Abstract
In order to clarify the effects of different water-saving irrigation modes on hydrothermal changes in paddy fields in the black soil zone, field experiments were set up in paddy fields in the standard black soil zone in 2023 and 2024 to investigate the changing patterns of water changes, paddy field temperature changes, rice plant height, number of tillers, SPAD, and yield under the shallow-wet irrigation mode (QS), the shallow-wet-dry irrigation mode (QSG), and the deep-wet-dry irrigation mode (SSG). The results showed that (1) controlling the lower irrigation limit and increasing the upper irrigation limit improved rainfall utilisation, and the QSG mode irrigation volume was reduced by 10.27% to 44.52% compared with the QS mode irrigation volume and SSG mode irrigation volume. Increasing the upper limit of irrigation and controlling the lower limit of irrigation helped to increase the canopy temperature, water layer temperature and soil layer temperature of rice. (2) In terms of rice growth, lowering the upper irrigation limit and controlling the lower irrigation limit inhibited the growth of rice plant height. Controlling the lower limit of irrigation would increase the effective number of rice tillers and improve the stem tiller spike formation rate, but it would reduce the SPAD and dry matter accumulations. Yield in QSG mode was significantly higher than that in QS and SSG modes, by 4.12% to 4.65% and 18.42% to 14.69%, respectively. (3) Evaluating the integrated hydrothermal changes and rice growth conditions according to the TOPSIS model, the QSG model was superior to the SSG model, and finally the QS model.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 10
Claim · model-written summary
QSG reduced irrigation volume relative to QS and SSG by 10.27% to 44.52%.
- Taxon
- rice
Oryza sativat0 - Treatment
- QSG modee0
- Outcome
- irrigation volumee0
- Direction
- reducede0
- Value
- 10.27% to 44.52%e0
- Comparator
- QS mode irrigation volume and SSG mode irrigation volumee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“QSG mode irrigation volume was reduced by 10.27% to 44.52% compared with the QS mode irrigation volume and SSG mode irrigation volume”
Claim · model-written summary
Changing irrigation limits increased rice canopy, water layer and soil layer temperatures.
- Taxon
- riceOryza sativat0
- Treatment
- Increasing the upper limit of irrigation and controlling the lower limit of irrigatione0
- Outcome
- canopy temperature, water layer temperature and soil layer temperaturee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Increasing the upper limit of irrigation and controlling the lower limit of irrigation helped to increase the canopy temperature, water layer temperature and soil layer temperature of rice”
Claim · model-written summary
Lowering the upper irrigation limit while controlling the lower limit inhibited rice plant height.
- Taxon
- riceOryza sativat0
- Treatment
- lowering the upper irrigation limit and controlling the lower irrigation limite0
- Outcome
- rice plant heighte0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“lowering the upper irrigation limit and controlling the lower irrigation limit inhibited the growth of rice plant height”
Claim · model-written summary
Controlling the lower irrigation limit increased effective number of rice tillers.
- Taxon
- riceOryza sativat0
- Treatment
- Controlling the lower limit of irrigatione0
- Outcome
- effective number of rice tillerse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Controlling the lower limit of irrigation would increase the effective number of rice tillers and improve the stem tiller spike formation rate, but it would reduce the SPAD and dry matter accumulations”
Claim · model-written summary
Controlling the lower irrigation limit improved stem tiller spike formation rate.
- Taxon
- riceOryza sativat0
- Treatment
- Controlling the lower limit of irrigatione0
- Outcome
- stem tiller spike formation ratee0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Controlling the lower limit of irrigation would increase the effective number of rice tillers and improve the stem tiller spike formation rate, but it would reduce the SPAD and dry matter accumulations”
Claim · model-written summary
Controlling the lower irrigation limit reduced SPAD.
- Taxon
- riceOryza sativat0
- Treatment
- Controlling the lower limit of irrigatione0
- Outcome
- SPADe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Controlling the lower limit of irrigation would increase the effective number of rice tillers and improve the stem tiller spike formation rate, but it would reduce the SPAD and dry matter accumulations”
Claim · model-written summary
Controlling the lower irrigation limit reduced dry matter accumulations.
- Taxon
- riceOryza sativat0
- Treatment
- Controlling the lower limit of irrigatione0
- Outcome
- dry matter accumulationse0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Controlling the lower limit of irrigation would increase the effective number of rice tillers and improve the stem tiller spike formation rate, but it would reduce the SPAD and dry matter accumulations”
Claim · model-written summary
QSG rice yield was significantly higher than QS by 4.12% to 4.65%.
- Taxon
- riceOryza sativat0
- Treatment
- QSG modee0
- Outcome
- Yielde0
- Direction
- highere0
- Value
- 4.12% to 4.65%e0
- Comparator
- QSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Yield in QSG mode was significantly higher than that in QS and SSG modes, by 4.12% to 4.65% and 18.42% to 14.69%, respectively”
Claim · model-written summary
QSG rice yield was significantly higher than SSG by 18.42% to 14.69%.
- Taxon
- riceOryza sativat0
- Treatment
- QSG modee0
- Outcome
- Yielde0
- Direction
- highere0
- Value
- 18.42% to 14.69%e0
- Comparator
- SSGe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Yield in QSG mode was significantly higher than that in QS and SSG modes, by 4.12% to 4.65% and 18.42% to 14.69%, respectively”
Claim · model-written summary
TOPSIS ranked QSG above SSG and QS for integrated hydrothermal and rice growth conditions.
- Taxon
- riceOryza sativat0
- Outcome
- integrated hydrothermal changes and rice growth conditionse0
- Direction
- superiore0
- Comparator
- SSG modele0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Evaluating the integrated hydrothermal changes and rice growth conditions according to the TOPSIS model, the QSG model was superior to the SSG model, and finally the QS model”
The same questions in other papers
irrigation · physiology: pigments · Oryza sativa (rice)Positive and negative results
20 papers in the same direction as this paper · 6 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
25 papers more in this group
See all 29 papers →irrigation · growth · Oryza sativa (rice)Positive and negative results
221 papers in the same direction as this paper · 62 in the opposite direction · 7 reporting no difference from an alternative
- negative
- negative
- negative
287 papers more in this group
See all 291 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
- negative
- negative
- negative
1,167 papers more in this group
See all 1,171 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.