Abstract
Abstract Water shortage is increasingly limiting the luxury use of water in rice cultivation. In this study, non‐flooded mulching cultivation of rice only consumed a fraction of the water that was needed for traditional flooded cultivation and largely maintained the grain yield. We also investigated the growth and development of rice plants and examined grain yield formation when rice was subjected to non‐flooded mulching cultivation. One indica hybrid rice combination was grown in a field experiment and three cultivation methods, traditional flooding (TF), non‐flooded straw mulching cultivation (SM) and non‐flooded plastic mulching cultivation (PM), were conducted during the whole season. Grain yield showed that there was no significant difference between SM and TF rice, but the grain yield of SM cultivation was significantly higher than that of PM. The tiller numbers were inhibited in the early stage under non‐flooded mulching cultivation, but the situation was reversed at the later period. Both SM and PM rice reduced dry matter accumulation of shoot, but increased root dry weight, enhanced the remobilization of assimilates from stems to grains and increased the harvest index. During the middle and later grain filling period, mulched plants showed a faster decrease in chlorophyll concentrations, photosynthetic rates of flag leaves and root activity than TF rice, indicating that non‐flooded mulching cultivation enhanced plant senescence. In comparison, SM treatment produced higher grain yield and, more dry matter accumulation and panicle numbers than the PM treatment. The overall results suggest that high yield of non‐flooded mulching cultivation of rice can be achieved with much improved irrigational water use efficiency.
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Claims 12
Claim · model-written summary
Non-flooded mulching used a fraction of the water required by flooding.
- Taxon
- rice
Oryza sativae0 - Treatment
- non‐flooded mulching cultivatione0
- Outcome
- watere0
- Direction
- a fractione0
- Comparator
- traditional flooded cultivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“non‐flooded mulching cultivation of rice only consumed a fraction of the water that was needed for traditional flooded cultivation”
Claim · model-written summary
Straw mulching and traditional flooding had no significant yield difference.
- Taxon
- riceOryza sativae0
- Treatment
- SMe0
- Outcome
- no significant differencee0
- Direction
- no significant differencee0
- Comparator
- TFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant difference between SM and TF rice”
Claim · model-written summary
Straw mulching produced significantly higher yield than plastic mulching.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grain yield of SM cultivation was significantly higher than that of PM”
t0“Rice”
Claim · model-written summary
Non-flooded mulching inhibited early tiller numbers.
- Taxon
- RiceOryza sativat0
- Organ / stage
- early stagee0
- Treatment
- non‐flooded mulching cultivatione0
- Outcome
- tiller numberse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tiller numbers were inhibited in the early stage under non‐flooded mulching cultivation”
t0“Rice”
Claim · model-written summary
Non-flooded mulching later reversed its tiller suppression.
- Taxon
- RiceOryza sativat0
- Organ / stage
- later periode0
- Treatment
- non‐flooded mulching cultivatione0
- Outcome
- tiller numberse0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tiller numbers were inhibited in the early stage under non‐flooded mulching cultivation, but the situation was reversed at the later period”
t0“Rice”
Claim · model-written summary
Straw and plastic mulching reduced shoot dry matter accumulation.
- Taxon
- riceOryza sativae0
- Treatment
- SM and PMe0
- Outcome
- dry matter accumulation of shoote0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both SM and PM rice reduced dry matter accumulation of shoot”
Claim · model-written summary
Straw and plastic mulching increased root dry weight.
- Taxon
- riceOryza sativae0
- Treatment
- SM and PMe0
- Outcome
- root dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both SM and PM rice reduced dry matter accumulation of shoot, but increased root dry weight”
Claim · model-written summary
Straw and plastic mulching enhanced assimilate remobilization from stems to grains.
- Taxon
- riceOryza sativae0
- Treatment
- SM and PMe0
- Outcome
- remobilization of assimilates from stems to grainse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both SM and PM rice reduced dry matter accumulation of shoot, but increased root dry weight, enhanced the remobilization of assimilates from stems to grains”
Claim · model-written summary
Straw and plastic mulching increased harvest index.
- Taxon
- riceOryza sativae0
- Treatment
- SM and PMe0
- Outcome
- harvest indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both SM and PM rice reduced dry matter accumulation of shoot, but increased root dry weight, enhanced the remobilization of assimilates from stems to grains and increased the harvest index”
Claim · model-written summary
Mulched plants showed a faster decline in chlorophyll concentration and flag-leaf photosynthesis during grain filling.
- Taxon
- RiceOryza sativat0
- Treatment
- mulched plantse0
- Outcome
- chlorophyll concentrations, photosynthetic rates of flag leaves and root activitye0
- Direction
- faster decreasee0
- Comparator
- TF ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched plants showed a faster decrease in chlorophyll concentrations, photosynthetic rates of flag leaves and root activity than TF rice”
t0“Rice”
Claim · model-written summary
Straw mulching produced more dry matter and panicles than plastic mulching.
- Taxon
- RiceOryza sativat0
- Treatment
- SM treatmente0
- Outcome
- dry matter accumulation and panicle numberse0
- Direction
- moree0
- Comparator
- PM treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SM treatment produced higher grain yield and, more dry matter accumulation and panicle numbers than the PM treatment”
t0“Rice”
Claim · model-written summary
The authors conclude non-flooded mulching can attain high rice yield with improved irrigation water use efficiency.
- Taxon
- riceOryza sativae0
- Treatment
- non‐flooded mulching cultivatione0
- Outcome
- high yielde0
- Qualifier
- much improved irrigational water use efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high yield of non‐flooded mulching cultivation of rice can be achieved with much improved irrigational water use efficiency”
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See all 327 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.