Abstract
Two consecutive years' field experiments were conducted in Yixing City of Jiangsu province to compare the characteristics of nitrogen(N) absorption and utilization at N application rates of 0 kg / hm2,200 kg/hm2 and 270 kg / hm2 between high-yield rice cultivars of Wuyunjing 23 and Zhendao 11 planted in Taihu Lake region,with rice cultivar Wuyujing 3 as CK.The results showed the grain yield of Wuyunjing 23 and Zhendao 11 displayed stronger responses to N fertilizer application than Wuyujing 3.Wuyunjing 23 and Zhendao 11 accumulated larger N during whole growth stage compared with Wuyujing 3,and the N was accumulated mostly after heading.The better performance of Wuyunjing 23 and Zhendao 11 could be attributed to stronger root function like dry matter accumulation,root volume and root bleeding rate,and photosynthesis-related indexes like leaf area index and SPAD value after heading stage.Wuyunjing 23 and Zhendao 11 showed higher N use efficiency,which is mainly characterized by high N uptake efficiency.Due to similar capacity in translocation and distribution of dry matter and N in Wuyunjing 23 and Zhendao 11,they had no big difference in physiological N use efficiency from Wuyunjing 3.Therefore,improving physiological N use efficiency will be beneficial to further increase nitrogen use efficiency in high-yield rice cultivar in Taihu Lake region.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Wuyunjing 23 and Zhendao 11 grain yields responded more strongly to nitrogen than Wuyujing 3.
- Taxon
- rice
Oryza sativat0 - Material
- Wuyunjing 23 and Zhendao 11e0
- Outcome
- grain yielde0
- Direction
- stronger responsese0
- Comparator
- Wuyujing 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grain yield of Wuyunjing 23 and Zhendao 11 displayed stronger responses to N fertilizer application than Wuyujing 3”
t0“rice cultivars”
Claim · model-written summary
The two high-yield cultivars accumulated more nitrogen than Wuyujing 3.
- Taxon
- riceOryza sativat0
- Material
- Wuyunjing 23 and Zhendao 11e0
- Outcome
- Ne0
- Direction
- largere0
- Comparator
- Wuyujing 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wuyunjing 23 and Zhendao 11 accumulated larger N during whole growth stage compared with Wuyujing 3”
t0“rice cultivars”
Claim · model-written summary
Nitrogen accumulation occurred mostly after heading.
- Taxon
- riceOryza sativat0
- Organ / stage
- headinge0
- Outcome
- N was accumulated mostly after headinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N was accumulated mostly after heading”
t0“rice cultivars”
Claim · model-written summary
Root dry matter accumulation, root volume and bleeding rate were stronger in the two high-yield cultivars.
- Taxon
- riceOryza sativat0
- Material
- Wuyunjing 23 and Zhendao 11e0
- Outcome
- dry matter accumulation,root volume and root bleeding ratee0
- Direction
- strongere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The better performance of Wuyunjing 23 and Zhendao 11 could be attributed to stronger root function like dry matter accumulation,root volume and root bleeding rate”
t0“rice cultivars”
Claim · model-written summary
After heading, leaf area index and SPAD value supported the superior performance of the two cultivars.
- Taxon
- riceOryza sativat0
- Organ / stage
- heading stagee0
- Outcome
- leaf area index and SPAD valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis-related indexes like leaf area index and SPAD value after heading stage”
t0“rice cultivars”
Claim · model-written summary
The two high-yield cultivars had higher nitrogen use efficiency.
- Taxon
- riceOryza sativat0
- Material
- Wuyunjing 23 and Zhendao 11e0
- Outcome
- N use efficiencye0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wuyunjing 23 and Zhendao 11 showed higher N use efficiency”
t0“rice cultivars”
Claim · model-written summary
Their high nitrogen use efficiency was chiefly characterized by high uptake efficiency.
- Taxon
- riceOryza sativat0
- Outcome
- N uptake efficiencye0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which is mainly characterized by high N uptake efficiency”
t0“rice cultivars”
Claim · model-written summary
The authors recommend improving physiological nitrogen use efficiency to raise total efficiency.
- Taxon
- riceOryza sativae0
- Outcome
- improving physiological N use efficiencye0
- Setting
- Taihu Lake regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improving physiological N use efficiency will be beneficial to further increase nitrogen use efficiency in high-yield rice cultivar in Taihu Lake region”