呼和浩特地区2种冷季型草坪草需水规律研究  

Water Demand Regularity of Two Cold-Season Turfgrass in Hohhot

作　　者：李紫琳 郭蕴珂 王雷[1] LI Zi-lin;GUO Yun-ke;WANG Lei(College of Forestry,Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010019,China)

机构地区：[1]内蒙古农业大学林学院,内蒙古呼和浩特010019

出　　处：《西南农业学报》2021年第4期855-861,共7页Southwest China Journal of Agricultural Sciences

基　　金：内蒙古自治区自然科学基金项目(2015MS0346);内蒙古农业大学双一流(203/170005)。

摘　　要：【目的】为解决城市园林供水与社会水资源供需矛盾,建立节水型草坪。【方法】本研究以猎狗5号和美洲虎4G为试验材料,分别设置15%~20%(最少灌溉),20%~25%(轻度灌溉),25%~30%(中度灌溉),30%~40%(充分灌溉)4种不同的水分供给条件,测定了植物的净光合速率(P_n)、气孔导度(G_s)、蒸腾速率(T_r)、脯氨酸(Pro)、丙二醛(MDA)、叶绿素含量(Chl)和草坪质量。【结果】猎狗5号的生长水分条件下限为25%~30%(中度灌溉),美洲虎4G为20%~25%(轻度灌溉)。【结论】美洲虎4G对水分的需求最低限度低于猎狗5号,具有更好的草坪节水潜力;猎狗5号在20%~25%(轻度灌溉)的水分条件下能够满足较低的草坪质量需求的绿地景观;美洲虎的景观效果和绿期维持能力更稳定。【Objective】In order to solve the contradiction of water consume between urban gardens and social life,the establishment of water-saving lawns has become the main direction of urban green space development.【Method】‘HoundogⅤ’and‘Jaguar IVG’were used as experimental materials in the present study,and they were cultured under four different water supply conditions:15%-20%,20%-25%,25%-30%,and 30%-40%.The contents of proline(Pro),malondialdehyde(MDA),chlorophyll(Chl)and(P_(n))Net Photosynthetic rate,(T_(r))Transpiration,and(G_(s))Stomatal Conductance have been measured.【Result】The growth of water conditions on the‘HoundogⅤ’of the lower limit was 25%-30%(moderate irrigation),and the‘Jaguar IVG’growth of water conditions limit was 20%-25%(mild irrigation).【Conclusion】With better lawn water-saving potential,the demand of Festuca arundinacea Schreb‘Jaguar IVG’for water was lower than that of the Festuca arundinacea Schreb P‘HoundogⅤ’.Under the 20%-25%(mild irrigation)water conditions,the‘HoundogⅤ’meets the needs of lower quality lawn green landscape.The Festuca arundinacea Schreb‘Jaguar IVG’landscape effects and the ability to maintain the green period are more stable.

关 键 词：呼和浩特市草坪草 猎狗5号 美洲虎4G 植物生理生化指标 生长有效水范围 

分 类 号：S688.4[农业科学—观赏园艺]