呼和浩特地区2种冷季型草坪草需水规律研究.

【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】‘Houndog Ⅴ’ 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 ‘Houndog Ⅴ’ 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 ‘Houndog Ⅴ’. Under the 20 %-25 %(mild irrigation) water conditions, the ‘Houndog Ⅴ’ 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. [ABSTRACT FROM AUTHOR]