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作物生育期内光合碳在地下部的分配及转化

金剑1,2;王光华1;刘晓冰1;张磊3;米亮1;刘俊杰1;Stephen J Herbert4   

  1. 1中国科学院东北地理与农业生态研究所黑土生态重点实验室, 哈尔滨 150081;2大豆生物学教育部重点实验室, 哈尔滨 150030;3青岛农业大学资源与环境学院, 山东青岛 266109;4Department of Plant and Soil Sciences, University of Massachusetts, Amherst 01003, MA, USA
  • 收稿日期:2007-10-28 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10

Allocation and transformation of photosynthetic carbon in belowground part of crops during their growth period: A review.

JIN Jian1,2;WANG Guang-hua1; LIU Xiao-bing1;ZHANG Lei3; MI Liang1; LIU Jun-jie1;Stephen J HERBERT4    

  1. 1Key Laboratory of Black Soil Ecology, Northeast Institute of Geography a
    nd Agroecology, Chinese Academy of Sciences, Harbin 150081, China; 2Key Laboratory of Soybean Biology of Ministry of Education, Harbin 150030, China; 3College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, Shandong, China;4Department of Plant and Soil Sciences, University of Massachusetts, Amherst 01003, MA, USA
  • Received:2007-10-28 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10

摘要: 光合碳是“大气-植物-土壤”系统碳循环的重要组成部分,也是土壤有机碳的重要来源。在农田生态系统中,作物生长期内光合碳在地下部的去向及代谢机理易被忽视,此方面的研究对于全面认识植物-土壤-微生物间的互作关系、农田土壤质量变化及全球碳循环规律却是必不可少的。本文综述了作物生育期内光合碳在地下部的动态分配、其对土壤有机碳的贡献及微生物在光合碳转化中的作用,总结了碳示踪技术;提出应加强在典型土壤类型上的光合碳研究,明确其对不同土壤有机碳组分贡献;重点开展大豆、玉米等作物光合碳在地下部动态分配研究;探讨根系分泌含碳化合物与微生物利用的关系;强调气候条件和农艺措施等综合因素对碳分配的影响。

Abstract: Photosynthetic carbon is an important component in the carbon cycling of atmosphere-plant-soil system, and the main source of soil organic carbon. In farmland ecosystems, the fate and metabolic mechanism of photosynthetic carbon in belowground part of crops during their growth period are usually ignored, but are indispensable for understanding the plant-soil-microbe interaction, change of soil quality, and global carbon cycling. In this paper, the allocation of photosynthetic carbon in belowground part of crops during their growth period, the contribution of this allocation to soil organic carbon, and the roles of soil microbes in the turnover of the photosynthetic carbon, as well as carbon-labeling technology, were reviewed. It was proposed that the study of photosynthetic carbon in typical soil types should be strengthened, and the contribution of photosynthetic carbon to different components of soil organic carbon should be defined, with the focuses on the allocation pattern of photosynthetic carbon in the belowground parts of soybean and maize, the relationships between the carbon compounds released from roots and their utilization by soil microbes, and the effects of climate factors and agronomic practices on the carbon allocation.

Key words: Peanut hull, Biosorption, Anionic dye, Amaranth, Sunset yellow, Fast green FCF