0412 Development of System of Rice Intensification for Rice Production in China
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0412 Development of System of Rice Intensification for Rice Production in China

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Presenter: Zhu Defeng ...

Presenter: Zhu Defeng
Slides from a powerpoint presentation made to a workshop on SRI, held at the World Rice Research Conference, Tsukuba, Japan, November 7, 2004

Audience: World Rice Research Conference, Japan

Subject Country: China

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  • Two fields of rice growth with normal methods and 3-S. The phenotypical differences are evident, much as seen with SRI.
  • Seedlings are started in heated greenhouses when there is still snow on the ground.

0412 Development of System of Rice Intensification for Rice Production in China 0412 Development of System of Rice Intensification for Rice Production in China Presentation Transcript

  • Development of SRI for Rice Production in China Slides from a powerpoint presentation made to a workshop on SRI, held at the World Rice Research Conference, Tsukuba, Japan, November 7, 2004
    • Dr. Zhu Defeng
    • China National Rice Research Institute
    • Hangzhou, PRC
    • Status of rice production in China
    • Problems in rice production
    • Trends of rice production technology
    • Basic principles and opportunity of SRI in China
    • Factors in rice growth and yield in SRI
    • SRI practice and demonstration
  • 1. Status of Rice Production in China
    • Rice in China:
    • Staple food in China for about 60 % of the population
    • Less than 30 % of the grain crop area, but 40% of grain production
    • China in World:
    • 23% of rice area
    • 37% of rice production
  • Percentage of grain crop area
  • Percentage of grain crop production
  • Trend of rice production in China
  •  
  • Percentage of planting area of different types of rice and average planting area for types of variety Type Percentage of planting area (%) Indica inbred 17.3 Japonica inbred 27.6 Two-line hybrid 5.4 Three-line hybrid 49.8
  • Percentage of hybrid planting area to national rice area
  • 2. Problems in Rice Production
  • Limitations to rice production in China
    • Low profitability at present
    • Transfer of agricultural labor to
    • industrial sector and urban centers
    • Low resource-use efficiency
    • Small-scale farm management
  • Costs of rice production Items Percentage(%) Labour 45.9 Fertilizers 17.9 Pesticides 4.9 Machine/animal power 5.8 Irrigation /drainage 12.9
  • Nitrogen 180kg/ha ave. -- only 25-30% efficiency Pesticide 5-6 times of application for E/L rice 6-8 times of application for single rice Water Irrigation of 8000-1200M 3 /ha Low resource-use efficiency
  • ~ 120M farms are planting rice at present Average area per farm -- 0.2-0.4 ha Small-scale of production
  • 3. Trends in Rice Production Technology
  • Changes in main traits of dominant varieties Period 60s -80s After 90s Plant height (cm) 80-100 100-125 Tillering capacity Medium Strong Panicle size Medium Large
  • Changes of cultivation practice S: shallow water layer, M: moisture, D: dry Period 50s-60s 70s-80s 90s After 90s Plant density Sparse Dense Sparse More sparse Irrigation Deep Deep-Shallow S-M-D S-M-D
  • 4. Basic Principles and Opportunity of SRI in China
  • Basic principles of SRI and functions Basic principle Function Younger seedling Tiller growth Sparse planting Tiller growth, large panicle S-M-D irrigation Water saving, root growth, and fertilizer use efficiency Organic/chemical fertilizer Soil fertility
  • Contributions of SRI Practice Contribution Sparse planting with younger seedling Labor-saving S-M-D irrigation Water-saving Organic/chemical fertilizer Sustainable soil fertility
  • 5. Factors in Rice Growth and Yield with SRI
  • 1) Comparison of yield in SRI and check (Jiayou 99 variety, 2003) TR Panicle (No./m 2 ) Grains (No./ panicle Fertility (%) Grain weight (g /1000) Yield (t/hm 2 ) Relative yield(%) SRI 215.7 222.8 91.2 25.3 11.1 119.4 CK 209.6 191 92.6 25.1 9.3 100.0
  •  
  •  
  • Analysis of factors of yield increase in SRI compared with check Item Yield (t/hm 2 ) Contribution (%) Panicle no. 0.27 15.7 Grain no. 1.38 80.1 Grain weight 0.07 4.3 Total 1.73 100.0
  • 2) Pattern of tiller growth in SRI and check
  • 3) Light penetration
  • 4) Effect of planting type on angle of tiller at 45 DAS
  • Experiment of water saving in CNRRI 5) Water saving
  • Experiment of water saving in CNRRI
  • Comparison of water consumption in SRI and check Treatment Water consumption (m3/ha) Rate of saved water (%) CK 6289.8 0.0 S1 4879.9 22.4 S2 3806.7 39.5 S3 3477.0 44.7
  • 5. SRI Practice and Demonstration
  • 1) SRI demonstrations in Zhejiang
  • Yield and location of SRI demonstrations in Zhejiang province (2004) Location Variety Area (ha) Yield (t/ha) Tiantai Nei2you 6 6.8 12.1 Tiantai Liangyoupeijiu 10.0 11.7 Chengzhou Zhongzheyou 1 7.5 12.3 Lingan Zhongzheyou 1 7.6 10.7 Kaihua Zhongzheyou 1 7.2 12.2
  • SRI practice in South China (hybrid)
    • 1) Transplant seedlings with 4-5 leaves
    • 2) Sparse planting, 12-15 hills/m 2 with 1 plant/hill for large panicle/strong tillering CV; or 15-18hills/m 2 with 1 plant for medium panicle/tillering CV
    • 3) Shallow-moisture-dry irrigation system
  • Seedling raising in tray
  • 3 DAS
  • 16 DAS
  • Land preparation in moist soil
  • Transplanting in shallow water layer
  • 25 DAS After rainfall or irrigation
  • 33 DAS
  • 45 DAS Without water layer
  • 65 DAS 53 DAS
  •  
  •  
  • Heavy panicle
  • 2) SRI Demonstrations in Northeast Region
  • SRI (3-S) practice in Northeast China (Japonica)
    • 1) 5-leaf seedling (about 45 days age) because of cold conditions at planting time
    • 2) Sparse planting, 14-18 hills/m 2 with 1-2 plants for large panicle/strong tillering CV
    • 3) Shallow-moisture-dry irrigation system
  • Normal 3-S
  • Seedling raising in tray
  • Seedling raising in upland seedbed
  • Seedlings are started at the end of winter in plastic greenhouses
  •  
  • Sparse sowing check
  • Wide row planting
  • Moist soil
  •  
  • Conclusions
    • Rice management technology that matches new varieties/hybrids is needed to further increase yield
    • SRI principles match the current trends in the advance of rice cultivation technology
    • Site-specific SRI technology is needed to for raising the yields of Super-Rice and for greater water productivity
  • THANK YOU