[Inhibitory effect of pyrazole compound DL-1 on soil nitrification: a preliminary study].
The study with soil incubation test under constant temperature and humidity showed that compared with DCD, DL-1 could significantly inhibit the oxidation of soil ammonium. In the first 3 weeks of incubation, DL-1 had an inhibitory effect of >70% on soil nitrification, with the best effect during 14-28 d of incubation. On the 14, 21, and 28 d of incubation, DL-1 with its dosage being 1.0 % of (NH4)2SO4-N decreased the soil NO3- -N content by 26.23%, 33.27% and 23.31%, respectively, compared with the same dosage of DCD, and by 71.12%, 69.10% and 55.14%, respectively, compared with no inhibitors applied. When the dosage of DL-1 accounted for 2.0% of applied N, soil nitrification was strongly inhibited, and soil NO3- -N content remained at a lower level till to the end (90 d) of incubation.
Sun
Zhimei
Z
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. sunzhm2002@yahoo.com.cn
Liang
Wenju
W
Wu
Zhijie
Z
Zuo
Xiujin
X
Shi
Yunfen
Y
D000641:Ammonia / Q000032:analysis / Q000737:chemistry*; D009566:Nitrates / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010084:Oxidation-Reduction; D011720:Pyrazoles / Q000737:chemistry*; D012987:Soil / Q000032:analysis*
D009566:Nitrates; D011720:Pyrazoles; D012987:Soil; C031280:pyrazole; D000641:Ammonia; D009584:Nitrogen