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短密木霉、咪唑乙烟酸和种植大豆对土壤脲酶活性的影响
引用本文:霍璐阳,李志国,刘晴,刘宇彤,董爱荣.短密木霉、咪唑乙烟酸和种植大豆对土壤脲酶活性的影响[J].东北林业大学学报,2018(3):91-93.
作者姓名:霍璐阳  李志国  刘晴  刘宇彤  董爱荣
作者单位:东北林业大学,哈尔滨,150040
摘    要:采用苯酚钠-次氯酸钠比色法测定土壤脲酶活性,研究了短密木霉(Trichoderma brevicompactum)、大豆(Glycine max)和咪唑乙烟酸质量分数对土壤脲酶活性的影响。结果表明:添加短密木霉、种植大豆和加入咪唑乙烟酸后,土壤脲酶活性均呈现出抑制—恢复—激活的趋势。土壤中加入短密木霉后,40 d时脲酶活性的激活率最高,达到31.13%;种植大豆后,5 d时抑制率最高,达到10.35%,20 d后逐渐恢复到对照组水平。当土壤中咪唑乙烟酸质量分数分别为50、100、150 mg·kg-1时,土壤脲酶活性呈现出抑制—激活的趋势,在5~10 d脲酶活性被显著抑制,抑制率最高时达到16.18%,20 d后呈现激活效应。当土壤中咪唑乙烟酸质量分数为100 mg·kg-1时,30 d时激活率最高,达85.23%。

关 键 词:土壤脲酶  咪唑乙烟酸  短密木霉  大豆  Soil  urease  Imazethapyr  Trichoderma  brevicompactum  Soybean

Effect of Trichoderma brevicompactum,Soybean and Imazethapyr on Soil Urease Activity
Huo Luyang,Li Zhiguo,Liu Qing,Liu Yutong,Dong Airong.Effect of Trichoderma brevicompactum,Soybean and Imazethapyr on Soil Urease Activity[J].Journal of Northeast Forestry University,2018(3):91-93.
Authors:Huo Luyang  Li Zhiguo  Liu Qing  Liu Yutong  Dong Airong
Abstract:We studied the effects of Trichoderma brevicompactum imazethapyr and soybeans on the activities of soil urease,deter-mination of soil urease activity by sodium phenate-sodium hypochlorite colorimetry.The soil urease activity showed inhibi-tion-recovery-activation trend after adding Trichoderma brevicompactum,imazethapyr and planting soybeans in the soil.Af-ter imazapyr was added,the highest activation rate reached 31.13%at 40 d.After planting soybean in the soil,the highest inhibition rate reached 10.35%at5 d,then gradually returned to the level of the control group after 20 d.When the soil contents of imazethapyr were 50,100 and 150 mg/mg, respectively, the soil urease activity showed inhibition-activation trend.Urease activity was significantly inhibited from 5 to 10 d,the highest inhibition rate reached 16.18%,and the acti-vation effect was present after 20 d.When the content of imazethapyr in soil was 100 mg/mg,the highest rate of activation was 85.23%at 30 d.
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