ACTA AGRICULTURAE BOREALI-SINICA ›› 2012, Vol. 27 ›› Issue (5): 224-229. doi: 10.3969/j.issn.1000-7091.2012.05.042

Special Issue: Soil fertilizer

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Effect of Different Fertilization on Soil Respiration Flux in Arid Farmland of North Area of Yinshan

LI Huan-chun1,2,3, YAN Chang-rong1, ZHAO Pei-yi2, TUO De-bao2, LIU Shuang1, AN Hao2   

  1. 1. Institute of Environment and Sustainable Development in Agriculture CAAS Key Laboratory of Dryland Agriculture Ministry of Agriculture Beijing 100081 China;

    2. Institute of Plant Nutrition and Analysis Inner Mongolia Academy of Agriculture and Animal Husbandry Huhhot 010031 China ;
    3. Inner Mongolia Prataculture Research Center CAS Huhhot 010031 China
  • Received:2012-07-04 Published:2012-10-28

Abstract: In order to discuss the effects of fertilization on soil respiration in the potato field in North of Yinshan in 2010,Soil CO2 respiration fluxes and soil temperature and moisture and biotic factors were measured in a long-term experiment.The results showed that the diurnal variation of soil respiration showed asymmetric pattern,with the minimum value occurring around 6:00-8:00 hours and the maximum value around 12:00-16:00 hours.Furthermore,there was a significant linear relationship between soil respiration and soil temperature at 10 cm depth.The differences among 4 treatments were not same in different time of one day.The seasonal variations of soil respiration responded to the coordinated effects of soil temperature and moisture and biotic factors.During the whole growing season there was a significant relationship between soil respiration and potato dry matter accumulation rate and soil moisture at 0-20 cm depth.The soil respiration increased with the increasing of weight of potato during the early stage(0-52 days after emergence),and decreased with the soil temperature decreasing during the late stage(98-142 days after emergence).The soil respiration rate was increased by applying fertilizer significantly and the order was applying matter(M) applying manure and NPK chemical fertilizer(NPKM) applying chemical fertilizer(NPK) non fertilization(CK).This result is mainly because of the potato growing faster and the C/N were adjusted to a fitting rage and the biomass was increased by applying fertilizer.

Key words: Fertilization, Soil respiration, Soil temperature, Biomass, Soil moisture

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Cite this article

LI Huan-chun, YAN Chang-rong, ZHAO Pei-yi, TUO De-bao, LIU Shuang, AN Hao. Effect of Different Fertilization on Soil Respiration Flux in Arid Farmland of North Area of Yinshan[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(5): 224-229. doi: 10.3969/j.issn.1000-7091.2012.05.042.