Abstract
Upland rice and dry-cultivated paddy rice have been attracted more and more attention because of limited water re- sources in China, however, there is little information available on effect of cultivation methods on P absorption and use efficiency of upland rice and paddy rice. The objective of this study was to evaluate the difference between upland rice cultivar Zhonghan 3 (japonica) and paddy rice cultivar Wuxiangjing 99-8 (japonica) under three cultivation methods of moist cultivation (MC, con- trol), plastic film mulching cultivation (PFMC), and bare cultivation (BC). Compared with the MC, the grain yield was signifi- cantly lower under PFMC for upland rice, but no significant difference between PFMC and MC for paddy rice, and significantly reduced under BC for both upland rice and paddy rice. P concentration and the amount of P absorption in plants under PFMC and MC were lower, whereas P concentration decreased more slowly from heading to maturity stage under PFMC and BC. The pro- portion of P in leaves was lower, whereas significantly higher in culms and sheaths for upland rice, and was significantly higher under PFMC and significantly lower under BC for paddy rice under dry cultivation than under MC. P use efficiency of matter production (PUEp) was significantly greater under dry cultivation than under MC after heading stage and P use efficiency of grain yield production (PUEg) was lower under PFMC and higher under BC than under MC. Compared with Wuxiangjing 99-8, Zhonghan 3 exhibited lower P concentration and slower decrease in P concentration, smaller P accumulation in plants at later growth stage, higher proportion of P in leaves and grains, greater PUEp, higher PUEg and P harvest index (PHI), no difference at maturity and lower change range of the proportion of P in plants and PUEg production under three cultivations. The amount of P absorption was very significantly positively correlated with adventitious root numbers, root weight, and grain yield (r1 = 0.8227**, r2 = 0.7928**, r3 = 0.7344**). The results suggest that the effect of dry cultivation on the absorption and use efficiency of P varies largely with the cultivation methods and variety types, and dry cultivation could increase PUEp.
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Claims 20
Claim · model-written summary
PFMC significantly lowered upland rice grain yield relative to MC.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Compared with the MC, the grain yield was signifi- cantly lower under PFMC for upland rice”
Claim · model-written summary
PFMC did not significantly differ from MC in paddy rice grain yield.
- Taxon
- rice
Oryza sativat0 - Treatment
- PFMCe0
- Outcome
- differencee0
- Direction
- no significant differencee0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“no significant difference between PFMC and MC for paddy rice”
Claim · model-written summary
BC significantly reduced grain yield in both rice types.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Compared with the MC, the grain yield was signifi- cantly lower under PFMC for upland rice, but no significant difference between PFMC and MC for paddy rice, and significantly reduced under BC for both upland rice and paddy rice”
Claim · model-written summary
Plant phosphorus concentration was lower under PFMC and MC.
- Taxon
- riceOryza sativat0
- Treatment
- PFMC and MCe0
- Outcome
- P concentratione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P concentration and the amount of P absorption in plants under PFMC and MC were lower”
Claim · model-written summary
Plant phosphorus absorption was lower under PFMC and MC.
- Taxon
- riceOryza sativat0
- Treatment
- PFMC and MCe0
- Outcome
- amount of P absorption in plantse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P concentration and the amount of P absorption in plants under PFMC and MC were lower”
Claim · model-written summary
Phosphorus concentration decreased more slowly from heading to maturity under PFMC and BC.
- Taxon
- riceOryza sativat0
- Organ / stage
- heading to maturity stagee0
- Treatment
- PFMC and BCe0
- Outcome
- P concentratione0
- Direction
- decreased more slowlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P concentration decreased more slowly from heading to maturity stage under PFMC and BC”
Claim · model-written summary
Dry cultivation lowered the proportion of phosphorus in upland rice leaves.
- Taxon
- riceOryza sativat0
- Treatment
- dry cultivatione0
- Outcome
- pro- portion of P in leavese0
- Direction
- lowere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“The pro- portion of P in leaves was lower, whereas significantly higher in culms and sheaths for upland rice, and was significantly higher under PFMC and significantly lower under BC for paddy rice under dry cultivation than under MC”
Claim · model-written summary
Dry cultivation significantly raised the proportion of phosphorus in upland rice culms and sheaths.
- Taxon
- riceOryza sativat0
- Treatment
- dry cultivatione0
- Outcome
- culms and sheathse0
- Direction
- significantly highere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“significantly higher in culms and sheaths for upland rice, and was significantly higher under PFMC and significantly lower under BC for paddy rice under dry cultivation than under MC”
Claim · model-written summary
PFMC significantly raised the phosphorus proportion in paddy rice.
- Taxon
- riceOryza sativat0
- Treatment
- PFMCe0
- Outcome
- pro- portion of Pe0
- Direction
- significantly highere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“The pro- portion of P in leaves was lower, whereas significantly higher in culms and sheaths for upland rice, and was significantly higher under PFMC and significantly lower under BC for paddy rice under dry cultivation than under MC”
Claim · model-written summary
BC significantly lowered the phosphorus proportion in paddy rice.
