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在河南省老烟区,施肥不当是影响烟叶质量的重要因素之一。 一是烟田施用单元素氮素化肥或混配肥中的铵态氮过多,造成叶片氮代谢旺盛,糖代谢降低,烤后叶中含氮化合物过高、油分物质积累少、颜色暗、评吸刺激性大、香气少。二是磷素的有效性低,过磷酸钙和钙镁磷等速效磷含量在16％以下的肥料,在土壤中容易被固定,限制了烟株对磷素的吸收。虽经施用大量的磷肥,烟田缺磷现象仍很突出。三是叶
In the old tobacco area of Henan Province, improper fertilization is one of the important factors affecting the quality of tobacco leaves. The first application of nitrogen or nitrogen fertilizer fertilizer or compound fertilizer in the ammonium nitrogen is too much, resulting in leaf nitrogen metabolism, reduced sugar metabolism, nitrogen compounds in the leaves after roasting is too high, less accumulation of oil substances, dark color, Comments irritating large, less aroma. Second, the low availability of phosphorus, superphosphate and calcium magnesium phosphate and other available phosphorus content below 16% of the fertilizer, easily fixed in the soil, limiting the tobacco plant on the absorption of phosphorus. Despite the use of a large number of phosphate fertilizer, phosphorus deficiency phenomenon is still very prominent. Third, leaves