ZHANG Xin, WU Si, GAO Fei, et al. Effects of Exogenous PAEs Addition on Tobacco Growth and Its Accumulation Characteristics in Soil-Tobacco System[J]. 2019, 33(3): 378-384.
DOI:
ZHANG Xin, WU Si, GAO Fei, et al. Effects of Exogenous PAEs Addition on Tobacco Growth and Its Accumulation Characteristics in Soil-Tobacco System[J]. 2019, 33(3): 378-384. DOI: 10.13870/j.cnki.stbcxb.2019.03.055.
Effects of Exogenous PAEs Addition on Tobacco Growth and Its Accumulation Characteristics in Soil-Tobacco System
DBP/DEHP was added exogenously with the concentrations of 0
20
50
100
200 mg/kg respectively to study the effect of PAEs on tobacco growth and its accumulation characteristics in soil-tobacco systems. The results showed that the addition of exogenous DBP/DEHP had no significant effect on the aboveground biomass and stem diameter of tobacco
and the plant height of tobacco showed different trends with the concentration of exogenous DBP/DEHP. The plant height of tobacco remained unchanged in yellow soil
decreased in yellow brown soil
and increased in red soil. The root activity of yellow soil decreased with the increase of exogenous DBP/DEHP concentration
while there was no significant change in yellow brown soil. DBP/DEHP concentration had a significant effect on tobacco antioxidant ezyme activity in some soils
but had no effect on soil denydrogenase and urease activity. With the increase of the concentrations of PAEs
the DBP/DEHP contents in the soil increased
with the highest increase for the DBP contents in the yellow brown soil
which reached its 3.56 times that of CK under the 200 mg/kg DBP. The concentrations of DEHP in yellow brown soil and red soil increased significantly
which were 27.47 times and 27.34 times of CK
respectively when adding 200 mg/kg DEHP. Compared with CK
most tobacco leaves and roots were improved in DBP/DEHP with different degrees. With the increase of the concentration of exogenous DBP/DEHP
the accumulation of DBP/DEHP in soil and tobacco leaves will be promoted to some extent.
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references
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