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- W2380309616 abstract "A pot experiment was carried out to study the regularity of CH4 emission from paddy soil. The results showed that there existed obvious diurnal variations of CH4 fluxes. The maximum flux occurred at 4 p.m. or so, and the minimum flux occurred at about 4 a.m. Diurnal variations of CH4 fluxes were mainly influenced by soil temperature at o~10 cm depth. bvious seasonal variations of CH4 fluxes were observed during rice growth period, and crop planting and rice straw application time in previous crop season significantly affected the seasonal variation. A great deal of CH4 emitted to the atmosphere just after rice transplanting, and three emission peaks occurred on the 7th, 40th, 91st days respectively after rice transplanting for treatments with Astragalus sinicus or fallow (rice straw was applied just before rice transplanting) in previous crop season. However, for treatments with wheat or fallow (rice straw was applied before previous crop season) in previous crop season, there were almost no methane emissions until the middle stage of ricegrowing season. Soil drying stimulated the release of soil-entrapped CH4. A CH4 emission peak occurred soon after the soils fell dry when the soils was dry and soft. As soil drying continued, the soil began to crack and CH4 emissions decreased to nil." @default.
- W2380309616 created "2016-06-24" @default.
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- W2380309616 date "1999-01-01" @default.
- W2380309616 modified "2023-09-28" @default.
- W2380309616 title "Study on Regularity of CH_4 Emission From Paddy Soil" @default.
- W2380309616 hasPublicationYear "1999" @default.
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