《Table 4 The content of available phosphorus in tobacco-planting soil of Fuzhou city》

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《Evaluation and Analysis of Nutrients in Tobacco-Planting Soil in Fuzhou City》

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As shown in Table 4，the available phosphorus content of tobacco-planting soil in the whole city is 2.96-119.00 mg/kg，with an average of 43.26 mg/kg and a coefficient of variation of60.07%.Among them，soil samples with available phosphorus content of less than 10mg/kg account for 11.97%，13.38%for10-20 mg/kg，20.42%for 20-40 mg/kg，and 48.59%for40-80 mg/kg.It is generally believed that soil available phosphorus content of 20-40 mg/kg is more suitable for flue-cured tobacco，and soil available phosphorus content of less than10 mg/kg is in the state of phosphorus deficiency[3].Therefore，except a small amount of soil with low phosphorus or phosphorus deficiency，the supply of available phosphorus in most tobacco soils in Fuzhou is abundant，which is very beneficial to the cultivation of high quality flue-cured tobacco.