栾树抗旱生理特性研究  

Study on Physiological Characteristics of Drought Resistance of Koelreuteria bipinnata Franch

作　　者：张淼 周琨 何传正 薛新权 

机构地区：[1]河南省新县林业局,河南新县465550

出　　处：《现代农业科技》2013年第13期165-167,共3页Modern Agricultural Science and Technology

摘　　要：对二年生栾树进行持续干旱处理,分析了土壤含水率、叶片含水率、叶绿素含量、相对电导率、丙二醛(MDA)含量、脯氨酸含量以及可溶性糖含量等生理指标的变化特点。结果表明:在控水处理后,土壤含水率和叶片含水率随胁迫天数增加而逐渐降低;叶绿素含量、相对电导率、MDA含量、脯氨酸含量随胁迫天数增加而逐渐增加,但叶绿素含量与脯氨酸含量在控水处理后的第35天有所降低;可溶性糖含量在控水处理后变化规律不明显。Ground monitoring station is a core component of the satellite navigation system.It provides master station the original measurement data whose precision determines the orbiting and time synchronization accuracy,thus affects the service quality of the system.Multipath and variation of antenna phase center are non-negligible effects for the high precision ranging of the station,because of that,in this paper,a multipath detection and correction system based on a high-gain,anti-multipath antenna is introduced,which quantitatively assesses the multipath environment around the station and performs the corrections to the antenna phase center of the receiver and multipath.Finally,by going through the procedures of multipath detection,correction of prototype establishments and calibration of array antennas,it provides a complete resolution to the calibration of antenna phase center and multipath detection mitigation of the station.

关 键 词：栾树 干旱胁迫 抗旱生理 特性 

分 类 号：S792.99[农业科学—林木遗传育种]