文献类型： 会议论文

第一作者： Raj K. Gupta

作者： Raj K. Gupta ¹ ; Ram K. Naresh ² ; Peter R. Hobbs ³ ; Zheng Jiaguo ⁴ ; Jagdish K. Ladha ⁵ ;

作者机构： 1.Rice-Wheat Consortium for Indo-Gangetic Plains New Delhi, India

2.Sardar Vallab Bhai Patel University of Agriculture & Technology Meerut, India

3.International Maize and Wheat Improvement Center Kathmandu, Nepal

4.Sichuan Academy of Agricultural SciencesChengdu, China

5.International Rice Research Institute Manila, Philippines

会议名称： International Symposium of the Soil Science Society of America

主办单位：

页码： 1-25

摘要： Agricultural policy in the 1960s and 1970s focused on food security through increased coverage of high-yielding varieties. This enabled rice (Oryza sativa L.)-wheat (Triticum aes-tivum L. and T. durum Desf.) to emerge as a major cropping system in theIndo-Gangetic Plains (IGP), ushering in the Green Revolution (GR). The GR technologies have remained the cornerstone of the South Asian strategy for food security, rural development, conservation of natural resources, and poverty alleviation. Evidence is now appearing that indicates the rice-wheat system has fatigued the natural resource base. Agriculture is now in need of an infusion of technologies to tap new sources of productivity growth. On the basis of driving variables for agricultural development, the IGP has been delineated into five relatively homogeneous transects to address location-specific rice-wheat system ecology problems. The integration of crop improvement; water management; nutrient management; weed, disease, and pest management; and policy and social science research in relation to crop establishment within these transects allows sustained production, diversification, and enhanced system productivity. This chapter describes various options available to farmers for crop establishment and diversification in rice-wheat system ecology and the relative potential of improved technologies across the IGP. We highlight new strategies and draw upon some Chinese agrotechniques relevant to the rice-wheat system of the IGP.

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