1002 Super high- yielding rice cultivation techniques in cold region: Heilongjiong Province

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Presenter: Jin Zhengxun, …

Presenter: Jin Zhengxun,
Northeast Agricultural University Haerbin

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  • 1. Super high- yielding rice cultivation
    techniques in cold region:
    Heilongjiong Province
    Jin Zhengxun
    Northeast Agricultural University
    Haerbin
  • 2. Natural Resources in Heilongjiang Province
    Latitude :43°25′~ 53°33′
    Area :45.4만 Km2
    Elevation: 300~1780m
    Accumulated T:1800~2800℃
    Annual mean temperature :
    6 ~ 4℃
    Average daily sunshine hours: 2400~2800 h
    Rainfall: 250~700mm,60%
    Frost-free period :100~140 d
  • 3. The average temperature change in Heilongjiang Province
  • 4. Comparison of day and night temperature difference
  • 5. Rice cropping area in Heilongjiang Province
  • 6. Change of rice yield in Heilongjiang Province
  • 7. Cultivation problems in Heilongjiang Province
    1. Chilling damage and blast of rice
    2. Must pay special attention to the pre-transplant growth of plants
    3. Transplant ultra-sparsely
    Lodging
  • 8. Way To Solve Problems
    1. Control pre-tillering number
    2. Promote early heading 
    3. Increase maturity
  • 9. 1. Select high-yielding varieties
  • 10.
  • 11.
  • 12. 2. More tillers per plant in seedling bed
  • 13. Seedling facility
  • 14. Seedling transplanting method of two stages
    First stage:
    Sowing date: March 15
    Sowing rate:100 g/tray
    Second stage:
    Transplanting date: April 15
    Planting specification :2cm×2cm, 1 plant per hill
  • 15. Large seedling trays(352 holes)
  • 16. Mechanical sowing in straw trays
  • 17. Mechanical sowing by hand
  • 18. How to prevent leggy seedlings?
  • 19. 3. Transplant seedlings with soil blocks
  • 20. To turn seedlings green early
  • 21. To facilitate planting by machine
  • 22.
  • 23. 4. Appropriatetransplanting density
  • 24. Relationship between plant density and yield components
    Low input :(N-P2O5-K2O) 6-3-3Kg/10a, High input:(N-P2O5-K2O) 12-6-6Kg/10a,Variety:Dongnong V4
  • 25. Planting Specifications:
    36 cm×16 cm, 2-3 plants per hill
  • 26. 5. Maintain reasonable N rate and increase potash application rate
    Annual N application date(M、D )
    N:P2O5:K2O = 1 : 0.5 : 0.8-1
  • 27. Top-dressing principle of super-high yielding rice
    1. Tillering fertilizer: top dressing after turning green,10% relaying fertilizer 10 d after first tillering fertilizer;
    2. Top dressingat panicle initiation by diagnosis
  • 28. Determining application date of fertilizer
    1. First top dressing of panicle fertilizerat heading stage (panicle length is generally 0 cm on July 5)
    • When panicle length is 1cm , the stage is 18 d before heading;
    • 29. When panicle length is 2cm, the stage is 15 d before heading;
    • 30. When panicle length is 8cm,the stage is 10 d before heading.
  • 2. Second top dressing of panicle fertilizer at 10d after first top dressing of panicle fertilizer.
    3. Third top dressing of panicle fertilizer at heading stage.
  • 31. 6.Irrigation method
  • 32. Maintain moisture soil at 30 d after heading
  • 33. 7. Harvest in timely way
  • 34. Daily changes of grain weight
  • 35. Daily changes of milled rice percent
  • 36. Daily changes of taste-meter value of rice
  • 37. Suitable rice harvesting time for good quality of rice
    Production quality and yield assurance – aiming for:
    Processing quality
    Eating quality
    Accumulated temperature after heading
  • 38. Harvest date and grain maturity
  • 39. Thank you !