Abstract
Water scarcity is a key limitation to winter wheat production in the North China Plain, and it is essential to explore the optimal timing of spring irrigation to optimize N and Si uptake as well as to safeguard yields. The aim of this study was to systematically study the effect mechanism of nitrogen and silicon absorption of winter wheat on yield under spring irrigation and to provide a scientific basis for optimizing irrigation strategy during the growth period of winter wheat. In this experiment, the winter wheat 'Heng 4399' was used. Five irrigation periods, i.e., 0 d (CK), 5 d (AJ5), 10 d (AJ10), 15 d (AJ15), and 20 d (AJ20) after the jointing stage, were set up to evaluate the nitrogen (N) and silicon (Si) absorption and grain yield (GY). The results showed that delayed irrigation for 5-10 days at the jointing stage had increased the GY. With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence. Compared with AJ15 and AJ20, the N accumulation of vegetative organs in AJ5 increased by 3.05~23.13% at the flowering stage, 14.12~40.12% after the flowering stage, and a 1.76~6.45% increase in the N distribution rate at maturity stage. A correlation analysis revealed that the GY was significantly and positively correlated with the N/Si accumulation at the anthesis and N translocation after the anthesis stage. In conclusion, under limited irrigation conditions, delaying watering for 5 to 10 days at the jointing stage can improve the nitrogen and silicon absorption and nutrient status of wheat plants and increase wheat yield.
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Claims 12
Claim · model-written summary
Irrigation delayed 5 to 10 days after jointing increased wheat grain yield.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Treatment
- delayed irrigation for 5-10 days at the jointing stagee0
- Outcome
- GYe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that delayed irrigation for 5-10 days at the jointing stage had increased the GY.”
t0“Winter Wheat”
Claim · model-written summary
Mature whole plant N/Si content first rose and then fell as irrigation was delayed.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- maturity periode0
- Treatment
- delay of irrigation timee0
- Outcome
- N/Si content of the entire plante0
- Direction
- increased first and then decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence.”
t0“Winter Wheat”
Claim · model-written summary
Maximum N content occurred under AJ15 in 2015.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- AJ15e0
- Outcome
- N contentse0
- Direction
- maximume0
- Qualifier
- 2015e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence.”
t0“Winter Wheat”
Claim · model-written summary
Maximum N content occurred under AJ5 in 2020.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- AJ5e0
- Outcome
- N contentse0
- Direction
- maximume0
- Qualifier
- 2020e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence.”
t0“Winter Wheat”
Claim · model-written summary
Si concentration peaked under AJ5.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- AJ5e0
- Outcome
- Si concentrationse0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence.”
t0“Winter Wheat”
Claim · model-written summary
Si concentration peaked under AJ10.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- AJ10e0
- Outcome
- Si concentrationse0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the delay of irrigation time, the N/Si content of the entire plant at the maturity period increased first and then decreased; among that, the maximum N contents appeared in AJ15 and AJ5 in 2015 and 2020, respectively, while the Si concentrations appeared in AJ5 and AJ10 in sequence.”
t0“Winter Wheat”
Claim · model-written summary
AJ5 increased N accumulation of vegetative organs by 3.05~23.13% at flowering stage versus AJ15 and AJ20.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- flowering stagee0
- Treatment
- AJ5e0
- Outcome
- N accumulation of vegetative organse0
- Direction
- increasede0
- Value
- 3.05~23.13%e0
- Comparator
- AJ15 and AJ20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with AJ15 and AJ20, the N accumulation of vegetative organs in AJ5 increased by 3.05~23.13% at the flowering stage, 14.12~40.12% after the flowering stage, and a 1.76~6.45% increase in the N distribution rate at maturity stage.”
t0“Winter Wheat”
Claim · model-written summary
AJ5 increased N accumulation of vegetative organs by 14.12~40.12% at after the flowering stage versus AJ15 and AJ20.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- after the flowering stagee0
- Treatment
- AJ5e0
- Outcome
- N accumulation of vegetative organse0
- Direction
- increasede0
- Value
- 14.12~40.12%e0
- Comparator
- AJ15 and AJ20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with AJ15 and AJ20, the N accumulation of vegetative organs in AJ5 increased by 3.05~23.13% at the flowering stage, 14.12~40.12% after the flowering stage, and a 1.76~6.45% increase in the N distribution rate at maturity stage.”
t0“Winter Wheat”
Claim · model-written summary
AJ5 increased N distribution rate by 1.76~6.45% at maturity stage versus AJ15 and AJ20.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- maturity stagee0
- Treatment
- AJ5e0
- Outcome
- N distribution ratee0
- Direction
- increasee0
- Value
- 1.76~6.45%e0
- Comparator
- AJ15 and AJ20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with AJ15 and AJ20, the N accumulation of vegetative organs in AJ5 increased by 3.05~23.13% at the flowering stage, 14.12~40.12% after the flowering stage, and a 1.76~6.45% increase in the N distribution rate at maturity stage.”
t0“Winter Wheat”
Claim · model-written summary
Grain yield was significantly positively correlated with N/Si accumulation at the anthesis.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- N/Si accumulation at the anthesise0
- Outcome
- GYe0
- Direction
- positively correlatede0
- Qualifier
- N/Si accumulation at the anthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A correlation analysis revealed that the GY was significantly and positively correlated with the N/Si accumulation at the anthesis and N translocation after the anthesis stage.”
t0“Winter Wheat”
Claim · model-written summary
Grain yield was significantly positively correlated with N translocation after the anthesis stage.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- N translocation after the anthesis stagee0
- Outcome
- GYe0
- Direction
- positively correlatede0
- Qualifier
- N translocation after the anthesis stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A correlation analysis revealed that the GY was significantly and positively correlated with the N/Si accumulation at the anthesis and N translocation after the anthesis stage.”
t0“Winter Wheat”
Claim · model-written summary
Under limited irrigation, delaying watering 5 to 10 days at jointing was recommended to improve wheat nutrient status and yield.
- Taxon
- wheat plantsTriticum aestivume0
- Outcome
- delaying watering for 5 to 10 days at the jointing stagee0
- Qualifier
- limited irrigation conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In conclusion, under limited irrigation conditions, delaying watering for 5 to 10 days at the jointing stage can improve the nitrogen and silicon absorption and nutrient status of wheat plants and increase wheat yield.”
The same questions in other papers
irrigation · yield · Triticum aestivum (wheat)Positive and negative results
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