Search Results - CHEN Li-jun

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  1. 1
    Effects of long-term fertilization on glycosidase and phosphomonoesterase activities in black soil

    Effects of long-term fertilization on glycosidase and phosphomonoesterase activities in black soil by MA Xing-zhu, CHEN Li-jun, WU Zhi-jie, ZHANG Li-li

    Published 2008-09-01

    Surface soil (0-20 cm) samples were collected from a 25 years fertilization experimental field to study the effects of different fertilization practices on the activities of glycosidase (α-, β-glucosidase and α-, β-galactosidase) and acid-and alkaline phosphomonoesterase in the black soil. Comparing...

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  2. 2
    Kinetics of soil urease affected by phenyl phosphorodiamidate

    Kinetics of soil urease affected by phenyl phosphorodiamidate by JUAN Ying-hua, CHEN Li-jun, WU Zhi-jie, MA Xing-zhu

    Published 2008-07-01

    By simulation, the effects of the inhibitor phenyl phosphorodiamidate (PPD) on the kinetics of urease were studied in the main 4 soils of Northeast China at 10, 20℃ and 30 ℃. The results show that effects of PPD on kinetic parameters of soil urease were significantly influenced by soil fertility, in...

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  3. 3
    Kinetics of soil β-glucosidase under long-term fertilization

    Kinetics of soil β-glucosidase under long-term fertilization by MA Xing-zhu, CHEN Li-jun, WU Zhi-jie, ZHANG Yu-lan, FANG Na-na

    Published 2008-09-01

    The kinetic characteristics of β-glucosidase were studied in a black soil and a brown soil with long-term fertilization. It was found that the enzymatic reaction of soil β-glucosidase followed first-order kinetics. In the black soil, organic manure fertilization had a greater effect on the kinetic p...

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