分析了大庆地区的自然状况以及委陵菜属植物资源在大庆地区的分布状况,汇总了9种委陵菜属植物种类,结合实地踏查、小区试验,以及生物特征观测等方法,筛选出适合园林绿化的7种委陵菜属植物,并从观赏性、抗旱性和抗寒性、耐践踏性、环境的适应性、覆盖度、养护频度等园林应用方面对其进行评价,认为其观赏效果颇佳;具有一定的抗旱性和抗寒性;耐践踏能力强,且光叉叶委陵菜、蔓委陵菜强于伏委陵菜、鹅绒委陵菜,委陵菜、翻白委陵菜、蒿叶委陵菜次之;委陵菜的植物形态、结构与其所处的环境是协调统一的;鹅绒委陵菜、蔓委陵菜、光叉叶委陵菜的覆盖度优于伏委陵菜、蒿叶委陵菜、翻白委陵菜;委陵菜植物无需人工料理和养护,是理想的园林绿化植物。在此基础上,就委陵菜属植物在大庆城市绿化中的保护和开发利用提出了建议。
Total yields of vine tip of seven varieties of Leaf-vegetable sweetpotato during 2006-2007 were investigated; proportions of the weights of leaf, leaf stalk and stem in total vine tip yield and their changes among varieties and during topping stages were studied. The results showed that vine tip yields of sweetpotato were significantly different among either varieties or topping stages; leaf yield accounted for about 51% of total vine yield, and changes in leaf yield among topping stages were higher than that among varieties; while yields of leaf stalk and stem each accounted for 25% of total vine tip yield, their changes among varieties were higher than those among topping stages. These results revealed the yield composition of vine tip of Leaf-vegetable sweetpotato, which provided scientific references for breeding and cultivating new Leaf-vegetable sweetpotato variety and its industrialization.
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