Abstract
A field experiment was carried out to investigate the effects of different transplanting dates(5th,15thand25thof May) on the responses and correlations of flue-cured tobacco(FCT) seedlings to N fertilizer. The results show that when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%; the corresponding agronomic nitrogen use efficiency,physiological nitrogen use efficiency,soil nitrogen dependent rate and nitrogen harvest index were increased by 37. 4%- 49. 8%,30. 4%- 54. 8%,26. 9%- 29. 1% and 2. 9%-5. 7% respectively. Positively significant correlation were existed between postponed transplanting date and the indexes calculated such as agronomic nitrogen use efficiency,partial factor productivity for nitrogen fertilizer and soil nitrogen dependent rate; and also among these indexes. Therefore,postponing the transplanting date to 15th-25thin May is an effective way to improve tobacco yields and nitrogen fertilizer efficiency.
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Claims 8
Claim · model-written summary
Postponing transplanting from 5 May to 15 and 25 May increased tobacco yield by 5.1-6.1%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting increased nitrogen accumulated in leaves and stems by 19.8-55.2%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting increased agronomic nitrogen use efficiency by 37.4-49.8%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
e1“the corresponding agronomic nitrogen use efficiency,physiological nitrogen use efficiency,soil nitrogen dependent rate and nitrogen harvest index were increased by 37. 4%- 49. 8%,30. 4%- 54. 8%,26. 9%- 29. 1% and 2. 9%-5. 7% respectively”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting increased physiological nitrogen use efficiency by 30.4-54.8%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
e1“the corresponding agronomic nitrogen use efficiency,physiological nitrogen use efficiency,soil nitrogen dependent rate and nitrogen harvest index were increased by 37. 4%- 49. 8%,30. 4%- 54. 8%,26. 9%- 29. 1% and 2. 9%-5. 7% respectively”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting increased soil nitrogen dependent rate by 26.9-29.1%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
e1“the corresponding agronomic nitrogen use efficiency,physiological nitrogen use efficiency,soil nitrogen dependent rate and nitrogen harvest index were increased by 37. 4%- 49. 8%,30. 4%- 54. 8%,26. 9%- 29. 1% and 2. 9%-5. 7% respectively”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting increased nitrogen harvest index by 2.9-5.7%.
Verbatim
e0“when the transplanting date were postponed from 5thof May to 15thand 25thof May,both the yield and N accumulated in leaves and stems were remarkably increased by 5. 1%- 6. 1%, 19. 8%- 55. 2%”
e1“the corresponding agronomic nitrogen use efficiency,physiological nitrogen use efficiency,soil nitrogen dependent rate and nitrogen harvest index were increased by 37. 4%- 49. 8%,30. 4%- 54. 8%,26. 9%- 29. 1% and 2. 9%-5. 7% respectively”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponed transplanting date was positively correlated with agronomic nitrogen use efficiency, partial factor productivity and soil nitrogen dependent rate.
Verbatim
e2“Positively significant correlation were existed between postponed transplanting date and the indexes calculated such as agronomic nitrogen use efficiency,partial factor productivity for nitrogen fertilizer and soil nitrogen dependent rate”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
Claim · model-written summary
Postponing transplanting to 15-25 May is an effective way to improve tobacco yields and nitrogen fertilizer efficiency.
Verbatim
e3“postponing the transplanting date to 15th-25thin May is an effective way to improve tobacco yields and nitrogen fertilizer efficiency”
t0“Study on the correlations between transplanting date and nitrogen fertilizer efficiency of flue-cured tobacco (Nicotiana tabacum L.)”
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