摘要
运用模糊数学隶属函数模型对恩施州主要植烟县的气候适生性和土壤适宜性进行了综合评价。结果表明:(1)恩施烟区具有无霜期长、≥10℃积温高、日均温≥20℃持续天数多、土壤pH适宜、土壤含氯量较低等特点,具备生产优质烟叶的条件:(2)恩施烟区气候适生性指数(CFI)平均为0.80,各植烟县(市)分布于0.74～0.87之间,通过聚类分析可将8个植烟县(市)划分为3类;(3)恩施烟区土壤适宜性指数(SFI)平均为0.67,各植烟县(市)SFI值处于0.589～0.805之间,通过聚类分析可将8个植烟县(市)划分为4类。
Climate feasibility and soil feasibility were evaluated comprehensively by applying membership function and estimating weight values for each index by using principal components analysis. The results indicated that Ehshi tobacco growing areas had a long frost-free period, high accumulated temperature of ≥10℃, a long period of time with daily average temperature of ≥20℃, favorable pH value and low content of chlorine. The basic ecological conditions were favorable for the development of high quality tobacco leaves. Climate feasibility index （CFI） was 0.80 and ranged from 0.74 to 0.87. Based on CFI, tobacco growing areas could be classified into three groups by cluster analysis. Soil feasibility index （SFI） was 0.67, and ranged from 0.589 to 0.805. Based on SFI, tobacco growing areas could be classified into four groups by cluster analysis.
出处
《中国烟草科学》
CSCD
2008年第5期18-21,共4页
Chinese Tobacco Science
关键词
思施
烤烟
气候适生性
土壤适宜性
Enshi
flue-cured tobacco
climate feasibility
soil feasibility
