Abstract
Experiments were conducted in order to study strong gluten Xinong 979's water and fertilizer requirement rule to provide scientific basis for its standardized cultivation of high yield and high efficiency. Under field conditions,taking wheat cultivar Xinong 979 as the test material,we studied the effects of water and nitrogen coupling on the change of chlorophyll content and photosynthetic rate of flag leaf after anthesis,and then the water and nitrogen use efficiency,yield and the performance of the components of winter wheat. The results of this experiment showed that,the treatments of W2N2and W2N3had the advantage of maintaining high chlorophyll content and high rate with a longer time.The wheat yield increased with the increase of nitrogen supply on a scale of 0- 300 kg·hm- 2nitrogen application range,with the nitrogen supply increasing,the N use efficiency first increased,thereafter reduced. With the irrigation amount increasing,the grain yield first increased,thereafter reduced,the water use efficiency decreased with the irrigation amount increasing. Under the experimental conditions,the maximum yield treatment was W2N3( 60% of the largest capacity field and 300 kg·hm- 2nitrogen application),it's grain yield weight was 8 648. 49 kg·hm- 2,and the weight of treatment W2N2was 7 944. 14 kg·hm- 2,reduced by 8.87%. Compared with the maximum yield,the differ-ence was not significant,but the N use efficiency of treatment W2N2was significantly higher than that of other treatments. In conclusion,it was suggested treatment W2N2be the most efficient in irrigation and nitrogen management practices.
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Claims 9
Claim · model-written summary
W2N2 and W2N3 maintained high chlorophyll content and photosynthetic rate longer.
Not reportedTaxonComparator
Verbatim
e0“the treatments of W2N2and W2N3had the advantage of maintaining high chlorophyll content and high rate with a longer time.”
Claim · model-written summary
Wheat yield increased as nitrogen increased through 300 kg per hectare.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- increase of nitrogen supply on a scale of 0- 300 kg·hm- 2nitrogen application rangee0
- Outcome
- wheat yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wheat yield increased with the increase of nitrogen supply on a scale of 0- 300 kg·hm- 2nitrogen application range”
Claim · model-written summary
Nitrogen use efficiency first increased and then declined as nitrogen supply increased.
- Treatment
- nitrogen supply increasinge0
- Outcome
- N use efficiencye0
- Direction
- first increased,thereafter reducede0
Not reportedTaxon
Verbatim
e0“with the nitrogen supply increasing,the N use efficiency first increased,thereafter reduced.”
Claim · model-written summary
Grain yield first increased then declined as irrigation increased.
- Treatment
- irrigation amount increasinge0
- Outcome
- grain yielde0
- Direction
- first increased,thereafter reducede0
Not reportedTaxon
Verbatim
e0“With the irrigation amount increasing,the grain yield first increased,thereafter reduced”
Claim · model-written summary
Water use efficiency declined as irrigation increased.
Not reportedTaxon
Verbatim
e0“the water use efficiency decreased with the irrigation amount increasing.”
Claim · model-written summary
W2N3 gave the maximum grain yield of 8 648. 49 kg·hm- 2.
- Treatment
- W2N3( 60% of the largest capacity field and 300 kg·hm- 2nitrogen application)e0
- Outcome
- grain yield weighte0
- Direction
- maximume0
- Value
- 8 648. 49 kg·hm- 2e0
Not reportedTaxonComparator
Verbatim
e0“the maximum yield treatment was W2N3( 60% of the largest capacity field and 300 kg·hm- 2nitrogen application),it's grain yield weight was 8 648. 49 kg·hm- 2”
Claim · model-written summary
W2N2 yielded 7 944. 14 kg·hm- 2, 8.87% below W2N3, without a significant difference.
Not reportedTaxon
Verbatim
e0“the weight of treatment W2N2was 7 944. 14 kg·hm- 2,reduced by 8.87%. Compared with the maximum yield,the differ-ence was not significant”
Claim · model-written summary
W2N2 had significantly higher nitrogen use efficiency than other treatments.
Not reportedTaxon
Verbatim
e0“the N use efficiency of treatment W2N2was significantly higher than that of other treatments.”
Claim · model-written summary
The authors recommended W2N2 for efficient irrigation and nitrogen management.
- Outcome
- treatment W2N2be the most efficient in irrigation and nitrogen management practicese0
Not reportedTaxon
Verbatim
e0“it was suggested treatment W2N2be the most efficient in irrigation and nitrogen management practices.”