Abstract
This study aims to understand the influence of chlorophyll fluorescence parameters on the yield of winter wheat in some areas of China. Nitrogen (N) application is believed to improve photosynthesis in flag leaf, which ultimately increases the final yield. The experiment was conducted in the wheat experimental base of Shanxi Agricultural University in Taigu, Shanxi Province, China; before sowing, four N application rates were set—N0, N120, N150, and N210 kg ha–1 of the Yunhan-20410 variety from 2019 to 2022. The results from different parameters of research showed that the organic manure partial substitution for chemical fertilizer increased post-anthesis N uptake by 16.4 and 81.4%, thus increasing the post-anthesis photosynthetic capacity and delaying leaf senescence. N150 treatment can improve dry matter (DM) accumulation, thus promoting the increase of the yield. The maximum net photosynthesis PN value of the booting stage and flowering stage indicated that nitrogen application could significantly improve the photosynthetic rate of wheat leaves, among which medium nitrogen treatment had the most significant promoting effect. The single-photon avalanche diode (SPAD) value of the leaf of wheat in each treatment increased rapidly in a small range from the jointing stage to the booting stage, respectively. The grain yield under N fertilizer partial substitution for N fertilizer treatment increased by 23%. According to the different significance test, the effects of nitrogen application rate on net photosynthesis PN of winter wheat were extremely significant at all growth stages, indicating that changing the population distribution mode and nitrogen level could effectively improve leaf photosynthetic performance and that N150 level was the best.
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Claims 10
Claim · model-written summary
Organic manure partial substitution increased post-anthesis nitrogen uptake by 16.4 and 81.4%.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- organic manure partial substitution for chemical fertilizere0
- Outcome
- post-anthesis N uptakee0
- Direction
- increasede0
- Value
- 16.4 and 81.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results from different parameters of research showed that the organic manure partial substitution for chemical fertilizer increased post-anthesis N uptake by 16.4 and 81.4%, thus increasing the post-anthesis photosynthetic capacity and delaying leaf senescence.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Organic manure partial substitution increased post-anthesis photosynthetic capacity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- organic manure partial substitution for chemical fertilizere0
- Outcome
- post-anthesis photosynthetic capacitye0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results from different parameters of research showed that the organic manure partial substitution for chemical fertilizer increased post-anthesis N uptake by 16.4 and 81.4%, thus increasing the post-anthesis photosynthetic capacity and delaying leaf senescence.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Organic manure partial substitution delayed leaf senescence.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- organic manure partial substitution for chemical fertilizere0
- Outcome
- leaf senescencee0
- Direction
- delayinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results from different parameters of research showed that the organic manure partial substitution for chemical fertilizer increased post-anthesis N uptake by 16.4 and 81.4%, thus increasing the post-anthesis photosynthetic capacity and delaying leaf senescence.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
N150 improved dry matter accumulation.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- N150 treatmente0
- Outcome
- dry matter (DM) accumulatione0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N150 treatment can improve dry matter (DM) accumulation, thus promoting the increase of the yield.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
N150 promoted yield increase.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- N150 treatmente0
- Outcome
- yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N150 treatment can improve dry matter (DM) accumulation, thus promoting the increase of the yield.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Nitrogen application significantly improved leaf photosynthetic rate, with medium nitrogen most effective.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- leavese0
- Treatment
- nitrogen applicatione0
- Outcome
- photosynthetic ratee0
- Direction
- improvee0
- Qualifier
- medium nitrogen treatment had the most significant promoting effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum net photosynthesis PN value of the booting stage and flowering stage indicated that nitrogen application could significantly improve the photosynthetic rate of wheat leaves, among which medium nitrogen treatment had the most significant promoting effect.”
Claim · model-written summary
Leaf SPAD value rapidly increased from jointing to booting in every treatment.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- leafe0
- Outcome
- single-photon avalanche diode (SPAD) valuee0
- Direction
- increasede0
- Qualifier
- from the jointing stage to the booting stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The single-photon avalanche diode (SPAD) value of the leaf of wheat in each treatment increased rapidly in a small range from the jointing stage to the booting stage, respectively.”
Claim · model-written summary
Partial substitution of nitrogen fertilizer raised grain yield by 23%.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- N fertilizer partial substitutione0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 23%e0
- Comparator
- N fertilizer treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield under N fertilizer partial substitution for N fertilizer treatment increased by 23%.”
t0“Wheat (Triticum aestivum L.)”
Claim · model-written summary
Nitrogen application rate significantly affected net photosynthesis at every growth stage.
- Taxon
- wheatTriticum aestivume0
- Treatment
- nitrogen application ratee0
- Outcome
- net photosynthesis PNe0
- Qualifier
- at all growth stagese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to the different significance test, the effects of nitrogen application rate on net photosynthesis PN of winter wheat were extremely significant at all growth stages, indicating that changing the population distribution mode and nitrogen level could effectively improve leaf photosynthetic performance and that N150 level was the best.”
Claim · model-written summary
N150 was the best nitrogen level for leaf photosynthetic performance.
- Taxon
- wheatTriticum aestivume0
- Treatment
- N150 levele0
- Outcome
- leaf photosynthetic performancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to the different significance test, the effects of nitrogen application rate on net photosynthesis PN of winter wheat were extremely significant at all growth stages, indicating that changing the population distribution mode and nitrogen level could effectively improve leaf photosynthetic performance and that N150 level was the best.”
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