北方农业学报 ›› 2021, Vol. 49 ›› Issue (1): 65-70.doi: 10.12190/j.issn.2096-1197.2021.01.10

• 土壤肥料·农业生态环境 • 上一篇    下一篇

弱光照下喷施有机碳肥对小麦光合性能的影响

孙蕾1, 索全义1, 赵海宏1, 陈淑慧1, 康文钦2   

  1. 1.内蒙古农业大学 草原与资源环境学院/内蒙古自治区土壤质量与养分资源重点实验室,内蒙古 呼和浩特 010011;
    2.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031
  • 收稿日期:2020-12-15 出版日期:2021-02-20 发布日期:2021-03-23
  • 通讯作者: 索全义(1962—),男,博士,教授,主要从事土壤肥力与植物营养学的研究工作。
  • 作者简介:孙 蕾(1995—),女,硕士研究生,主要从事作物水溶性有机碳肥的研究工作。

Effect of spraying organic carbon fertilizer on photosynthetic characteristics of wheat under weak light

SUN Lei1, SUO Quanyi1, ZHAO Haihong1, CHEN Shuhui1, KANG Wenqin2   

  1. 1. College of Grassland,Resources and Environment,Inner Mongolia Agricultural University/Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resource,Hohhot 010011,China;
    2. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2020-12-15 Online:2021-02-20 Published:2021-03-23

摘要: 【目的】 探究在弱光照下喷施不同有机碳肥对小麦光合性能的影响,为有机碳肥在不良条件下应用提供参考。【方法】 以小麦品种永良4号为材料进行盆栽试验,拔节期进行遮光控制(自然光照的60%),叶面喷施蔗糖(SUC)、腐植酸(HA)、氨基酸(AA),喷施清水(W)为对照,喷施后的2、5、10 d进行光合指标和光合产物的测定。【结果】 弱光照下,喷施SUC、HA和AA 10 d后小麦SPAD值分别较对照提高4.03%、3.63%、3.51%;喷施SUC、HA和AA 2 d后净光合速率(Pn)分别较对照提高32.04%、20.61%、23.91%,5 d后分别较对照提高34.30%、9.76%、4.75%,喷施SUC 10 d后Pn为对照的2.5倍,且差异显著(P<0.05);喷施SUC 5 d后蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)分别较对照提高13.81%、30.07%、14.03%。喷施SUC、HA和AA 10 d后可溶性糖含量分别较对照提高33.20%、18.90%和31.96%,蔗糖含量分别较对照提高11.04%、43.56%和22.70%。【结论】 叶面喷施有机碳肥可以弥补小麦光照不足导致的碳代谢受阻,从而提高小麦叶片的光合特性和光合产物含量。

关键词: 小麦, 弱光照, 有机碳肥, 光合指标, 光合产物

Abstract: 【Objective】 Explore the effects of spraying different organic carbon fertilizers on photosynthetic characteristics of wheat under weak light conditions,and provide a reference for the application of organic carbon fertilizers under adverse conditions.【Methods】 Potted experiment with wheat variety Yongliang No.4 as the test material,shading control at jointing stage(60% of natural light),foliar spraying of sucrose(SUC),humic acid(HA),amino acid(AA),and spraying water(W) as control. And the photosynthetic index and the photosynthetic product were measured at 2,5,10 days after spraying.【Results】 Under weak light,the SPAD value of wheat after spraying SUC,HA and AA for 10 days increased by 4.03%,3.63%,3.51% respectively compared with the control. The net photosynthetic rate(Pn) after spraying SUC,HA and AA for 2 days increased by 32.04%,20.61%,23.91% compared with the control,and increased by 34.30%,9.76%,4.75% respectively after 5 days. Spraying SUC for 10 days Pn was 2.5 times that of the control,and the difference was significant(P<0.05). The transpiration rate(Tr),stomatal conductance(Gs),and intercellular CO2 concentration(Ci) after spraying SUC for 5 days increased by 13.81%,30.07%,and 14.03% respectively compared with the control. The soluble sugar content increased by 33.20%,18.90% and 31.96% after spraying SUC,HA and AA for 10 days compared with the control;the sucrose content increased by 11.04%,43.56% and 22.70% respectively after spraying SUC,HA and AA for 10 days compared with the control.【Conclusion】 Foliar spraying of organic carbon fertilizer could compensate for the obstruction of carbon metabolism caused by insufficient photosynthesis of wheat under weak light,and could increase the photosynthetic index and photosynthetic product content of wheat leaves.

Key words: Wheat, Weak light, Organic carbon fertilizer, Photosynthetic index, Photosynthetic product

中图分类号: 

  • S512.1