[1]肇思迪,娄运生,庞渤,等.UV-B辐射增强下施硅对冬小麦光合特性和产量的影响[J].江苏农业学报,2017,(05):1036-1043.[doi:doi:10.3969/j.issn.1000-4440.2017.05.012]
　ZHAO Si-di,LOU Yun-sheng,PANG Bo,et al.Effects of silicate application on photosynthesis and yield in winter wheat under elevated UV-B radiation[J].,2017,(05):1036-1043.[doi:doi:10.3969/j.issn.1000-4440.2017.05.012]
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UV-B辐射增强下施硅对冬小麦光合特性和产量的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年05期
页码:
1036-1043
栏目:
耕作栽培·资源环境
出版日期:
2017-10-30

文章信息/Info

Title:
Effects of silicate application on photosynthesis and yield in winter wheat under elevated UV-B radiation
作者:
肇思迪1; 2; 娄运生1; 庞渤2; 朱怀卫1; 张祎玮1; 石一凡1
（1.南京信息工程大学气象灾害预报预警与评估协同创新中心/江苏省农业气象重点实验室，江苏南京210044；2.庄河市气象局，辽宁庄河116400）
Author(s):
ZHAO Si-di1; 2; LOU Yun-sheng1; PANG Bo2; ZHU Huai-wei1; ZHANG Yi-wei1; SHI Yi-fan1
(1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing 210044, China;2.Zhuanghe Meteorological Bureau, Zhuanghe 116400,China)
关键词:
UV-B辐射增强; 施硅; 冬小麦; 光合作用; 蒸腾作用
Keywords:
elevated UV-B radiation; silicate application; winter wheat; photosynthesis; transpiration
分类号:
S512.1+1
DOI:
doi:10.3969/j.issn.1000-4440.2017.05.012
文献标志码:
A
摘要:
通过大田试验，研究UV-B增强下施硅对冬小麦光合和蒸腾生理相关参数以及产量的影响。UV-B辐射设2水平，即对照（A，自然光）和增强20%（E）；施硅量设2水平，即对照（Si0，0 kg/hm2 SiO2）和施硅（Si1，200 kg/hm2 SiO2）。结果表明，不施硅条件下（Si0），UV-B辐射处理（E）的不同生育期小麦净光合速率（Pn）、气孔导度（Gs）、胞间CO2浓度（Ci）和蒸腾速率（Tr）比对照处理（A）分别降低 9.21%～1894%、7.56%～2366%、1.24％～1281%和13.88%～2785%，提高气孔限制值（Ls）和水分利用率（WUE） 5.07%～1967%和2.35%～2786%，小麦产量降低908%；UV-B增强下（E），施硅处理（Si1）的不同生育期小麦净光合速率（Pn）、气孔限制值（Ls）和水分利用率（WUE）比不施硅对照（Si0）分别提高 5.23%～1223%、4.61%～4532%和 18.15%～6133%，气孔导度（Gs）、胞间CO2浓度（Ci）和蒸腾速率（Tr）分别降低 6.35%～1094%、5.41%～1101%和6.75%～3051%，小麦产量增加483%。说明UV-B增强可显著降低冬小麦叶片的净光合速率和蒸腾速率，提高水分利用率，降低冬小麦产量，而施硅可缓解UV-B辐射对冬小麦光合作用的抑制，降低蒸腾速率和提高水分利用率，使小麦不减产。
Abstract:
A field experiment was conducted to investigate the effects of silicate application on photosynthesis， transpiration and yield in winter wheat under elevated UV-B radiation. The experiment had two UV-B radiation levels, ambient UV-B (A, ambient) and elevated UV-B radiation (E, elevated by 20%); and two silicate application levels, a control (Si0, 0 kg/hm2, SiO2) and added silicate (Si1, 200 kg/hm2, SiO2). The results indicated that, compared with the group of ambient UV-B radiation in the treatment of no silicate application, the net photosynthesis rate (Pn), stomatal conductivity (Gs), intercellular CO2 concentration (Ci) and transpiration rate (Tr) of wheat at different stages in the group of elevated UV-B radiation decreased by 9.21%-18.94%, 7.56%-23.66%, 1.24%-12.81% and 13.88%-27.85%, respectively, and stomatal limitation (Ls) and water use efficiency (WUE) increased by 5.07%-19.67% and 2.35%-27.86%, wheat yield decreased by 9.08%. Under elevated UV-B radiation, the treatment of silicate application significantly increased Pn, Ls and WUE of wheat at different stages by 5.23%-12.23%, 4.61%-45.32% and 18.15%-61.33%, respectively, decreased Gs, Ci and Tr by 6.35%-10.94%, 5.41%-11.01% and 6.75%-30.51%, increased wheat yield by 4.83%. In conclusion, the treatment of elevated UV-B radiation significantly decreased the Pn and Tr, increased WUE in winter wheat leaves, and decreased wheat yield. However, the treatment of silicate application could alleviate the inhibitory effect of elevated UV-B radiation on Pn, decrease Tr and WUE, and increase the yield of wheat.

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备注/Memo

备注/Memo:
收稿日期：2017-02-27 基金项目：国家自然科学基金(41375159)；江苏省自然科学基金(BK20131430) 作者简介：肇思迪（1992-），女，辽宁沈阳人，硕士研究生，主要从事农业气象研究。(E-mail)575562551@qq.com 通讯作者：娄运生，(E-mail)yunshlou@163.com
更新日期/Last Update: 2017-11-03