Abstract
Cultivation techniques greatly influence crop yield and nutrient dynamics. A field experiment was conducted to investigate the ef-fects of different cultivation techniques on rice yield and the amounts and rates of total nitrogen(N), total phosphorus(P), and potassium(K)runoff losses. The rice cultivar Su 101 was chosen. Three treatments including super high production technique(SP), conventional production technique(CP), and reduced fertilization production techniques(RP)were employed. Compared to CP, SP increased rice yield by11.1%,but RP did not show obvious difference in rice yield. Total runoff depth was 3.9×102mm during rice growth season. Amounts of total N, total P, and total K losses were significantly different among treatments, and were in order of SPCPRP. The rates of NPK losses did not show significant difference between RP and CP, but they were significantly higher than that of SP. The partial factor productivity of nitrogen was RPCPSP. Although SP significantly increased the rice yield, it caused significant increases in total N, total P, and K losses. While CP significantly decreased the NPK loss rates, the partial factor productivity of nitrogen was low. The RP produced rice yield equivalent to that of CP, whereas it significantly decreased the total N, total P, and K losses with increased partial factor productivity of nitrogen.
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Claims 10
Claim · model-written summary
SP increased rice yield by 11.1% relative to CP.
- Taxon
- rice
Oryza sativae0 - Treatment
- SPe0
- Outcome
- rice yielde0
- Direction
- increasede0
- Value
- 11.1%e0
- Comparator
- CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to CP, SP increased rice yield by11.1%”
Claim · model-written summary
RP showed no obvious difference from CP in rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- RPe0
- Outcome
- rice yielde0
- Direction
- did not show obvious differencee0
- Comparator
- CPe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RP did not show obvious difference in rice yield”
e1“Compared to CP, SP increased rice yield by11.1%”
Claim · model-written summary
Total nitrogen, phosphorus and potassium runoff loss amounts differed significantly among treatments.
Not reportedTaxon
Verbatim
e0“Amounts of total N, total P, and total K losses were significantly different among treatments”
Claim · model-written summary
NPK runoff loss rates did not differ significantly between RP and CP.
- Taxon
- riceOryza sativae1
- Treatment
- RPe0
- Outcome
- rates of NPK lossese0
- Direction
- did not show significant differencee0
- Comparator
- CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rates of NPK losses did not show significant difference between RP and CP”
e1“rice yield and the amounts and rates of total nitrogen(N), total phosphorus(P), and potassium(K)runoff losses”
Claim · model-written summary
NPK runoff loss rates under RP were significantly higher than under SP.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rates of NPK losses did not show significant difference between RP and CP, but they were significantly higher than that of SP.”
e1“rice yield and the amounts and rates of total nitrogen(N), total phosphorus(P), and potassium(K)runoff losses”
Claim · model-written summary
SP significantly increased total nitrogen, phosphorus and potassium losses.
- Taxon
- riceOryza sativae0
- Treatment
- SPe0
- Outcome
- total N, total P, and K lossese0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SP significantly increased the rice yield, it caused significant increases in total N, total P, and K losses”
Claim · model-written summary
RP significantly decreased total nitrogen, phosphorus and potassium losses relative to CP.
- Taxon
- riceOryza sativae0
- Treatment
- RPe0
- Outcome
- total N, total P, and K lossese0
- Direction
- decreasede0
- Comparator
- CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RP produced rice yield equivalent to that of CP, whereas it significantly decreased the total N, total P, and K losses with increased partial factor productivity of nitrogen.”
Claim · model-written summary
RP increased partial factor productivity of nitrogen.
- Taxon
- riceOryza sativae0
- Treatment
- RPe0
- Outcome
- partial factor productivity of nitrogene0
- Direction
- increasede0
- Comparator
- CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RP produced rice yield equivalent to that of CP, whereas it significantly decreased the total N, total P, and K losses with increased partial factor productivity of nitrogen.”
Claim · model-written summary
Partial factor productivity of nitrogen was low under CP.
Not reportedTaxon
Verbatim
e0“While CP significantly decreased the NPK loss rates, the partial factor productivity of nitrogen was low.”
Claim · model-written summary
CP significantly decreased NPK loss rates.
Not reportedTaxonComparator
Verbatim
e0“While CP significantly decreased the NPK loss rates, the partial factor productivity of nitrogen was low.”
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