Temporal and spatial variation of soil fertility in Lijiang City tobacco area

doi:10.14088/j.cnki.issn0439-8114.2022.15.016

Abstract

Abstract: Membership function model, factor analysis method and fuzzy mathematics comprehensive method were adopted to evaluate soil nutrient abundance and fertility suitability in Lijiang City tobacco areas of Yunnan Province from 2015 to 2020 to provide a basis for scientific and reasonable fertilization, tobacco area planning, and tobacco planting area adjustments. The results showed that pH and nitrogen content showed an increasing trend, while the suitable ratio decreased; the organic matter and available potassium content decreased, while the suitable ratio showed a downward trend; the active chlorine content decreased, and the suitable ratio increased; the available phosphorus content decreased, and the suitable ratio did not change; the available sulfur was high and the suitable ratio decreased; the soil fertility suitability of the tobacco area decreased. In tobacco planting, it was necessary to follow the fertilization principles, such as reducing nitrogen, controlling phosphorus, increasing potassium, reducing sulfur, reducing chlorine, reapplying organic fertilizers, and applying less alkaline fertilizers, support a reasonable farming system, make full use of soil resources and improve tobacco production and quality, to realize the sustainable development of tobacco production.

Key words: tobacco, soil fertility, comprehensive evaluation, Lijiang City

CLC Number:

S158

LI Zi-lin, HUANG Ya-nan, LIU Shu-wu, SUN Yong-bo. Temporal and spatial variation of soil fertility in Lijiang City tobacco area[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(15): 103-106.

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