修剪高度对沟叶结缕草水分利用效率和耗水量的影响  

Effect of Cutting Heights on Water Use Efficiency And Water Consumption of Manilagrass

作　　者：邹芬[1] 马令法[1] 

机构地区：[1]黔西南民族职业技术学院,贵州兴义562400

出　　处：《安徽农业科学》2011年第4期2337-2338,2340,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目标]研究贵州省黔西南地区,不同修剪留茬高度对沟叶结缕草的水分利用效率和耗水系数的影响。[方法]试验设3、6、9 cm和不修剪4个修剪留茬高度处理,每个处理重复3次,随机排列。每个蒸渗仪为1个试验单元,计采用12个称重式蒸渗仪。根据沟叶结缕草的长势,每月不定期修剪3次。[结果]随着修剪留茬高度由3 cm增至不修剪,沟叶结缕草的耗水量由96.33 mm增至386.60 mm,水分利用效率8月高于7和9月,留茬6 cm的水分利用效率高达0.75 kg/（hm2.mm）。[结论]对黔西南地区7~9月的沟叶结缕草的夏季修剪,留茬高度定在6 cm较为理想,既可以节水又能达到美观效果。[Objective] The influence of different cutting height on the water consumption efficiency and water consumption coefficient of Manilagrass in southwest Guizhou is studied in this paper.[Method] The experiment supposed four cutting height for procession,3 cm,6 cm,9cm and zero cutting.Every treatment randomly would repeat three times.Every distillation apparatus is one experiment unit and twelve weight distillation apparatuses are used.The growth of manilagrass determined that it should be cut randomly three times one month.[Results] withthe cutting height increased from 3 cm to zero-cutting height,the water consumption of manilagrass increased from 96.33 mm to 386.60 mm.Water utilization efficiency in August is higher than that in July and September.The water utilization efficiency of6 cmwas0.75 kg/（mm.hm2）.[Conclusion] The cutting of manilagrass in summer in southwest Guizhou from July to September was bestat 6 cmheight,which could not only save water,also beautify the surroundings.

关 键 词：水分利用效率 沟叶结缕草 修剪高度 耗水量 称重式蒸渗仪 留茬高度 黔西南地区 试验单元 

分 类 号：TU965.19[建筑科学]