关键词: 玉米, 玉米, 抗旱, 机理, 鉴定指标

Abstract:

In order to study the numerical classification of native plants and its application in the ecological virescence in Jingzhu expressway (the Hengyang zone), based on the overall investigation to the native plants type and category, classification of plant community in Jingzhu expressway (the Hengyang zone) by fuzzy classification analysis, the author chose native plant category and ecological greening and viresence models by biological, ecological, physiological traits. The results showed that: there were about 99 families, 232 genus, 352 species of vascular plants in the area, and they could be divided into 4 types: Ⅰ. Ass. Cuninghamia lanceolata+Pinus massoniana-Cinnamomum bodiniera+Camellia oleifera-Eremochloa ophiuroides+Lophatherum gracile; Ⅱ. Ass. Castanopsis fissa+Sapium discolor-Cinnamomum bodiniera+Lagerstroemia indica-Neyraudia reynaudiana+Clerodendrum bungei; Ⅲ. Ass. Castanopsis fissa+Michelia maudiae-Alangium chinense+Lindera communis-Centella asiatca+Sedum lineare; Ⅳ. Ass. Broussonetia papyrifera+Ligustrum lucidum-Miscanthus sinensis+Pyrolacalliantha, 50 of which were considered suitable for ecological virescence in Jingzhu expressway (the Hengyang zone). Then 3 models, including Ⅰ. Herbage+rattan model (located in the 0-10 m); Ⅱ. Shrub+herbage+rattan model (located in the 10-15 m); Ⅲ. Tree+shrub+herbage+rattan model (located in the 15-20 m) were designed by phytocoenology principles, to accelerated the process of vegetation restoration. This study will to some degree enrich and broaden the vegetation ecology and restoration ecology of the area and provide theoretical basis for the ecological virescence in Jingzhu expressway (the Hengyang zone). 352 species of vascular plants in the area,and they can be divided into 4 types: Ⅰ.Ass. Cuninghamia lanceolata+Pinus massoniana—Cinnamomum bodiniera+Camellia oleifera— Eremochloa ophiuroides+ Lophatherum gracile;Ⅱ. Ass. Castanopsis fissa+ Sapium discolor—Cinnamomum bodiniera+ Lagerstroemia indica—Neyraudia reynaudiana+ Clerodendrum bungei; Ⅲ. Ass. Castanopsis fissa+ Michelia maudiae—Alangium chinense+ Lindera communis—Centella asiatca+ Sedum lineare; Ⅳ.Ass. Broussonetia papyrifera+ Ligustrum lucidum—Miscanthus sinensis+ Pyrolacalliantha, 50 of which were considered suitable for ecological virescence in Jingzhu expressway(the Hengyang zone).Then three models,including Ⅰ. Herbage+rattan model(located in the 0～10m)Ⅱ. Shrub+herbage+rattan model(located in the 10～15m)Ⅲ. Tree+shrub+herbage+rattan model(located in the 15～20m) were designed by phytocoenology principles,to accelerated the process of vegetation restoration. This study will to some degree enrich and broaden the vegetation ecology and restoration ecology of the area and provide theoretical basis for the ecological virescence in Jingzhu Expressway(the Hengyang zone).