Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (17): 45-50.doi: 10.11924/j.issn.1000-6850.casb2020-0539

Special Issue: 资源与环境

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Effects of Soil Organic Matter on Nitrogen Content in Dryland Orchard

Zhang Shuqiang(), Yao Zhilong()   

  1. College of Agriculture and Forestry Science and Technology, Long Dong University, Qingyang Gansu 745000
  • Received:2020-10-09 Revised:2020-12-08 Online:2021-06-15 Published:2021-06-29
  • Contact: Yao Zhilong E-mail:736279289@qq.com;yzl8844@163.com

Abstract:

The study aims to explore the correlation and spatial distribution of soil nutrients for the sustainable utilization of orchard soil. The chemical analysis was conducted to determine soil organic matter and nitrogen content in 30 main apple production areas in Qingyang. The results show that soil organic matter is significantly correlated with soil total nitrogen (y=0.055x+0.140, R2=0.940), while NaOH-hydrolyzed nitrogen is not obviously correlated with soil organic matter (y=3.061x+26.65, R2=0.414) and total nitrogen (y=55.28x+18.83, R2=0.441) in 0-20 cm soil. Soil organic matter is significantly correlated with soil total nitrogen (y=0.045x+0.250, R2=0.721), while NaOH-hydrolyzed nitrogen is not obviously correlated with soil organic matter (y=2.237x+23.84, R2=0.158) and total nitrogen (y=57.47x+5.141, R2=0.298) in 20-40 cm soil.

Key words: dryland orchard, soil, organic matter, total nitrogen, NaOH-hydrolyzed nitrogen, spatial distribution, correlation

CLC Number: