[1]朱绍丹,陈丽,焦健,等.土壤干旱及生草间作对油橄榄光合特性的影响[J].江苏农业学报,2019,(02):282-288.[doi:doi:10.3969/j.issn.1000-4440.2019.02.006]
　ZHU Shao-dan,CHEN Li,JIAO Jian,et al.Effects of soil drought and grass intercropping on photosynthetic characteristics of olive[J].,2019,(02):282-288.[doi:doi:10.3969/j.issn.1000-4440.2019.02.006]
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土壤干旱及生草间作对油橄榄光合特性的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年02期
页码:
282-288
栏目:
遗传育种·生理生化
出版日期:
2019-04-30

文章信息/Info

Title:
Effects of soil drought and grass intercropping on photosynthetic characteristics of olive
作者:
朱绍丹1; 陈丽1; 焦健1; 李朝周2; 3; 刘文兰1; 赵阳1
（1.甘肃农业大学林学院，甘肃兰州730070；2.甘肃农业大学生命科学与技术学院，甘肃兰州730070；3.甘肃省干旱生境作物学重点实验室/甘肃农业大学，甘肃兰州730070）
Author(s):
ZHU Shao-dan1; CHEN Li1; JIAO Jian1; LI Chao-zhou2; 3; LIU Wen-lan1; ZHAO Yang1
(1.College of Forestry， Gansu Agricultural University， Lanzhou 730070， China；2.College of Life Science and Technology， Gansu Agricultural University， Lanzhou 730070， China;3.Gansu Provincial Key Laboratory of Aridland Crop Science/Gansu Agricultural University， Lanzhou 730070， China）
关键词:
干旱; 生草间作; 油橄榄; 光合特性
Keywords:
drought; grass intercropping; Olea europaea L.; photosynthetic characteristics
分类号:
S565.7
DOI:
doi:10.3969/j.issn.1000-4440.2019.02.006
文献标志码:
A
摘要:
为研究土壤干旱、生草间作交互作用对油橄榄光合特性的影响，并结合相关研究，探讨其内在机制，设置土壤干旱胁迫的水分梯度，以不同生草间作的盆栽油橄榄幼苗为研究对象，使用便携式LI-6400光合仪测定油橄榄的主要光合参数，并测定叶片含水量、光合色素含量、RuBP羧化酶活性及根系活力。结果表明，随着土壤干旱胁迫程度加剧，油橄榄叶片含水量、光合色素含量有一定程度的下降；净光合速率及RuBP羧化酶活性在土壤含水量由18%下降到15%时差异不显著，由12%下降到9%时显著下降。干旱条件下间作生草相比不间作对照组提高了油橄榄根系活力且降低了叶片的蒸腾速率，从而提高了叶片含水量；油橄榄叶片的净光合速率、水分利用效率、光合色素含量和RuBP羧化酶活性也有一定的提高，以土壤含水量12%且间作白三叶+百喜草效果最佳。说明，土壤含水量为12%且间作百喜草＋白三叶有利于改善油橄榄对水分的吸收和光合色素积累，从而提高叶片的光合能力。
Abstract:
In order to study the effects of soil drought and intercropping interaction on the photosynthetic characteristics of olive, and to explore its internal mechanism, the water gradient of soil drought stress was set, and potted olive seedlings intercropped with different grasses were studied. The main photosynthetic parameters of olive were measured using portable li-6400 photosynthetic apparatus, and leaf water content, photosynthetic pigment content, RuBP carboxylase activity and root activity were measured. The results showed that the water content and photosynthetic pigments content of olive leaves decreased to a certain extent with the increase of soil drought stress. The net photosynthetic rate and RuBP carboxylase activity had no significant difference when soil water content decreased from 18% to 15%, but decreased significantly when soil water content decreased from 12% to 9%. Under drought conditions, root activity of olive was increased, and transpiration rate of olive leaves was decreased in the treatment of intercropping with grass compared with those in the control group, thus the water content of olive leaves was increased. The net photosynthetic rate, water use efficiency, photosynthetic pigment content and RuBP carboxylase activity of olive leaves were also increased, and the best effect was obtained by intercropping white Trifolium repens+Paspalum notatum with 12% soil moisture content. In conclusion, soil moisture content of 12% and intercropping with Trifolium repens+Paspalum notatum could improve water absorption and photosynthetic pigments accumulation of olive, thus improving photosynthetic capacity of leaves.

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备注/Memo

备注/Memo:
收稿日期：2018-07-12 基金项目：甘肃农业大学学科建设专项（GAU-XKJS-2018-115、GAU-XKJS-2018-174）；国家自然科学基金项目（31660223）；甘肃省农牧厅农业科技创新项目（GNCX-2016-28） 作者简介：朱绍丹（1993-），女，甘肃兰州人，硕士研究生，研究方向为果树生理生态研究。（E-mail）903975697@qq.com 通讯作者：焦健（1966-），（E-mail）jiaoj@gsau.edu.cn
更新日期/Last Update: 2019-05-05