Welcome to Journal of Agriculture,
Journal of Agriculture

Journal of Agriculture ›› 2025, Vol. 15 ›› Issue (3): 36-44.doi: 10.11923/j.issn.2095-4050.cjas2023-0229

Previous Articles     Next Articles

Evaluation of Soil Quality and Suitability of Green Selenium-rich and Germanium-rich Production Areas in Nanhua Area of Central Yunnan

CHENG Yanxun1,2(), ZHAO Mengsheng1,2, XU Lei1,2(), ZHENG Hongfu1,2, ZHAO Jianbo1,2, LI Suoming1,2, JIANG Xiao1,2, QU Qiang1,2, ZHAO Chenyang1,2, Li Ming1,2   

  1. 1 Kunming General Survey of Natural Resources Center of China Geological Survey, Kunming 650100
    2 Technology Innovation Center for Natural Ecosystem Carbon Sink, Ministry of Natural Resources, Kunming 650100
  • Received:2023-10-12 Revised:2024-02-19 Online:2025-03-20 Published:2025-03-18

RichHTML

6

PDF (PC)

51

Abstract:

The study aimed to master the soil nutrients, soil environment, soil quality and soil environmental quality of green selenium-rich and germanium-rich production areas in Nanhua of central Yunnan. Based on the 630 surface soil samples data obtained from the 1:250000 land quality geochemical survey in Nanhua of central Yunnan, the soil nutrients, soil environment, soil quality and soil environmental quality of green selenium-rich and germanium-rich production areas in Nanhua County were evaluated according to relevant national or industry standards. The results showed that soil nutrient content in the study area was medium-highly rich, with 37.19% of the soil having sufficient nutrients of the first and second grades, and 42.35% of the soil having sufficient nutrients of the third grade. The overall soil environment was good, with first-grade soil (risk-free) accounting for 80.19%, second-grade soil (risk-controllable) accounting for 19.41%, and third-grade soil (higher risk) accounting for only 0.40%. The comprehensive grade of soil quality was generally high-quality and good, and the proportion of first-grade (high-quality) and second-grade (good) soil reached 60.26%. The proportion of soil that meets the AA grade green selenium-rich production area standard was 2.78%, and the area was 63 km2. The proportion of soil that meets the AA grade green germanium-rich production area standard was 28.5%, and the area was 646 km2. The proportion of soil that meets the AA grade green selenium-rich germanium production area standard was 2.78%, and the area was 63 km2. The soil nutrients in the study area were relatively sufficient, the soil environment was generally good, and it had broad prospects for the development of green selenium-rich and germanium-rich foods. This study provided a scientific basis for the establishment of a green selenium-rich and germanium-rich planting and breeding experimental base and the development of green selenium-rich and germanium-rich agricultural and livestock products in central Yunnan, and contributed to the construction of ecological agriculture, local economic development and rural revitalization in Nanhua area, it also had a certain reference effect on the development of green agriculture and the land use planning in central Yunnan.

Key words: soil quality, green origin, selenium-rich, germanium-rich, central Yunnan, Nanhua region of central Yunnan, soil nutrients, soil environment, soil quality, ecological agriculture development