ACTA AGRICULTURAE BOREALI-SINICA ›› 2010, Vol. 25 ›› Issue (3): 165-169. doi: 10.7668/hbnxb.2010.03.035

Special Issue: Wheat Soil fertilizer

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Effects of Straw Mulching on Inorganic Nitrogen and Soil Urease in Winter Wheat Field

ZHAO Peng1, CHEN Fu2, LI Li3   

  1. 1. College of Resource and Environment, Henan Agricultural University, Zhengzhou 450002, China;
    2. College of Agriculture and Biotechnology, China Agricultural University, Beijing 100094, China;
    3. Industrial Crops Institute, Henan Academy of Agriculture Sciences, Zhengzhou 450002, China
  • Received:2010-04-09 Published:2010-06-28

Abstract: To study the effects of straw mulching on inorganic nitrogen and soil urease in winter wheat field, fixed-plot field experiments were conducted in the growing season of 2006-2007 in Huaxian County,Henan Province.The results showed that content of soil NO3--N in 10-30 cm layer of the soil mulched with straw was lower than that in the unmulched soil in late growing period.Straw mulching was favorable to absorption and utilization of soil NO3--N of winter wheat.Straw mulching also affected distribution of soil NH4+-N and increased soil NH4+-N content.Since soil urease activity was high in the soil mulched with straw both in early growing period and at maturity of winter wheat, decreasing N appplication rate was reasonable in production practice.However, during the period from earing to grain filling soil urease activity was low and then increasing N application rate was reasonable.

Key words: Straw mulching, Winter wheat, Content of soil NO3--N, Content of soil NH4+ -N, Soil urease activity

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Cite this article

ZHAO Peng, CHEN Fu, LI Li. Effects of Straw Mulching on Inorganic Nitrogen and Soil Urease in Winter Wheat Field[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(3): 165-169. doi: 10.7668/hbnxb.2010.03.035.

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