Comprehensive Evaluation and Spatial Distribution of Soil Fertility Suitability in Changting Tobacco-Growing Area
In order to accurately assess the soil nutrient status of"Cuibi 1"characteristic tobacco planting in Changting tobacco-growing area in Longyan,Fujian province,90 soil samples were collected from six planting towns of"Cuibi 1"tobacco-growing area.Eight chemical indexes were determined,including pH,organic matter,available nitrogen,etc.The suitability of soil fertility in Changting tobacco-growing area was thoroughly assessed using the fuzzy mathematics method.The results showed that the soil fertility in the sampling area was above grade Ⅳ,and the suitability index was 0.66,so the soil fertility was high.According to the present situation of soil nutrient abundance and deficiency,the grade of soil fertility was analyzed.Among the six towns,the fertility suitability grade of Guanqian was the highest,followed by Cewu,Gucheng,Xinqiao,Datong and Tongfang.As a whole,the fertilization scheme for flue-cured tobacco in Changting tobacco-growing area should adjust soil pH,control the application of nitrogen fertilizer and chlorine fertilizer,reduce phosphorus fertilizer,supplement potassium fertilizer,organic fertilizer and medium-and micro-fertilizers such as calcium and magnesium,improve the availability of various nutrients in soil,achieve precise fertilization and thus improve the quality of tobacco leaves.
Changting tobacco-growing areaFlue-cured tobaccoCuibi 1Soil fertilityComprehensive evaluationSpatial distribution
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NSTL
万方数据
