Presenter: Ma Jun, Sichuan Agricultural University Workshop on the System of Rice Intensification, Exchanging Experience in China, the Democratic People's Republic of Korea and InternationallyOrganized and hosted by the China National Rice Research Institute (CNRRI), with support from The Asia Foundation. Hangzhou, China, February 28-March 2, 2010

1. Study and Utilization of the SRI Technology for Super High Yield in Sichuan Co-partner units ： Sichuan Academy of Agricultural Sciences General Station of Sichuan Agricultural Technology Extension Sichuan Kenong Seed Industry Co., Ltd. Ma Jun Sichuan Agricultural University

7. 2. New Technology of SRI for Super High Yield

10. Grain yield and its components under different seedling-ages and planting densities Variety ： Xieyou 527 Seedling ages Plant density *10 4 plant/ha Effective panicles * 10 4 /ha Spikelets/ panicle Filled grains/ panicle Seed setting rate ( % ) 1000-grain wt. /g Yield (t/ha) 2 -leaf 4.5 156.68 155.4 134.4 86.49 30.59 7.11 9.0 192.15 137.4 120.2 87.48 32.26 7.78 13.5 238.95 129.3 115.0 88.94 32.18 8.33 Average 195.93 140.7 123.2 87.64 31.68 7.74 3-leaf 4.5 153.0 148.4 126.4 85.18 30.35 6.96 9.0 195.15 136.3 118.1 86.65 31.45 8.43 13.5 225.23 127.1 110.1 86.62 32.0 8.07 Average 191.13 137.27 118.2 86.15 31.27 7.82 4-leaf 4.5 147.68 161.0 143.1 88.88 30.74 7.06 9.0 192.15 139.4 119.4 85.65 31.92 7.88 13.5 225.0 125.2 109.2 87.22 32.15 8.11 Average 188.28 141.87 123.9 87.25 31.60 7.68 5-leaf 4.5 153.75 151.2 134.3 88.82 30.60 7.15 9.0 192.0 137.4 121.1 88.14 31.98 7.92 13.5 220.5 135.0 116.4 86.22 31.94 8.18 Average 188.75 141.2 123.9 87.73 31.51 7.75

12. Comparison of grain yield and its components under different cultivation practices T-SRI: Triangular system Cultiva-tion methods No. of effective panicles (10 4 /ha) No. of spikelets /panicle No. of total spikelets (10 6 /ha) Seed setting rate (%) 1000-grain wt. ( g ) Grain yield ( t/ha ) Increase(%) T-SRI 337.5 185.3 703.47 88.9 25.9 15.075 37.67 SRI 279.0 181.0 577.13 87.5 26.0 12.945 18.22 Standard cultivation (CK) 268.5 177.3 531.90 89.5 26.1 10.950 —

13. 30-40cm 30-40cm 10-12cm

14. Transplanting machine — for making holes in zero-till field

16. Transplanting young seedlings with 3-4 leaves

18. Comparison of grain yield and its components under different water management Note ： A = damp irrigation (no-water layer, soil water potential (ψ soil : -0.017±0.003MPa). B = wet, dry, shallow, interval irrigation. C = dry cultivation (ψsoil: -0.065±0.005MPa). D = submerged irrigation (CK; maintain water depth of 1-3 cm, ψ soil : 0MPa) Varieties Treatment No. of effective panicles/plant Spikelets /panicle Seed setting rate(%) 1000-grain weight (g) Grain yield (g/plant) Water use efficiency (kg/m 3 ) Gangyou 527 A 10.6A 152.8 82.2 29.9 42.6 2.15 B 11.0A 167.4 82.5 30.0 46.7 2.17 C 7.2B 117.7 67.2 26.2 15.8 1.23 D 10.1A 164.3 82.0 29.0 41.2 1.34 Dyou 363 A 10.8A 139.7 77.3 26.2 38.9 1.96 B 11.2A 154.7 82.0 26.5 42.8 1.99 C 8.9B 107.5 65.3 23.1 15.4 1.20 D 10.3A 146.2 77.0 26.1 37.8 1.23 Shanyou 63 A 10.6A 111.2 71.4 26.1 34.2 1.73 B 10.9A 147.6 74.7 26.3 37.4 1.74 C 8.6B 85.1 58.6 21.9 10.4 0.81 D 10.2A 140.6 71.2 26.0 31.8 1.03

