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[Spatial-temporal variations of spring maize potential yields in a changing climate in Northeast China.] / 气候变化背景下东北三省春玉米产量潜力的时空特征.
Liu, Zhi Juan; Yang, Xiao Guang; Lyu, Shuo; Wang, Jing; Lin, Xiao Mao.
Afiliación
  • Liu ZJ; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Yang XG; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Lyu S; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Wang J; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Lin XM; Ningxia Institute of Meteorological Sciences, Yinchuan 750002, China.
Ying Yong Sheng Tai Xue Bao ; 29(1): 103-112, 2018 Jan.
Article en Zh | MEDLINE | ID: mdl-29692018
Based on meteorological data, agro-meteorological observations, and agricultural statistical data in Northeast China (NEC), by using the validated Agricultural Production System sIMulator (APSIM-maize), the potential, attainable, potential farmers' and actual farmers' yields of spring maize during the period 1961 to 2015 were analyzed, and the effects of climate variation on maize potential yield in NEC were quantified. Results indicated that the potential yield of spring maize was 12.2 t·hm-2 during the period 1961 to 2015, with those in northeast being lower than southwest within the study region. The attainable yield of spring maize was 11.3 t·hm-2, and showed a similar spatial distribution with potential yield. Under the current farmers' management practices, mean simulated potential and actual farmers' yields were 6.5 and 4.5 t·hm-2, respectively. Assuming there were no changes in cultivars and management practices in NEC, the mean potential, attainable, and potential farmers' yields of spring maize would decrease by 0.34, 0.25 and 0.10 t·hm-2 per decade in NEC. However, the actual farmers' yields increased with the value of 1.27 t·hm-2 per decade averaged over NEC. Due to climate variation, year-to-year variations of spring maize potential, attainable, and potential farmers' yields were significant, ranging from 10.0 to 14.4, 9.8 to 13.3, 4.4 to 8.5 t·hm-2, respectively.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Zea mays País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Zea mays País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: China