kg·hm-2 and 150~300 kg·hm-2). The order of the impact of different organic fertilizers on soil available P content was animal manure > commercial organic fertilizer > straw > municipal waste. Among animal manure, pig, cow, and chicken manure exerted a significant effect on the soil available P content, increasing by 210.4%, 209.3%, and 156.7%, respectively. The elevation in the available soil P increased with increasing organic fertilizer, peaking at 239.7% and 211.7% when the proportion of organic fertilizer reached 100% and 75%, respectively. Soil properties(soil type, organic matter content, and pH)were the main factors affecting the soil available P content when applying organic fertilizer. Under different soil types, the increase in available P ranged from 12.7% to 212.1%, displaying the following pattern:red soil > fluvo-aquic soil > cinnamon soil > black soil > brown soil. When soil organic matter content ranged from 0.6% to 1%, the increase in soil available P content increased and peaked at 248.5%, which was 2.1, 2.0, and 10.9 times of that when the soil organic matter content was less than 0.6%, 1%~2%, and 2%~3%, respectively. When the pH was acidic(5~6.5) or neutral(6.5~7.5), the effect of organic fertilizer on soil available P was significantly higher than that pH was alkaline(7.5~9.0). In addition, the increase in soil available P content increased with high annual mean precipitation and temperature and reached the highest level when either the annual mean precipitation was >800 mm or the annual mean temperature >16℃. Under long-term fertilization conditions, factors such as types of organic fertilizer, application amount, and organic fertilizer replacement ratio exerted significant effects on soil available P content. In addition, the effect of organic fertilizer application on soil available P was significantly different under different soil environments, rotation systems, and climatic factors. Therefore, in the process of agricultural production, the scientific application of organic fertilizer should not only fully consider the types of organic fertilizer, application amount, and organic fertilizer replacement ratio, but also comprehensively consider the impact of environmental factors. This study has great significance for the scientific use of organic waste resources to avoid resource waste and environmental pollution and to promote the green, high-quality, and sustainable development of agriculture. |
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