Soil Texture Grading and Zoning for Tobacco Planting in Yuxi at 100 m Spatial Resolution

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Supported by Hongta tobacco (group) co., LTD. Technology Project (No.S-6019001), Jiangsu Social Development Plan Project(No.BE2018759), the National Key Research and Development Program of China (No.2016YFC0402805)

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    【Objective】 The development of soil texture grading and zoning is of practical significance for improving tobacco quality.【Method】 Based on the soil profile data recorded in the soil species records of Yunnan Province (prefecture and county), combined with GIS technology and geostatistics, this study carried out a high-precision division of soil texture and quality for a tobacco plantation in Yuxi City. A spatial database of soil texture at 100 m spatial resolution level was built, and the quality grade of soil texture of the key soil factors for tobacco zoning was scientifically divided. 【Result】 The results showed that the soil texture and quality suitable for tobacco planting in Yuxi varied greatly. According to soil texture and quality, the areas of grade I to grade V were 9.87%, 36.08%, 11.7%, 21.38% and 20.97%, respectively. The most suitable grade I soil for tobacco planting was mainly distributed in Eshan and Huaning counties, with an area of 26.2 km2 and 25.2 km2, respectively. Also, suitable second class soils were mainly distributed in Xinping, Yuanjiang and Jiangchuan, with an area of 87 km2, 58.6 km2 and 55.5 km2, respectively. There were obvious differences in soil texture and quality for tobacco plantation soils at different altitudes. The main suitable tobacco plantation area was at the altitudes of 1600 ~ 2000 m. 【Conclusion】 The spatial distribution of soil texture at 100 m spatial resolution level in Yuxi was as detailed as village scale, which greatly improved the precision and practicability for tobacco plantation zoning. These results can provide a theoretical basis for high-quality tobacco production, long-term zoning and scientific management of soils.

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XIE Xinqiao, LU Junping, TIAN Yutian, YANG Jizhou, LI Xiangwei, SUN Weixia, SONG Zhengshan, SHI Xuezheng. Soil Texture Grading and Zoning for Tobacco Planting in Yuxi at 100 m Spatial Resolution[J]. Acta Pedologica Sinica,2023,60(4):1113-1122.

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  • Received:September 28,2021
  • Revised:January 27,2022
  • Adopted:March 02,2022
  • Online: March 07,2022
  • Published: July 28,2023