鄂西典型烟区代表性烟田土壤系统分类研究

土壤条件对烟叶香型风格的彰显程度有着重要影响。土系是系统分类中最低级的基层分类单元。本研究以鄂西的咸丰、利川、兴山和房县为研究区域,在综合考虑地形地貌、成土母质、土壤条件、烟叶长势和质量的基础上,在每个地区确定5个典型优质烟田,主要通过观察土壤剖面形态特征尝试建立相应的土系。结果表明:1鄂西山区成土因素较为复杂,所调查的20个典型烟田分属人为土、淋溶土和雏形土3个土纲,归属于4个亚纲、11个土类、13个亚类,可划分为18个土族和19个土系。2鄂西烟田总体上起垄层质地多为壤质,养分含量中等且协调,较适宜优质烟叶种植,但需要增施有机肥和实行等高种植以提高有机质含量和防止水土流失。

Soil Taxonomy of Typical Tobacco Fields in West Hubei

Soil plays an important role in highlighting the aroma style of tobacco leaves. Soil series is the lowest classification unit of soil taxonomy and is a kind of holographic ID Card of soil. This paper took Xianfeng, Lichuan, Xinsan and Fangxian as the typical tobacco-planting regions of West Hubei, selected 5 typical tobacco fields in each regions which could grow the tobacco leaves of the highest-quality and tried to establish preliminarily the relevant soil series. The results showed that the soils of 20 studied tobacco fields belonged to Anthrosols, Argosols and Cambosols in Orders, and could be further categorized into 4 Suborders, 11 Groups, 13 Subgroups, 18 Families and 19 Series; generally, the tobacco fields were suitable for tobacco planting due to the loam textures and moderate nutrient contents in the plough layers, but organic fertilizers should be applied and contour cropping should be adopted.