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- W2387446879 abstract "The methane emission flux was determined in paddy field of early and late rice under translating and direct sowing patterns, respectively, using the static box sampling technique in 2005 and 2006. The results analyzed on difference between the direct sowing rice (DSR) and the translating rice (TR) patterns were shown that, the methane emission under DSR and TR presented the same daily variation and seasonal law. The methane flux under DSR was significantly lower but the amount of methane emission under DSR was significantly greater than that under TR based on rice growth stage in paddy field (except of seedling field). The main reasons were as follows: ⅰ) days of rice growing under DSR in paddy field was longer than that under TR; ⅱ) seedlings per area under DSR were greater than that under of TR; ⅲ) root activity under DSR was higher than that under TR, especially at the rice middle and late stages. Further analysis on the correlation showed that methane emission was positive with activity and absorbing ability of rice root. The root activity affected methane emission over the whole rice growth season and there was significant correlation (P0.05) beween the root activity and methane emission under TR, but not significant correlation under DSR. There was positive correlation between the methane emission flux and root absorbing ability under DSR, while root absorbing ability affected methane emission only at the rice middle and late growth stages under TR. Therefore, rice root activity is one of the key factors which affect methane emission from paddy soil, and it is necessary to reduce the methane emission of DSR by controlling root activity with the area of direct sowing rice increasing in southern China." @default.
- W2387446879 created "2016-06-24" @default.
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- W2387446879 date "2008-01-01" @default.
- W2387446879 modified "2023-09-24" @default.
- W2387446879 title "Impact of Rice Cultivation Patterns on Methane Emission from Paddy Field" @default.
- W2387446879 hasPublicationYear "2008" @default.
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