Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (35): 103-110.doi: 10.11924/j.issn.1000-6850.cabs2022-0989

Previous Articles     Next Articles

Analysis of Nutrient Status and Spatial Distribution Characteristics of Tobacco Planting Soil in Hanzhong of Qinling Mountains based on ArcGIS

LIU Futong1(), ZHENG Meiying2, WANG Hui2, LI Maosen1, ZHAO Peiyan1, ZHENG Bangxi1,3, HE Wenqin2(), YAO Feng2(), REN Tianbao1   

  1. 1 Tobacco College of Henan Agricultural University/Henan Provincial Biochar Research and Engineering Technology Center,Zhengzhou 450002
    2 Shaanxi Tobacco Hanzhong Company, Hanzhong, Shaanxi 723000
    3 Shaanxi Company of China Tobacco Industry Co., Ltd., Hanzhong, Shaanxi 723000
  • Received:2022-11-21 Revised:2023-01-23 Online:2023-12-11 Published:2023-12-11
  • Contact: HE Wenqin, YAO Feng

Abstract:

The nutrient content of tobacco planting soil in Hanzhong area of Qinling Mountains was analyzed to provide theoretical basis for scientific fertilization and soil health cultivation of tobacco planting soil in Hanzhong area of Qinling Mountains. The spatial distribution law and characteristics of soil nutrients for tobacco planting in Hanzhong, Qinling Mountains were analyzed by using statistical methods and ArcGIS software. The results showed that the average values of organic matter, available nitrogen, available phosphorus, available potassium and pH of tobacco planting soil in Hanzhong, Qinling Mountains were 16.69 g/kg, 159.31 g/kg, 43.34 mg/kg, 375.22 mg/kg and pH 6.21. The content of soil organic matter mainly belonged to the fourth grade, accounting for 34.09%; the content of available nitrogen mainly belonged to the second grade, accounting for 46.59%; the content of available phosphorus, available potassium and pH mainly belonged to the first grade, accounting for 38.64%, 75.00% and 23.86%, respectively. There was a significant positive correlation between soil nutrient contents; in term of spatial distribution, the soil organic matter content and available nitrogen content were the highest in the area bordering Nanzheng County and Xixiang County, the available phosphorus content was the highest in Ningqiang County and Nanzheng County, the available potassium content was the highest in Nanzheng County, Ningqiang County and Xixiang County, and the pH level was the highest in the south-central part of Lueyang County, the southern part of Mian County, the northern part of Nanzheng County and the central part of Xixiang County. The soil nutrient content in Mian County, Yang County, Lueyang County and Xixiang County was relatively low. The soil nutrient status in Nanzheng County and Ningqiang County was good. It is suggested to increase the content of soil organic carbon by applying organic fertilizer, reduce the application of chemical fertilizer, and enhance the ability of soil carbon fixation and fertilization.

Key words: Qinling Mountains, soil nutrients, spatial distribution, organic matter, nutrient characteristics