Abstract
One-time fertilization with controlled-release urea (CRU) is a research hotspot for its lower labor cost and stability of nitrogen (N) supply for rice growth. Yet the fertilizer formulation needs to be further improved to better adjust the N supplement to meet the demand of rice plants and obtain a higher grain yield. Therefore, the effects of novel fertilizer formulations composed of CRU, urease inhibitor (UI) and nitrification inhibitor (NI) on the rice growth and photosynthetic characteristics as well as high-yield formation were tested through a two-year field experiment. The result indicated that the combined use of CRU and UI treatment can achieve higher yields than with CRU at the same N application level. Meanwhile, with a 20% reduction of N use, one-time application of CRU + UI can obtain the same high yield as the conventional split application of urea. Compared with conventional fertilization and CRU treatment, the CRU + UI treatment had suitable leaf area and biomass accumulation at the vegetative growth stage and high effective stem tiller rate. More post-anthesis dry matter accumulation, higher net photosynthesis rate and low senescence rate were guaranteed for its high yield and nitrogen agronomic efficiency.
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Claims 7
Claim · model-written summary
CRU plus UI achieved higher rice yields than CRU at the same nitrogen level.
- Taxon
- Rice
Oryza sativat0 - Treatment
- combined use of CRU and UI treatmente0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- at the same N application levele0
- Comparator
- CRUe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combined use of CRU and UI treatment can achieve higher yields than with CRU at the same N application level”
t0“Rice Production”
Claim · model-written summary
With 20% less nitrogen, one-time CRU plus UI obtained the same rice yield as conventional split urea.
- Taxon
- RiceOryza sativat0
- Treatment
- one-time application of CRU + UIe0
- Outcome
- yielde0
- Direction
- samee0
- Value
- 20% reduction of N usee0
- Comparator
- conventional split application of ureae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a 20% reduction of N use, one-time application of CRU + UI can obtain the same high yield as the conventional split application of urea”
t0“Rice Production”
Claim · model-written summary
CRU plus UI produced suitable rice leaf area and biomass accumulation during vegetative growth relative to conventional fertilization and CRU.
- Taxon
- RiceOryza sativat0
- Organ / stage
- vegetative growth stagee0
- Treatment
- CRU + UI treatmente0
- Outcome
- leaf area and biomass accumulatione0
- Direction
- suitablee0
- Comparator
- conventional fertilization and CRU treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with conventional fertilization and CRU treatment, the CRU + UI treatment had suitable leaf area and biomass accumulation at the vegetative growth stage and high effective stem tiller rate”
t0“Rice Production”
Claim · model-written summary
CRU plus UI gave a high effective stem tiller rate relative to conventional fertilization and CRU.
- Taxon
- RiceOryza sativat0
- Treatment
- CRU + UI treatmente0
- Outcome
- effective stem tiller ratee0
- Direction
- highe0
- Comparator
- conventional fertilization and CRU treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with conventional fertilization and CRU treatment, the CRU + UI treatment had suitable leaf area and biomass accumulation at the vegetative growth stage and high effective stem tiller rate”
t0“Rice Production”
Claim · model-written summary
The high yield and nitrogen efficiency of CRU plus UI were associated with more post-anthesis dry matter accumulation.
- Taxon
- RiceOryza sativat0
- Treatment
- CRU + UIe1
- Outcome
- post-anthesis dry matter accumulatione0
- Direction
- Moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More post-anthesis dry matter accumulation, higher net photosynthesis rate and low senescence rate were guaranteed for its high yield and nitrogen agronomic efficiency”
t0“Rice Production”
e1“one-time application of CRU + UI”
Claim · model-written summary
The high yield and nitrogen efficiency of CRU plus UI were associated with higher net photosynthesis.
- Taxon
- RiceOryza sativat0
- Treatment
- CRU + UIe1
- Outcome
- net photosynthesis ratee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More post-anthesis dry matter accumulation, higher net photosynthesis rate and low senescence rate were guaranteed for its high yield and nitrogen agronomic efficiency”
t0“Rice Production”
e1“one-time application of CRU + UI”
Claim · model-written summary
The high yield and nitrogen efficiency of CRU plus UI were associated with low senescence rate.
- Taxon
- RiceOryza sativat0
- Treatment
- CRU + UIe1
- Outcome
- senescence ratee0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More post-anthesis dry matter accumulation, higher net photosynthesis rate and low senescence rate were guaranteed for its high yield and nitrogen agronomic efficiency”
t0“Rice Production”
e1“one-time application of CRU + UI”
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