Effects of N Fertilizer on Pb Accumulation and POD Enzyme Activity of Wheat

Abstract

Abstract: Aim at the increasingly serious soil Pb pollution ，the effects of application of urea, NH4HCO3 on available Pb in soil, Pb absorbed by wheat and POD enzyme activity in wheat were investigated by methods of pot culture tests . The results indicated that two kinds fertilizer all improved the soil available Pb and Pb accumulation in root of wheat. The low dosage of N fertilizer （0.1~0.3g／kg）promoted biomass of wheat and the higher dosage of applying fertilizers （0.5~0.7g／kg）prohibited the growth of the wheat .Applying N fertilizers decreased the Pb accumulation in up part of wheat. While there was no obvious correlation between soil available Pb and Pb contend adsorbed by wheat . The N fertilizer can effectively alleviate negative influence of Pb on wheat seedlings and can inhibit the activity of POD enzyme in wheat. Between urea and NH4HCO3, the low dosage of urea fertilizer was better than NH4HCO3.

CLC Number:

S153

Xu Guoming, Zhang Guiyin, Chu Zhudong, Xue Peiying, Zhang Taohong, Bi Shuqin. Effects of N Fertilizer on Pb Accumulation and POD Enzyme Activity of Wheat[J]. Chinese Agricultural Science Bulletin, 2007, 23(6): 572-572.

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