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[Effects of Controlled-release Blended Fertilizer on Crop Yield and Greenhouse Gas Emissions in Wheat-maize Rotation System].
Gao, Wei; Wang, Xue-Xia; Xie, Jian-Zhi; Chen, Yan-Hua; Ni, Xiao-Hui; Wang, Jia-Chen; Dong, Yan-Fang; Li, Zi-Shuang; Cao, Bing.
Afiliación
  • Gao W; Institute of Plant Nutrition, Resource and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China.
  • Wang XX; College of Resources & Environmental Sciences, Hebei Agricultural University, Baoding 071000, China.
  • Xie JZ; Beijing Engineering Technology Research Center for Slow, Controlled-Release Fertilizer, Beijing 100097, China.
  • Chen YH; Institute of Plant Nutrition, Resource and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China.
  • Ni XH; Beijing Engineering Technology Research Center for Slow, Controlled-Release Fertilizer, Beijing 100097, China.
  • Wang JC; College of Resources & Environmental Sciences, Hebei Agricultural University, Baoding 071000, China.
  • Dong YF; Institute of Plant Nutrition, Resource and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China.
  • Li ZS; Beijing Engineering Technology Research Center for Slow, Controlled-Release Fertilizer, Beijing 100097, China.
  • Cao B; Institute of Plant Nutrition, Resource and Environment, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China.
Huan Jing Ke Xue ; 45(5): 2891-2904, 2024 May 08.
Article en Zh | MEDLINE | ID: mdl-38629551
ABSTRACT
The increasing use of nitrogen fertilizers exerts extreme pressure on the environment (e.g., greenhouse gas emissions, GHGs) for winter wheat-summer maize rotation systems in the North China Plain. The application of controlled-release fertilizers is considered as an effective measure to improve crop yield and nitrogen fertilizer utilization efficiency. To explore the impact of one-time fertilization of controlled-release blended fertilizer on crop yield and GHGs of a wheat-maize rotation system, field experiments were carried out in Dezhou Modern Agricultural Science and Technology Park from 2020 to 2022. Five treatments were established for both winter wheat and summer maize, including no nitrogen control (CK), farmers' conventional nitrogen application (FFP), optimized nitrogen application (OPT), CRU1 (the blending ratio of coated urea and traditional urea on winter wheat and summer maize was 55 and 37, respectively), and CRU2 (the blending ratio of coated urea and traditional urea on winter wheat and summer maize was 73 and 55, respectively). The differences in yield, nitrogen fertilizer utilization efficiency, fertilization economic benefits, and GHGs among different treatments were compared and analyzed. The results showed that nitrogen application significantly increased the single season and annual crop yields of the wheat-maize rotation system (P < 0.05). Compared with those of FFP, the CRU1 and CRU2 treatments increased the yields of summer maize by 0.4% to 5.6%, winter wheat by -5.4% to 4.1%, and annual yields by -1.1% to 3.9% (P > 0.05). N recovery efficiency (NRE), N agronomic efficiency (NAE), and N partial factor productivity (NPFP) were increased by -8.6%-43.4%, 2.05-6.24 kg·kg-1, and 4.24-10.13 kg·kg-1, respectively. Annual net income increased by 0.2% to 6.3%. Nitrogen application significantly increased the annual emissions of soil N2O and CO2 in the rotation system (P < 0.05) but had no effect on the annual emissions of CH4 (except for in the FFP treatment in the first year). The annual total N2O emissions under the CRU1 and CRU2 treatments were significantly reduced by 23.4% to 30.2% compared to those under the FFP treatment (P < 0.05). Additionally, nitrogen application significantly increased the annual global warming potential (GWP) of the rotation system (P < 0.05), but the intensity of greenhouse gas emissions was reduced due to the increase in crop yields. Compared with that under FFP, the annual GWP under the CRU1 and CRU2 treatments decreased by 9.6% to 11.5% (P < 0.05), and the annual GHGs decreased by 11.2% to 13.8% (P > 0.05). In summary, the one-time application of controlled-release blended fertilizer had a positive role in improving crop yield and economic benefits, reducing nitrogen fertilizer input and labor costs, and GHGs, which is an effective nitrogen fertilizer management measure to promote cleaner production of food crops in the North China Plain.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gases de Efecto Invernadero País/Región como asunto: Asia Idioma: Zh Revista: Huan Jing Ke Xue Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gases de Efecto Invernadero País/Región como asunto: Asia Idioma: Zh Revista: Huan Jing Ke Xue Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China