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Effect of Cl ̄ on Behavior of Fertilizer Nitrogen, Nnmberof Microorganisms and Enzyme Activities in SoilsEnglish Full Text

SHI WEI-YONG, CHENG MEI-ZI, LI CHUN-JIU and MA GUO-RUI(Dept. of Soil Sci. and Plant Nutrition, Zhejiang Agricultural University, Hangzhou 310029 (China))

Abstract: Pot experiments were conducted to study the effect of Cl ̄- on transformation of fertilizer N, number ofmicroorganisms and enzyme activities in soils. It is indicated that Cl ̄- did not show significant influenceon total number of bacteria, actinomyces and fungi, but significantly reduced the number of nitrosobacteria,which led to decrease of NO content in the soil. Application of Cl ̄- to soil could significantly enhance theactivities of phosphatase and urease in the coastal saline soil and orthic aquisols. In hilly red soil, however,the application of Cl ̄- at the rate of 500-1000 mg Cl ̄- kg ̄(-1) soil significantly decreased the activity of thetwo enzymes mentioned above.
  • Series:

    (D) Agriculture

  • Subject:

    Fundamental Science of Agriculture; Agronomy

  • Classification Code:

    S153

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