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- W2392117059 abstract "【Objective】To study the effect of no-tillage on supply characteristics of soil inorganic nitrogen and rice yield in paddy-upland rotation system.【Method】A long-term(2007-2010) experiment was conducted the field trail was designed to have two treatments with four replicates: No-tillage;conventional tillage,and the rice cultivar Wandao 68 was used as material.【Result】The results showed that NH4+-N content in arable layer soil was higher at rice early growth stage and lower at the middle and late growth stages than conventional tillage.Compared to conventional tillage,the NO3——N content in 0-10 cm soil layer was increased significantly while NO3——N content in 10-20 cm soil layer of main growth stage was decreased with no-tillage.That could help reduce the leaching loss of NO3——N in soil.The inorganic nitrogen of no-tillage was lower than that of conventional tillage in whole arable layer during rice season.No-tillage enriched soil organic matter and total nitrogen in the surface soil layer.Both the soil organic matter and total N content of no-tillage were significantly higher in 0-10 cm layer and lower in 10-20 cm layer than that of conventional tillage.The soil bulk density in 0-20 cm layer was increased by 3.06%-6.25% compared with conventional tillage.The yield results indicated that no-tillage treatment decreased rice yield notably by 4.11-7.70%.【Conclusion】In comparison to conventional tillage,no-tillage treatment decreased NH4+-N content since elongating and resulted in reducing absorption of nitrogen in plants at elongating and heading and the ratio of productive tillers to total tillers significantly.This was the main reason for the reduction of rice yield with no-tillage." @default.
- W2392117059 created "2016-06-24" @default.
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- W2392117059 date "2013-01-01" @default.
- W2392117059 modified "2023-09-23" @default.
- W2392117059 title "Effects of No-Tillage on Supply Characteristics of Soil Inorganic Nitrogen and Rice Yield" @default.
- W2392117059 hasPublicationYear "2013" @default.
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