3种禾草不同混播比例建植植被的护坡性能研究

发布时间：2018-03-28 18:14

本文选题：禾草　切入点：混播比例　出处：《内蒙古农业大学》2015年硕士论文

【摘要】：本试验在半干旱地区内蒙古土默川平原哈素海环湖路边坡对无芒雀麦(.Bromus inermisLeyss.)、冰草(Agropyron cristatum (L.)Gaertn.)和披碱草(Elymus dahuricus Turcz.)不同比例混播的护坡性能进行了研究。旨在为北方干旱和半干旱水土流失地区进行生物工程护坡提供科学理论依据。试验设置了7个处理,包括3个草种的单播处理及3个草种以1：1：1、2：1：1、1：2：1和1：1：2为比例的混播处理。试验对各个处理生态适应性、防止水土流失性和景观效益性进行了综合研究。对各个处理的出苗时间、出苗率、耐旱性、越冬率、成坪速度和时间、草层高度、密度、盖度、地上生物量、茎叶截留效应、地下生物量、抗雨水冲刷、均匀性、杂草状况、青绿度和绿色期进行了测试。结果表明,无芒雀麦、冰草、披碱草1：1：2混播处理的生态适应性、防止水土流失性和景观效益性的综合评定得分最高,该处理优于其他处理,该处理草种之间契合度高,适宜北方干旱少雨、气候寒冷生态环境,建植速度快,分蘖能力强,覆盖度高,水土保持效益显著,视觉效果好,是优良的护坡混播配比组合。
[Abstract]:This experiment was conducted to study the slope protection performance of different proportion mixed seeding of Bromus inermisis Leyss.Bromus, Agropyron cristatum L.Gaertn.and Euphorbia dahuricus Turcz. on the slope of Hazuhai Ring Lake Road in Tumachuan Plain, Inner Mongolia, Inner Mongolia, China. The purpose of this experiment is to study the slope protection performance of mixed seeding with different proportions for drought and semi-arid in the north of China. Biological engineering slope protection in arid soil and water loss areas provides scientific theoretical basis. Seven treatments have been set up in the experiment. The experiment includes monoculture treatment of 3 species and mixed sowing treatment of 3 species with proportion of 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1: 1 and 1:1:2. The ecological adaptability, soil erosion prevention and landscape benefit of each treatment were studied comprehensively. The emergence time of each treatment was studied. Emergence rate, drought tolerance, overwintering rate, flat speed and time, grass height, density, coverage, aboveground biomass, stem and leaf interception effect, underground biomass, resistance to Rain Water scour, uniformity, weed status, The green degree and green period were tested. The results showed that the ecological adaptability, soil erosion prevention and landscape benefit were the highest in the mixed sowing treatments of bromegrass, ice grass and Elaeagnus capsicum at 1:1:2, and the results showed that the treatment was superior to other treatments. This treatment is suitable for the combination of soil and water conservation benefit and visual effect. It is suitable for North China with drought and less rain, cold climate and ecological environment, fast planting speed, strong tillering ability, high mulching degree, remarkable benefit of soil and water conservation, and good visual effect.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S157.433

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