Rhizosphere Processes and Management for Improving Nutrient Use Efficiency and Crop Productivity
High input, high output, low nutrient resource use efficiency and deteriorating environmental problems reflect the typical characteristics of intensive farming system in China. How to achieve synchronously high nutrient use efficiency as well as high crop productivity has become a great challenge in the intensive agriculture of China. In the past two decades, crop production has not proportionally been increased with increasing input of chemical fertilizers, leading to low nutrient use efficiency and increasing environmental problems. Traditional nutrient management strategy was highly dependent on external chemical fertilizer input, but ignored exploring biological potential of efficient acquisition and use of soil nutrient resources by plants intrinsically. Rhizosphere is the key centre of interactions among plants, soils and microorganisms; the chemical and biological processes occurring in the rhizosphere not only determine mobilization and acquisition of soil nutrients, but also control nutrient use efficiency by crops. The rhizosphere management strategy lays emphasis on maximizing the efficiency of root and rhizosphere processes in nutrient acquisition towards high-yield and highefficiency sustainable crop production by optimizing nutrient supply in root zone, regulating root morphological and physiological traits, and manipulating rhizosphere processes and interactions. The strategies of rhizosphere management are proved to be an effective approach to increasing nutrient use efficiency and crop productivity towards sustainable crop production for main crops in China.
Rhizosphere management Soil nutrients Nutrient use efficiency Crop productivity Root ezudation Rhizosphere processes
Fusuo Zhang Jianbo Shen Jingying Jing Long Li Xinping Chen
College of Resource and Environmental Sciences,China Agricultural University,Beijing 100193,China
国际会议
杭州
英文
52-54
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）