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本文对重庆市植烟区土壤的主要肥力特征进行了研究。结果表明:重庆市植烟土壤的pH值在弱酸至中性范围;土壤有机质、全氮、全钾、交换性钙、有效硫含量较高;全磷、有效铁、有效锰丰富;阳离子交换量、有效氮、磷、钾含量较低;有效硼、锌、钼、铜和镁质量分数低;不同植烟生态区土壤肥力特征有较大的差异。因此,重庆市植烟区在施肥管理上应因地制宜,大力推进平衡施肥技术和注重微量元素的补给。
In this paper, the main soil fertility characteristics of tobacco planting area in Chongqing were studied. The results showed that the pH value of tobacco planting soil in Chongqing was in the range of weak acid to neutral; soil organic matter, total nitrogen, total potassium, exchangeable calcium and available sulfur were higher; total phosphorus, available iron and available manganese were abundant; cation exchange capacity , And the content of available nitrogen, phosphorus and potassium is low; the effective boron, zinc, molybdenum, copper and magnesium are low in mass fraction; and the characteristics of soil fertility in different tobacco planting ecological zones are quite different. Therefore, tobacco planting in Chongqing should be based on local conditions in fertilizer management, vigorously promote the balanced fertilization technology and focus on the supply of trace elements.