21. Comparison of yield and its components under different kinds of fertilizer Variety ： 2480/881 Treatments No. of effective panicles ×10 4 /ha Spikelets /panicle No. of filled grains/ panicle Seed setting rate % 1000-grain weight (g) Grain yield t/ha Yield increase±% Blank (CK) 117.82 228.23 178.27 78.12 22.44 5.00c - Organic fertilizer 171.44 212.19 161.20 76.00 23.08 7.41b +48.2 Chemical fertilizer 170.34 242.80 192.70 79.37 22.72 7.66b +53.2 1/2 organic +1/2 chemical fertilizer 168.41 246.31 196.12 79.62 22.81 7.59b +51.8 Organic compound fertilizer 166.21 249.85 195.10 78.09 23.30 7.69b +53.8 Organic + chemi cal + microbial activity fertilizer 182.46 260.99 199.00 76.25 22.39 8.81a +76.2

26. Effects of different sowing densities and transplanting seedling age on rice yield A 1 , A 2 , A 3 : sowing densities , respectively, of 10, 15, 20g/m 2 on nursery bed B1-B7 : seedling age at transplanting 40, 46, 52, 58, 64, 70, 76d, respectively

28. Grain yield and its components under different seedling ages and spacing A1, A2, A3 = transplanting seedlings with 2, 5, 8 leaves, respectively. B1, B2, B3 = triangular SRI with spacing of 30×30 cm, 40×40 cm, 50×50 cm, respectively. CK = Conventional cultivation , transplant seedlings with 8 leaves, spacing16.7×33.3 cm Treatments Effective panicles Spikelets /panicle 1000-grain weight Seed setting Yield (×10 4 /hm 2 ) (Sp./Pa.) (g) (%) (kg/hm 2 ) A1 B1 207Aa 175Bc 28.2ABCbc 77.8Bd 10,168Bb B2 177Cc 212ABa 30.4ABab 85.0ABabc 11,889Aa B3 155Dd 220ABa 29.9Aa 85.6Aab 9,606BCb A2 B1 197Bb 182ABbc 28.5BCc 80.5ABbcd 9,920BCb B2 156Dd 205ABabc 29.4ABCabc 86.8ABabc 9,935BCb B3 133Ee 216Aa 28.5ABCabc 88.6Aab 8,464Dd A3 B1 176Cc 181Bc 27.4Cc 82.4ABcd 9,151 Dd B2 133Ee 214ABab 28.4ABCbc 88.0ABabc 9,448 CDc B3 113Ff 206ABab 29.1ABCbc 86.6Aa 6,927Ee CK 159Dd 156Dd 26.5CDc 66.5Ce 7,347Ef

29. Triangular SRI field in Yuechi, Sichuan

31. Grain yield under different nitrogen application rates （ kg/667m 2 ） A, B, C, D = ratio of basic+tiller fertilizer : panicle fertilizer was, respectively, 5 ： 5, 6 ： 4, 7 ： 3, or 8 ： 2 1, 2, 3 = date of panicle fertilizer application was, respectively, the emergence of 5th and 3 rd ; 4th and 2 nd ; or 3rd and 1st leaf from top CK1 = P and K but no N but P. CK2 = no N, P, K. Treat-ment A B C D Average CK1 CK2 1 727.98 685.34 695.27 695.20 700.95 460.62 447.83 2 706.02 728.24 680.02 680.50 698.70 3 703.77 670.28 711.97 681.13 691.79 Ave. 712.59 694.62 695.75 685.61

34. Dr. Norman visited SRI field in Meishan in 2007

35. Demonstrations of SRI technology for super high yield in 2008 *(Tons/ha) Demon-stration counties Variety Demon-stration area (×667m 2 ) Measured area (×667m 2 ) Measured yield (kg/667m 2 ) Dongpo Gangyou188 52 1.45 789.9 (11.85)* Guanghan Chuanxiang 9838 15 1.115 853.5 (12.8)* Zhongjiang (hilly area) Eryouhang 1 65 1.2 721.2 (10.82)*

36. Extension area and yield of new SRI technology in Sichuan province, 2004-2009 Year Area （ ha ） Average provincial yield ( t/ha ） Average yield with new SRI technology Yield (t/ha) SRI increase (t/ha) over average provincial yield SRI increase (%) over average provincial yield 2004 1,133 7.74 9.11 1.37 17.6 2005 7,267 7.65 9.44 1.79 23.3 2006 5,740 7.01 8.81 1.80 25.7 2007 117,267 7.49 9.01 1.59 21.2 2008 204,000 7.58 9.41 1.83 24.2 2009 250,333 7.62 9.11 1.49 19.5

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