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经调查,山东诸城烟区土壤含氮量稍微偏高,土壤速效磷、速效钾比较丰富,有机质较低,氯含量较高。经过3年土壤改良和采取减氮施肥措施后,土壤速效氮明显降低,速效磷、速效钾有所增加,尤其土壤有机质含量呈增高趋势,氯离子含量微有降低。调查数据说明,改良土壤措施可行,对烟草植株的生长发育、营养供应和烟叶香气的提高均起到了良好的促进作用。尽管土壤速效钾含量较丰富,但有效性较低,还应多施钾肥,适当补充锌肥。
After investigation, the contents of nitrogen in soil of Zhucheng Tobacco Planting Area of Shandong Province are slightly higher, available phosphorus in soil, available potassium, abundant organic matter and higher chlorine content. After three years of soil improvement and nitrogen fertilization, the content of available nitrogen in soil decreased obviously, available phosphorus and available potassium increased, especially in the soil, the content of organic matter increased and the content of chloride ion decreased slightly. Survey data show that soil improvement measures feasible, tobacco plant growth and development, nutrient supply and tobacco leaf aroma have played a good role in promoting. Although the soil available potassium content is more abundant, but less effective, should also be more potassium fertilizer, appropriate zinc supplements.