Journal of Northern Agriculture ›› 2021, Vol. 49 ›› Issue (2): 36-43.doi: 10.12190/j.issn.2096-1197.2021.02.06

• Soil and fertilizer·Crop genetic breeding • Previous Articles     Next Articles

Effects of different fertilization measures on soil fertility and potato yield in the dry farming area at the northern piedmont of Yinshan Mountain

JING Yupeng1,2,3,4, ZHAO Peiyi1,2,3,4, KANG Wenqin1, LIAN Haifei1, ZHANG Jun1,2,3,4, LI Yanfang1, LIANG Junmei1,2,3,4, YU Weizhuo1, DUAN Yu1,2,3,4, LI Lei5   

  1. 1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. Inner Mongolia Key Laboratory of Dryland Farming,Hohhot 010031,China;
    3. Wuchuan Scientific Observing and Experimental Station of Agro-Environment,Ministry of Agriculture and Rural Affairs,Wuchuan 011705,China;
    4. Scientific Observing and Experimental Station of Arable Land Conservation(Inner Mongolia),Ministry of Agriculture and Rural Affairs,Wuchuan 011705,China;
    5. Ordos Bureau of Soil and Water Conservation Supervision and Law Enforcement,Ordos 017010,China
  • Received:2021-01-01 Online:2021-04-20 Published:2021-06-21

Abstract: 【Objective】To study the effects of different fertilization treatments on soil fertility and potato yield in the dry farming area at the northern piedmont of Yinshan Mountain,and to provide the basis for the construction of soil fertilization mode in the area.【Methods】In Wuchuan Dry Farming Experimental Station of Inner Mongolia,combining the positioning test and laboratory analysis,NPK,organic fertilizer,NPK+organic fertilizer and no fertilization(CK) treatments were set up to analyze soil physical properties,contents of soil organic matter,total nitrogen and available nutrients,potato yield and fertilizer contribution rate in 0-40 cm soil layer under different fertilization treatments.【Results】Different fertilization treatments could effectively decrease soil bulk density and increase soil total porosity. Among them,organic fertilizer and NPK+organic fertilizer had significant improvement effect on soil physical properties(P<0.05). The soil bulk density decreased by 13.25% and 10.60% compared with CK,respectively,and the total porosity increased by 17.55% and 15.77% compared with CK,respectively. The effects of different fertilization treatments on soil nutrient contents in different soil layers were different. Organic fertilizer application alone could significantly increase soil organic matter and total nitrogen contents in 0-10 cm soil layer(P<0.05),which were 42.96% and 38.68% higher than that of CK,respectively. NPK+organic fertilizer treatment could significantly increase soil organic matter and total nitrogen content in 0-10 cm and 10-20 cm soil layers by 70.70%-78.33% and 73.53%-82.08% compared with CK,respectively. Organic fertilizer and NPK+organic fertilizer had significant difference on soil rapid effect nutrient content(P<0.05). Compared with CK,the content of alkali-hydrolyzable nitrogen,effective phosphorus and available potassium in 0-10,10-20 and 20-40 cm soil layers increased by 45.90%-157.84%,4.80-7.67 mg/kg and 59.66-179.66 mg/kg,respectively. NPK,organic fertilizer and NPK+organic fertilizer could significantly improve potato yield and marketable potato rate,and NPK+organic fertilizer was the best one. Potato yield and marketable potato rate increased by 171.64% and 50.87 percentage points respectively,and fertilizer contribution rate was 63.18%.【Conclusion】In order to improve soil fertility steadily,combined application of organic and inorganic fertilizers,and the organic fertilizer needed to be promoted in the dry farming area at the northern piedmont of Yinshan Mountain.

Key words: The dry farming area at the northern piedmont of Yinshan Mountain, Organic fertilization, NPK, Soil fertility, Potato, Yield

CLC Number: 

  • S147.2