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

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Presenter: Jin Zhengxun,
Northeast Agricultural University Haerbin

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

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

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