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• W4313648522 endingPage "161429" @default.
• W4313648522 startingPage "161429" @default.
• W4313648522 abstract "Abundant evidence has demonstrated the feasibility of reducing phosphorus (P) input to face diminishing phosphate rock resources and deteriorating environmental quality in double-cropping paddy. However, the sustainability of reduced P input in the context of maintaining productivity and P efficient utilization is not yet clear. Herein, an 8-year (2013−2021) field-based database was built to explore the effects of reduced P input on rice productivity and the soil-plant P trade-off in double-cropping paddy. In the early and late rice seasons, compared with conventional P fertilization (early rice, 90 kg hm−2; late rice, 60 kg hm−2), the average yield of reduced 10 % P treatment increased by 4.3 % and 2.1 %, respectively; reduced 10–30 % P treatments increased average P use efficiency by 17.1–18.4 % and 14.0–17.2 %, decreased average total P runoff loss by 14.9–33.2 % and 20.8–36.4 %, and decreased average total P leaching loss by 18.5–49.0 % and 24.0–46.1 %, respectively. Compared with conventional fertilization, reduced P fertilizer input by 10 % significantly increased the content of the soil labile-P fraction while reducing that of the soil stable-P fraction. Soil ligand-P and exchangeable-P content decreased with the gradient reduction of P fertilizer input (10–30 %). The main predictors of the change in rice yield and plant P uptake were soil ligand-P and exchangeable-P content, respectively. The dominant predictor of both the P runoff loss and the P activation coefficient was the inorganic P content extracted by NaHCO3. These findings suggest that reduced P input by 10 % could maintain rice productivity and P use efficiency in the double-cropping paddy, and the transformations between soil P components and increases in P bioavailability may be the key drivers maintaining rice productivity and P utilization under the context of reduced P loading." @default.
• W4313648522 created "2023-01-07" @default.
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• W4313648522 date "2023-03-01" @default.
• W4313648522 modified "2023-10-13" @default.
• W4313648522 title "The effectiveness of eight-years phosphorus reducing inputs on double cropping paddy: Insights into productivity and soil-plant phosphorus trade-off" @default.
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• W4313648522 doi "https://doi.org/10.1016/j.scitotenv.2023.161429" @default.
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• W4313648522 hasPublicationYear "2023" @default.
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