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不同灌水量下限对高羊茅绿期及抗寒性生理指标的影响
引用本文:刘立军,陈为峰,王凯,张呈祥.不同灌水量下限对高羊茅绿期及抗寒性生理指标的影响[J].应用生态学报,2012,23(1):38-44.
作者姓名:刘立军  陈为峰  王凯  张呈祥
作者单位:山东农业大学资源与环境学院,山东泰安,271018
基金项目:国家环保公益性行业科研专项(200809047)资助
摘    要:采用盆栽试验的方法,研究了秋末冬初不同灌水量下限分别占田间持水量(FC)的80%、70%、60%、50%]对高羊茅绿期及抗寒性生理指标的影响,结果表明:在冬季低温条件下,80%和70% FC灌水处理使高羊茅叶片相对含水量、保护酶(SOD、POD和CAT)活性、叶绿素、可溶性糖和游离脯氨酸含量维持在较高水平,丙二醛含量和电解质外渗率降低,高羊茅的抗寒性增强.80% FC灌水处理分别较70%、60%和50% FC处理的草坪草绿期延长4、22和28 d,到达枯黄休眠的时间最晚,完成返青的时间最早.综合考虑节水和提高水分利用效率等多种因素,70% FC灌水处理为高羊茅秋末冬初季节最佳的灌水下限.

关 键 词:灌水下限  高羊茅  绿期  抗寒性  水分利用效率

Effects of different irrigation minima on green period and cold-resistance physiological indices of Festuca arundinacea
Liu Li-Jun,Chen Wei-Feng,Wang Kai,Zhang Cheng-Xiang.Effects of different irrigation minima on green period and cold-resistance physiological indices of Festuca arundinacea[J].Chinese Journal of Applied Ecology,2012,23(1):38-44.
Authors:Liu Li-Jun  Chen Wei-Feng  Wang Kai  Zhang Cheng-Xiang
Institution:College of Resource and Environment, Shandong Agricultural University, Tai'an 271018, Shandong, China. liulj2014@Yahoo.cn
Abstract:A pot experiment was conducted to study the effects of different irrigation minima 80% field capacity (FC), 70% FC, 60% FC and 50% FC] from late autumn to early winter on the green period and cold-resistance of Festuca arundinacea. Under the low temperature in winter, treatments 80% FC and 70% FC made the leaf relative water content, POD, CAT, and SOD activities, and chlorophyll, soluble sugar, and free proline contents of F. arundinacea maintained at a higher level, but made the MDA content and electrolyte leakage decreased, resulting in an increased cold-resistance of F. arundinacea. Treatment 80% FC made the green period of F. arundinacea prolonged by 4, 22 and 28 days, as compared with treatments 70% FC, 60% FC, and 50% FC, respectively, and made F. arundinacea have the shortest time to wither in winter and to turn green in spring, with the longest green period. Taking water-saving and water use efficiency into consideration, 70% FC would be the optimum irrigation low limit from late autumn to early winter for F. arundinacea.
Keywords:irrigation low limit  Festuca arundinacea  green period  cold resistance  water use efficiency  
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