河南宝丰烟区生态因素与烟叶质量特点

分析河南宝丰烟区的植烟基本条件、气候因素、土壤养分状况以及所产烟叶的质量特点.结果表明：宝丰烟区无霜期为204 ～ 248d,＞10℃积温为4 681.3 ～5 247.5℃,日平均气温≥20℃的适宜气温持续时间为122～152 d;大田期光照充足,降水基本能够满足烤烟生长需要.植烟土壤有机质和速效氮含量较高,速效磷和速效钾含量适中,土壤含氯量低,为烤烟适宜或最适宜生长类型区.烟叶各化学成分含量适宜,组成比例协调,但协调性与津巴布韦烟叶相比尚有差距.

Analysis of Ecological Factors and Quality of Flue-cured Tobacco Leaves in Baofeng Tobacco-growing Area of Henan Province

The basic conditions,climatic factors,soil nutrients and quality of flue-cured tobacco leaves in Baofeng tobacco-growing area were analyzed.The number of frost-free period was 204-248 days,the accumulated temperature above 10℃ was 4 681.3-5 247.5 ℃,the number of days with an average daily temperature above 20 ℃ was about 122-152 d in Baofeng tobacco-growing areas where there was sufficient sunlight and plentiful rainfall satisfying the climate requirements necessary for the growth and development of high quality flue-cured tobacco.The characteristics of soil nutrient contents in tobacco fields were analyzed,the content of organic substance and available nitrogen were high,the contents of available phosphorus and potassium were suitable and the content of chorine was low.Tobacco leaves of Baofeng had reasonable chemical component and chemical compositions were apt.However,the coordination of the chemical composition in tobacco leaves was inferior to the high quality Zimbabwe tobacco.