摘要
Laboratory incubation experiment was conducted to study the effect of lime nitrogen(LN) on transfor-mation of iirea-N in three paddy soils. The results showed that LN had an inhibitory effect on urease activityin these soils especially in the first 5 days, and that in the first 20 days of incubation, the amount of NH-Nderived from urea was lower in the soil with LN than in the soil without LN. While after 30 days the ainountof NH-N was higher in the mature haplic paddy soil developed on Quaternary red clay(MHPS) with LNthan that in the soil without LN. The amonnt of NH_3-N volatilized was decreased in the earlier stage andincreased in the later stage of incubation in the MHPS by the addition of LN.
ＥｆｆｅｃｔｏｆＬｉｍｅＮｉｔｒｏｇｅｎｏｎｔｈｅＴｒａｎｓｆｏｒｍａｔｉｏｎｏｆＵｒｅａｉｎＳｏｉｌｓＨＥＮＩＡＮ－ＺＵ；ＹＵＳＨＥＮ；ＹＥＺＨＩ－ＱＩＡＮ；ＯＵＹＡＮＧＨＡＮＧａｎｄＸＩＯＮＧＪＩＮ－ＳＨＡＮ（ＤｅｐａｒｉｍｅｎｔｏｆＬａｎｄＳｃ...