- Taxon
- riceOryza sativat0
- Treatment
- BCe0
- Outcome
- pro- portion of Pe0
- Direction
- significantly lowere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“The pro- portion of P in leaves was lower, whereas significantly higher in culms and sheaths for upland rice, and was significantly higher under PFMC and significantly lower under BC for paddy rice under dry cultivation than under MC”
Claim · model-written summary
Dry cultivation significantly increased PUEp after heading.
- Taxon
- riceOryza sativat0
- Treatment
- dry cultivatione0
- Outcome
- P use efficiency of matter production (PUEp)e0
- Direction
- greatere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P use efficiency of matter production (PUEp) was significantly greater under dry cultivation than under MC after heading stage”
Claim · model-written summary
PFMC lowered PUEg compared with MC.
- Taxon
- riceOryza sativat0
- Treatment
- PFMCe0
- Outcome
- P use efficiency of grain yield production (PUEg)e0
- Direction
- lowere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P use efficiency of grain yield production (PUEg) was lower under PFMC and higher under BC than under MC”
Claim · model-written summary
BC raised PUEg compared with MC.
- Taxon
- riceOryza sativat0
- Treatment
- BCe0
- Outcome
- P use efficiency of grain yield production (PUEg)e0
- Direction
- highere0
- Comparator
- MCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“P use efficiency of grain yield production (PUEg) was lower under PFMC and higher under BC than under MC”
Claim · model-written summary
Zhonghan 3 had lower phosphorus concentration and a slower decrease than Wuxiangjing 99-8.
- Taxon
- riceOryza sativat0
- Material
- Zhonghan 3e0
- Outcome
- P concentratione0
- Direction
- lowere0
- Comparator
- Wuxiangjing 99-8e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Compared with Wuxiangjing 99-8, Zhonghan 3 exhibited lower P concentration and slower decrease in P concentration”
Claim · model-written summary
Zhonghan 3 had smaller late-stage phosphorus accumulation than Wuxiangjing 99-8.
- Taxon
- riceOryza sativat0
- Material
- Zhonghan 3e0
- Outcome
- P accumulation in plantse0
- Direction
- smallere0
- Comparator
- Wuxiangjing 99-8e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Compared with Wuxiangjing 99-8, Zhonghan 3 exhibited lower P concentration and slower decrease in P concentration, smaller P accumulation in plants at later growth stage”
Claim · model-written summary
Zhonghan 3 had higher phosphorus proportions in leaves and grains.
- Taxon
- riceOryza sativat0
- Material
- Zhonghan 3e0
- Outcome
- proportion of P in leaves and grainse0
- Direction
- highere0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Zhonghan 3 exhibited lower P concentration and slower decrease in P concentration, smaller P accumulation in plants at later growth stage, higher proportion of P in leaves and grains”
Claim · model-written summary
Zhonghan 3 had greater PUEp and higher PUEg and PHI.
- Taxon
- riceOryza sativat0
- Material
- Zhonghan 3e0
- Outcome
- PUEp, higher PUEg and P harvest index (PHI)e0
- Direction
- highere0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“Compared with Wuxiangjing 99-8, Zhonghan 3 exhibited lower P concentration and slower decrease in P concentration, smaller P accumulation in plants at later growth stage, higher proportion of P in leaves and grains, greater PUEp, higher PUEg and P harvest index (PHI)”
Claim · model-written summary
Zhonghan 3 had a lower change range in phosphorus proportion and PUEg among cultivation methods.
- Taxon
- riceOryza sativat0
- Outcome
- change range of the proportion of P in plants and PUEg productione0
- Direction
- lowere0
Not reportedMaterialTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“lower change range of the proportion of P in plants and PUEg production under three cultivations”
Claim · model-written summary
Phosphorus absorption correlated positively with root traits and grain yield.
- Taxon
- riceOryza sativat0
- Organ / stage
- adventitious roote0
- Outcome
- amount of P absorptione0
- Direction
- positively correlatede0
- Value
- r1 = 0.8227**, r2 = 0.7928**, r3 = 0.7344**e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“The amount of P absorption was very significantly positively correlated with adventitious root numbers, root weight, and grain yield (r1 = 0.8227**, r2 = 0.7928**, r3 = 0.7344**)”
Claim · model-written summary
Dry cultivation could increase PUEp.
- Taxon
- riceOryza sativat0
- Treatment
- dry cultivatione0
- Outcome
- PUEpe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice and Paddy Rice”
e0“dry cultivation could increase PUEp”
The same questions in other papers
mulching · yield · Oryza sativa (rice)Results differ
19 papers in the same direction as this paper · 106 in the opposite direction
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