欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (28): 38-45.doi: 10.11924/j.issn.1000-6850.2014-0868

• • 上一篇    下一篇

施用保水剂对4种绿化植物叶片结构和功能性状的影响

有祥亮,沈烈英,曹海东,秦勇惠   

  1. 上海市园林科学研究所,上海市园林科学研究所,上海市浦东新区环保市容局,上海老港废弃物处置有限公司浦东分公司
  • 收稿日期:2014-03-27 修回日期:2014-03-27 接受日期:2014-08-26 出版日期:2014-10-15 发布日期:2014-10-15
  • 通讯作者: 有祥亮
  • 基金资助:
    上海市科委社会发展领域科技计划项目“垃圾填埋场土壤修复与植被景观营建关键技术研究与示范”(12231202400)；上海市浦东新区科 委科技发展基金创新资金项目“黎明填埋场基于气味改善的植被恢复研究与示范”(PKJ2012-C09)

Effects of Different Rate of Super Absorbent Polymer on Leaf Structural and Functional Traits of 4 Greening Plants

  • Received:2014-03-27 Revised:2014-03-27 Accepted:2014-08-26 Online:2014-10-15 Published:2014-10-15

摘要： 与CK相比，施用保水剂对‘紫花’海棠、乌桕、红叶石楠、梓树叶片的结构性状（叶面积、叶绿素含量、比叶面积、气孔导度）和功能性状（光合速率、蒸腾速率、水分利用效率）均有显著影响。4 种供试植物在高温干旱环境下，0.1%用量保水剂能显著改善叶片结构和功能性状。而随保水剂用量的继续增加，4 种植物的叶性状变化趋势并不一致，其中在0.2%保水剂用量下，红叶石楠和梓树叶面积、叶绿素含量、比叶面积、气孔导度、光合速率、蒸腾速率继续显著高于CK或0.1%用量，在0.3%用量下，2 种植物上述指标大多接近于0.2%用量，而‘紫花’海棠和乌桕在0.2%~0.3%用量下已显著下降到接近CK水平。这表明，红叶石楠和梓树比‘紫花’海棠和乌桕较能适应水分较多的环境。而‘紫花’海棠和乌桕水分利用效率在CK条件下显著增大，则表明两者较能适应干旱环境。4 种植物比叶面积在CK和不同保水剂用量下的显著变化表现出适宜水分条件下植物获取资源促进生长的能力和水分胁迫下的适应性。

关键词: 生理生化指标, 生理生化指标

Abstract: This study was conducted to investigate effects of different rate of super absorbent polymer (SAP) on leaf structural and functional traits of 4 greening plants (i.e. Malus‘Purple’, Sapium sebiferum, Photinia × fraseri, Catalpa bignonioides). The results showed that the SAP had significant effect on the leaf structural traits (such as leaf area, chlorophyll content, specific leaf area and Gs) and functional traits (such as Pn, Tr and WUE) of Malus‘Purple’, Sapium sebiferum, Photinia × fraser and Catalpa bignonioides. 0.1% SAP content added to the soil could remarkably improve leaf structural and functional traits of the 4 greening plants. Applied with 0.2% SAP content, Photinia × fraser and Catalpa bignonioides had higher leaf area, chlorophyll content, specific leaf area, Gs, Pn and Tr than that of the CK or applied with 0.1% SAP, while applied with 0.3% SAP content, the above-mentioned index were close to that of 0.2% SAP content. Meanwhile, applied with 0.2%- 0.3% SAP content, above- mentioned index of Malus‘Purple’and Sapium sebiferum were significantly lower than that of the 0.1% SAP content and close to that of the CK. These indicated that Photinia × fraseri and Catalpa bignonioides more adapted to the moist soil than Malus‘Purple’and Sapium sebiferum. But Malus‘Purple’and Sapium sebiferum more adapted to dry soil than Photinia × fraseri and Catalpa bignonioides because of their WUE magnified significantly in CK than that of SAP applied. The significant change of specific leaf area between CK and SAP applied with different rates in the 4 greening plants indicated the capability of obtaining resource and promoting growth in moderate soil moisture and adaptation to water stress.