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

  • Super high- yielding rice cultivation
    techniques in cold region:
    Heilongjiong Province
    Jin Zhengxun
    Northeast Agricultural University
    Haerbin
  • 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
  • The average temperature change in Heilongjiang Province
  • Comparison of day and night temperature difference
  • Rice cropping area in Heilongjiang Province
  • Change of rice yield in Heilongjiang Province
  • 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
  • Way To Solve Problems
    1. Control pre-tillering number
    2. Promote early heading 
    3. Increase maturity
  • 1. Select high-yielding varieties
  • 2. More tillers per plant in seedling bed
  • Seedling facility
  • 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
  • Large seedling trays(352 holes)
  • Mechanical sowing in straw trays
  • Mechanical sowing by hand
  • How to prevent leggy seedlings?
  • 3. Transplant seedlings with soil blocks
  • To turn seedlings green early
  • To facilitate planting by machine
  • 4. Appropriatetransplanting density
  • 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
  • Planting Specifications:
    36 cm×16 cm, 2-3 plants per hill
  • 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
  • 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
  • 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;
    • When panicle length is 2cm, the stage is 15 d before heading;
    • 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.
  • 6.Irrigation method
  • Maintain moisture soil at 30 d after heading
  • 7. Harvest in timely way
  • Daily changes of grain weight
  • Daily changes of milled rice percent
  • Daily changes of taste-meter value of rice
  • Suitable rice harvesting time for good quality of rice
    Production quality and yield assurance – aiming for:
    Processing quality
    Eating quality
    Accumulated temperature after heading
  • Harvest date and grain maturity
  • Thank you !