贵阳市10种观赏草基于AHP方法的观赏适应性综合评价

从观赏草观赏性出发，结合与适应性和生长繁殖相关的11个指标，通过层次分析法(AHP)对贵阳市引进的10个观赏草品种进行观赏适应性综合评价。结果表明，11个评价指标中，观赏草的株型、叶色、耐旱性所占权重均较大(＞0.1)，是影响其观赏适应性的重要指标；通过建立评分标准后，得出10个品种的观赏性排名为火焰狼尾草、花叶蒲苇、紫叶狼尾草、矮蒲苇、新西兰亚麻、金叶苔草、粉黛乱子草、蓝羊茅、红巨人朱蕉、黄金苔草；生长适应性排名为矮蒲苇、花叶蒲苇、火焰狼尾草、紫叶狼尾草、新西兰亚麻、黄金苔草、粉黛乱子草、金叶苔草、红巨人朱蕉、蓝羊茅；最终综合评分观赏适应价值极好的(Ⅰ级＞4.30分)有花叶蒲苇、火焰狼尾草；观赏适应价值较好的(Ⅱ级3.56～4.30分)有矮蒲苇、紫叶狼尾草、新西兰亚麻、粉黛乱子草、金叶苔草；观赏适应价值一般的(Ⅲ级＜3.56分)有蓝羊茅、红巨人朱蕉、黄金苔草。

Comprehensive Evaluation of the Ornamental Adaptability of 10 Species of Introduced Ornamental Grass in Guiyang

Based on the analytic hierarchy process, this paper screened out 11 related evaluation indicators related to the adaptability, growth and reproduction of ornamental grass, and comprehensively evaluated the ornamental properties of 10 ornamental grass introduced in Guiyang. The results showed that among the 11 evaluation indicators, the plant type, leaf color, and drought tolerance of ornamental grass accounted for a larger weight (>0.1), which were important indicators that affect the comprehensive evaluation of their ornamental properties. After the establishment of the scoring standard, the ornamental rank was calculated as: Pennisetum setaceum ‘Fire Works’, Cortaderia selloana ‘Silver Comet’, Pennisetum setaceum ‘Rubrum’, Cortaderia selloana ‘Pumila’, Phormium Sundowner, Carex oshimensis ‘Evergold’, Muhlenbergia capillaris, Festuca glauca, Cordyline australis ‘Red sensation’, Carex riparia ‘Bowles Golden’; Growth adaptability ranking: Cortaderia selloana ‘Pumila’, Cortaderia selloana ‘Silver Comet’, Pennisetum setaceum ‘Fire Works’, Pennisetum setaceum ‘Rubrum’, Phormium ‘Sundowner’, Carex riparia ‘Bowles Golden’, Muhlenbergia capillaris, Carex oshimensis ‘Evergold’, Cordyline australis ‘Red sensation’, Festuca glauca. It was finally concluded that the comprehensive score had excellent ornamental value with grade I (>4.30 points) including Cortaderia selloana ‘Silver Comet’, Pennisetum setaceum ‘Fire Works’; better ornamental value with grade II (3.56–4.30 points) including Cortaderia selloana ‘Pumila’, Pennisetum setaceum ‘Rubrum’, Phormium ‘Sundowner’, Muhlenbergia capillaris, Carex oshimensis ‘Evergold’; the general ornamental value with Ⅲ grade (<3.56 points) including Festuca glauca, Cordyline australis ‘Red sensation’, Carex riparia ‘Bowles Golden’.