【作者】 蒋影； 苏德荣；

【Author】 Jiang Ying,Su Derong (Key Laboratory for Forest Cultivation of Ministry of Education,Beijing Forestry University, Beijing 100083,China)

【机构】 北京林业大学省部共建森林培育与保护教育部重点实验室；

【摘要】 为了发展节水灌溉,提高草坪灌溉水分的利用率,以高羊茅为研究对象,结合其生长发育特点,探讨了地下滴灌对返青期高羊茅的生长变化特征的影响。试验采用5种处理:滴头埋深10cm,无水分扩散装置;滴头埋深15cm,有水分扩散装置;滴头埋深15cm,无水分扩散装置;毛管埋深15cm,无水分扩散装置;毛管埋深15cm,有水分扩散装置。研究表明,不同处理下高羊茅生长速度、地上生物量差异显著,且生长速度与地上生物量成正比例关系,两者受水分影响较大,而地下生物量和根冠比差异不明显。更多还原

【Abstract】 In order to develop the water -saving irrigation and increase the water use efficiency in lawn irrigation,taking the tall fescue as the object of study,discussed the impact of subsurface drip irrigation(SDI) on the period of returning green of tall fescue growth characteristics of changes.Test using five kinds of treatments:emitter depth of 10 cm,no water-proliferation devices;emitter depth of 15cm,a water-proliferation devices;emitter depth of 15cm,no water-proliferation devices;capillary depth of 15cm,no water-proliferation devices; capillary depth of 15cm,a water-proliferation devices.Research shows that the differences were remarkable on the growth rate and the above -ground biomass of tall fescue under different treatments,and the positive correlations were found between the growth rate and the above-ground biomass,and water great impact on the growth rate and the above-ground biomass,but the under-ground biomass and the root/ shoot ratios had no significant differences among the different treatments.更多还原