福建烟区土壤养分丰缺状况及施肥对策

分析了福建烟区 4 0 8个土壤样品的养分 ,结果表明 ,该区植烟土壤平均pH5 .2 9,有机质 2 9.70g/kg ,全氮 1.6 2g/kg ,碱解氮 15 6 .97mg/kg ,速效磷 2 8.6 1mg/kg ,交换性钾 4 4.5 8mg/kg ,交换性钙 380 .6 5mg/kg ,交换性镁 39.13mg/kg ,有效铜 4 .2 2mg/kg ,有效锌 3.5 6mg/kg ,水溶性硼 0 .0 8mg/kg ,活性锰 31.38mg/kg。对烤烟生产来说 ,福建烟区土壤的pH值偏低 ,其钾、镁、硼的供应明显不足 ,为此提出了控氮、降磷、增钾镁、喷施微肥等相应的施肥建议。

Soil Nutrients in Tobacco-growing Areas of Fujian Province and Solution to Fertilization

The nutrients in 408 soil samples collected from tobacco\|growing areas in Fujian province were analyzed. The results showed that the average soil pH value was 5.29, the average contents of organic matter, total N, alkali\|hydrolyzable N, rapidly available P, exchangeable K, exchangeable Ca, exchangeable Mg, available Cu, available Zn, water\|soluble B, active Mn were 29.70g/kg, 1.62g/kg, 156.97mg/kg, 28.61mg/kg, 44.58mg/kg, 380.65 mk/kg, 39.13mk/kg, 4.22mg/kg, 3.56mg/kg, 0.08mg/kg, and 31.38mg/kg, respectively. Low soil pH, and deficiency of available K, exchangeable Mg and available B in soil were main limited factors for flue\|cured tobacco production. The fertilization suggestion of controlling N, decreasing P, increasing K and Mg, spraying micronutrient was recommended.