浙江农业学报 ›› 2022, Vol. 34 ›› Issue (12): 2659-2668.DOI: 10.3969/j.issn.1004-1524.2022.12.09
孙守霞(), 陈虹(
), 吕威, 朴涵琪, 周光辉, 王贺松, 张述斌, 郝金莲
收稿日期:
2021-07-06
出版日期:
2022-12-25
发布日期:
2022-12-26
通讯作者:
陈虹
作者简介:
*陈虹,E-mail:ch333999@126.com基金资助:
SUN Shouxia(), CHEN Hong(
), LYU Wei, PIAO Hanqi, ZHOU Guanghui, WANG Hesong, ZHANG Shubin, HAO Jinlian
Received:
2021-07-06
Online:
2022-12-25
Published:
2022-12-26
Contact:
CHEN Hong
摘要:
为探讨长期叶面降尘对阿克苏地区主栽果树叶片光合性能的影响,于6—8月以苹果(Malus pumila)、核桃(Juglans regia)、枣(Ziziphus jujube)3种果树为试验材料,分别选择自然状态下接受降尘影响的样树5株为降尘处理,以每7 d用清水冲洗一次叶片的样树5株为对照处理,对比分析叶片滞尘量、光合参数、荧光参数和叶绿素含量的变化。结果表明:3种果树叶片滞尘能力为苹果>枣>核桃。3种果树降尘处理植株的叶片叶绿素含量(Chl)、净光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)均显著(P<0.05)低于对照植株,胞间CO2 浓度(Ci)则显著(P<0.05)高于对照植株,并且降尘处理时间越久,对果树叶片叶绿素含量及光合参数的影响越大。此外,3种果树降尘处理植株最大光化学效率(Fv/Fm)、光化学淬灭系数(qP)显著低于对照植株,最小荧光(Fo)、非光化学淬灭系数(NPQ)显著(P<0.05)高于对照植株。3种果树滞尘量与叶片Pn、Chl、Fv/Fm之间呈显著(P<0.05)负相关或极显著(P<0.01)负相关。研究结果表明:降尘处理下限制3种果树叶片净光合速率的主要因素是非气孔因素。降尘使果树叶片PSⅡ反应中心产生一定程度的伤害或可逆性失活,降低了果树叶片的原初光能转换效率,从而影响光合作用的正常进行。研究结果可为阿克苏地区主栽果树的栽培管理提供一定的科学理论依据。
中图分类号:
孙守霞, 陈虹, 吕威, 朴涵琪, 周光辉, 王贺松, 张述斌, 郝金莲. 降尘对阿克苏地区主栽果树叶片光合特性及叶绿素荧光特性的影响[J]. 浙江农业学报, 2022, 34(12): 2659-2668.
SUN Shouxia, CHEN Hong, LYU Wei, PIAO Hanqi, ZHOU Guanghui, WANG Hesong, ZHANG Shubin, HAO Jinlian. Effects of dustfall on photosynthetic characteristics and chlorophyll fluorescence characteristics of major fruit trees in Aksu Region, China[J]. Acta Agriculturae Zhejiangensis, 2022, 34(12): 2659-2668.
树种 Tree | 单位叶面积滞尘量 Amount of dust retention | |||
---|---|---|---|---|
6月June | 7月July | 8月August | 平均值Mean | |
苹果 Malus pumila | 7.24±0.10 a | 9.51±0.12 a | 9.59±0.31 a | 8.78±0.77 a |
核桃 Juglans regia | 5.94±0.27 b | 8.13±0.16 c | 8.19±0.25 b | 7.42±0.74 c |
枣 Ziziphus jujube | 6.19±0.01 b | 8.71±0.12 b | 9.12±0.22 ab | 8.01±0.91 b |
表1 三种果树单位叶面积滞尘量
Table 1 Dustfall amount of three fruit trees leaves mg·cm-2
树种 Tree | 单位叶面积滞尘量 Amount of dust retention | |||
---|---|---|---|---|
6月June | 7月July | 8月August | 平均值Mean | |
苹果 Malus pumila | 7.24±0.10 a | 9.51±0.12 a | 9.59±0.31 a | 8.78±0.77 a |
核桃 Juglans regia | 5.94±0.27 b | 8.13±0.16 c | 8.19±0.25 b | 7.42±0.74 c |
枣 Ziziphus jujube | 6.19±0.01 b | 8.71±0.12 b | 9.12±0.22 ab | 8.01±0.91 b |
图1 降尘对3种果树叶片叶绿素含量的影响 不同大写字母表示同一处理的不同树种间差异显著(P<0.05);不同小写字母表示同一时间段两种处理间差异显著(P<0.05);图中ck(A)为苹果对照处理、da(A)为苹果降尘处理、ck(W)为核桃对照处理、da(W)为核桃降尘处理、ck(J)为枣对照处理、da(J)为枣降尘处理。下同。
Fig.1 Effect of dustfall on chlorophyll content in leaves of three fruit trees Different capital letters indicated that different tree species under the same treatment had significant (P<0.05) differences. Different lowercase letters indicated significant (P<0.05) difference between the two treatments in the same period. In the figure, ck(A) was the control treatment of apple, da(A) was the dustfall treatment of apple, ck(W) was the control treatment of walnut, da(W) was the dustfall treatment of walnut, ck(J) was the control treatment of jujube, da(J) was the dustfall treatment of jujube. The same as below.
图6 三种果树6—8月滞尘量与光合参数及叶绿素荧光参数的相关性分析 *表示在0.05水平上显著相关;**表示在0.01水平上显著相关。
Fig.6 Correlation analysis of stagnation and photosynthetic parameters and chlorophyll fluorescence parameters of three fruit trees from June to August * indicated significant difference at 0.05 level,** indicated significant difference at 0.01 level.
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