1001 Evaluation of Key Factors of SRI Method
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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
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1001 Evaluation of Key Factors of SRI Method
- 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)
- 7. Ⅱ. Spacing
- 8. 1. Tillering A: 195,000 hills/ha C: 135,000 hills/ha E : 75,000 hills/ha
- 10. 2.Yield (CNRRI) – 2 seasons
- 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
- 14. Quantitative measurement of water management
- 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
- 47. Thank you