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1001 Evaluation of Key Factors of SRI Method

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Presenter: Lin Xianqing, CNRRI …

Presenter: Lin Xianqing, CNRRI

Workshop on the System of Rice Intensification, Exchanging Experience in
China, the Democratic People's Republic of Korea and Internationally, organized and
hosted by the China National Rice Research Institute (CNRRI), with support from The
Asia Foundation.

Hangzhou, China, February 28-March 2, 2010

Published in: Technology

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  • Sorry, The photograph of CK and SRI in slide 31 are the same. Difference in resolution only. Bluffed?

    from Dr. P. K. Deb Choudhury
    pk.debchodhury@gmail.com
       Reply 
    Are you sure you want to  Yes  No
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  • 1. Workshop on SRI rice technology
    Evaluation of Key Factors of SRI Method
    Dr. Lin Xianqing
    E-mail: xqlin2003@163.com
    China National Rice Research Institute
  • 2. Reporting Content:
    Ⅰ. Seedlings
    Ⅱ. Spacing
    Ⅲ. Organic fertilizer
    Ⅳ. Water management
    Ⅴ. Comparison between SRI and traditional method
    Ⅵ. Operation of SRI
  • 3. 1. Seedlings
  • 4. 1. Tillering
  • 5. 2. Yield (Site:Xiage town)
  • 6. Yield (Site:Baite town)
  • 7. Ⅱ. Spacing
  • 8. 1. Tillering
    A: 195,000 hills/ha
    C: 135,000 hills/ha
    E : 75,000 hills/ha
  • 9. 2.Yield (Xianju)
  • 10. 2.Yield (CNRRI) – 2 seasons
  • 11. Ⅲ.Organic fertilizer
  • 12. Effect of organic fertilizer on grain yield
    D1: 7.5 hills/m2; D2: 13.5 hills/m2; D3 :19.5 hills/m2; CK: 19.5 hills/m2
  • 13. Ⅳ. Water management
  • 14. Quantitative measurement of water management
  • 15.
  • 16. SWD: Shallow water depth with wetting and drying
  • 17. Comparison of water input and output under different irrigation methods.
  • 18. Changes in redox potential of SWD at different growth stages ( A----SWD)
  • 19. The number of actinomycetes under different fertilizer and water management regimes
    I1 =SWD; I2 = CKF1 = Chemical fertilizer
    F2 = 50% organic, 50% chemical fertilizer
    F3 = All organic fertilizer
  • 20. Physiological characteristics of rice leaves at flowering stage as influenced by manure and density
    D1: 7.5 hills/m2; D2: 13.5hills/m2; D3 : 19.5hills/m2
  • 21. Nitrogen accumulated before flowering stage and during the grain-filling period (GFP); N remobilized from vegetative tissue; leaf and grain N content; total N accumulated at maturity; and N harvest index (NHI) of 2 irrigation methods in 2 rice cultivars (Liangyoupeijiu and Eryou 7954)
  • 22. Effect of SWD on tiller composition and productive panicles
  • 23. Effect of SWD on flag leaf traits(IIyou7954)
  • 24. Effect of SWD on canopy light transmittance rate at flowering stage (A = SWD; T = CK)
  • 25. Effect of SWD on the incidence of sheath blight
  • 26. Effect of SWD on bleeding sap of rice root ( A = SWD; T = CK)
  • 27. V.Comparison between SRI and traditional method
  • 28. Physiological characteristics of rice leaves as influenced by SRI
    * Means followed by different letters are significantly different at the P = 0.05 level according to Duncan’s Multiple Range Test.
  • 29. a
    c
    b
    b
    Effect of transplanting density on leaf nitrogen content under SRI
    CK = 25 hills/m2; D1 = 7.5 hills/m2D2 = 13.5 hills/m2D3 = 19.5 hills/m2
  • 30. Various tiller components with SRI
  • 31. CK
    SRI
    Root growth of SRI at stem elongation
  • 32. Demonstration yields of SRI
    (2003-2005)
  • 33. Ⅵ. Operations of SRI
  • 34. A. Precision seeding with seedlings by tray
  • 35. B. Density control
    Transplanting density:
    13.5-19.5 x 104 hill/ha
  • 36. C. Standard of field water control is SWD
  • 37. “SWD” =
    Three Shallows – transplanting, when spraying with insecticide, and during booting-floweringstage
    Three Wets - tillering, panicle initiation, and during milk grain-mature grainstage
    One Dry - tiller control
  • 38. Wet tillage
    Shallow-water puddling
  • 39. Shallow-water transplanting
    Dry for tiller control
    Wet tillering
  • 40. Shallow-water for booting to flowering
    Wet for mature grain
    Wet for milk grain
  • 41. D. Maintaining N and increasing K
  • 42. Need to increase organic fertilizer
  • 43. E . Integrated Pest Management (IPM)
  • 44. Demonstration of SRI in Bu Tou Village
  • 45. Technical Guidance
  • 46.
  • 47. Thank you