园林绿化中不同整地造景方式对草坪生长和养护的影响

Effects of Different Soil Preparation on Growth and Maintenance of Lawn in Landscaping

在西北干旱半干旱地区园林绿化中,研究了不同整地造景方式水平地、山坡地和丘陵地对草坪生长和养护的影响。结果表明:与山坡地和丘陵地相比,建植草坪时水平地不同位置灌溉后水分均一,蒸发量小,土壤相对含水量下降缓慢,草坪不同位置高矮均一,分蘖数高,越冬后未出现秃斑,修剪和灌溉方便。灌溉后20d水平地不同位置地心、近缘和边缘土壤相对含水量在22.80%~23.04%之间变动,草坪高度在32.06~32.61cm之间变动,分蘖数在3.20~3.81个/株之间变动。因此,建议在干旱半干旱地区建植草坪时采用水平地整地造景,缩减山坡地和丘陵地整地造景。

Landscaping in arid and semi-arid areas of northwest China,the effects of different soil preparation flat,slope and bent ground on growth and maintenance of lawn were studied. The results showed that the moisture content in different position of flat ground was uniform after watering,the evaporation capacity was low,the relative water content of soil was dropped slowly,the height of lawn in different position was uniform,the tiller number was high,there were no naked sports after wintering,the pruning and watering were convenient compare to slope and bent ground. The relative water content in heart,close edge,edge of flat ground were changed in 22. 80% ～ 23. 04%,the height of lawn was changed in 32. 06 ～ 32. 61 cm,the tiller number was changed in 3. 20/～ 3. 81/plant. Therefore,the flat ground was suggested to plant lawn in arid and semi-arid areas,and slope and bent ground should be reduced.