水土保持学报2018，Vol.32Issue(2)：283-289,7.DOI:10.13870/j.cnki.stbcxb.2018.02.042
含土霉素土壤添加不同基质后对玉米生理特性的影响
Effects of Adding Different Substrates on Physiological Traits of Maize in a Oxytetracycline Contaminated Soil
摘要
Abstract
A kind of tetracyclines-oxytetracycline was used as target pollutant to analyze the potential influences of veterinary antibiotics pollution on maize growth.A potted maize experiment was conducted to study the influences of oxytetracycline-contained soils on the biomass,photosynthesis parameters and antioxidant enzymes during the growth stage of maize in the soils with different substrates:microbial inoculants (JF) mushroom bran (JK),wormcast (QY),and biomass charcoal (S) etc.with the single and combined application.The results showed that oxytetracycline had a greater inhibiting effect on the roots of maize than on the aboveground.The length and dry weight of maize roots under the treatments of JK,microbial inoculants+ wormcast (JQ),microbial inoculants+ biomass charcoal (JS) increased by 9.1％,9.4％,13.7％ and 66.46％,183.4％,46.72％ respectively than the OTC treatment.The addition of substrates reduced the inhibiting effect of Oxytetracycline on the net photosynthetic rate,stomatal conductance and transpiration rate of maize effectively.JK increased the chlorophyll contents in three stages of maize,the increases in seedling,jointing and maturation stages were 7.78％,33.33％ and 12.03％ respetively.The CAT and POD activities under JS increased by about 48％ and 43.2％ than the OTC.The addition of S,JQ and JK reduced the proline contents by 59％,16.5％ and 55.4％ respectively than the OTC in the seeding,jointing and maturation stages.In general,doxycycline had an obvious inhibiting effect on maize growth,but adding different substrates could alleviate the adverse effects on maize's physiological traits.The addition of JK,JS,S and JQ had significant positive effect on maize's growth.These findings provided the theoretical basis for screening the substrates that could reduce antibiotics' influences on maize's growth,as well as for the assessment of oxytetracycline risk to crops.关键词
土霉素/玉米/不同基质/生长Key words
oxytetracycline/maize/different substrates/growth分类
农业科技引用本文复制引用
熊华烨,秦俊梅,马浩天..含土霉素土壤添加不同基质后对玉米生理特性的影响[J].水土保持学报,2018,32(2):283-289,7.基金项目
山西省科技攻关项目(20140311008-4) （20140311008-4）
