水分和腐植酸对燕麦籽粒产量和β-葡聚糖含量的协同提升效应  

Synergistic effect of moisture and foliar-applied humic acid on oat grain yield andβ-glucan content

作　　者：李英浩 王琦[1] 赵宝平[1] 柳妍娣 米俊珍[1] 武俊英[1] 刘景辉[1] LI Ying-Hao;WANG Qi;ZHAO Bao-Ping;LIU Yan-Di;MI Jun-Zhen;WU Jun-Ying;LIU Jing-Hui(Agricultural College,Inner Mongolia Agricultural University/Inner Mongolia Coarse Grain Engineering Research Center,Hohhot 010019,Inner Mongolia,China)

机构地区：[1]内蒙古农业大学农学院/内蒙古自治区杂粮工程技术研究中心,内蒙古呼和浩特010019

出　　处：《作物学报》2022年第10期2663-2670,共8页Acta Agronomica Sinica

基　　金：国家自然科学基金项目(31560373,31960378);财政部和农业农村部国家现代农业产业技术体系建设专项(CARS-07);国家重点研发计划国际合作重点专项(2018YFE0107900)资助。

摘　　要：为明确水分和腐植酸协同作用对燕麦的增产提质效应,本试验以蒙农大燕1号和内燕5号燕麦品种为研究对象,分别设置旱作和有限灌溉2个水分处理,分析喷施腐植酸对燕麦叶片光合特性、籽粒产量和β-葡聚糖含量的影响。结果表明:孕穗和开花期喷施腐植酸后可以显著提高燕麦叶片的光合特性,与灌水条件下相比,蒙农大燕1号叶片的光合速率在旱作条件下的提高幅度更大,提高了31.78%~123.72%,而内燕5号在旱作和灌水条件下增幅基本一致;在旱作条件下喷施腐植酸后两品种籽粒产量和β-葡聚糖含量均显著提高,尤其以内燕5号的提高幅度更大,分别提高了5.60%~74.68%和11.24%~19.56%;与旱作处理相比,在灌水条件下喷施HA,两品种籽粒β-葡聚糖含量提高幅度更大,分别提高了11.30%~33.29%和7.76%~43.81%。通过各指标之间的相关性分析,蒙农大燕1号品种叶片的光合速率与籽粒β-葡聚糖含量、穗长、单穗小穗数、单穗粒重、千粒重及籽粒产量呈显著正相关关系,籽粒产量与穗长、单穗小穗数、单穗粒重、千粒重呈显著正相关关系,籽粒β-葡聚糖与单穗小穗数、千粒重和籽粒产量呈显著正相关关系(P<0.05),而内燕5号品种籽粒β-葡聚糖含量与各产量构成因子正相关,但未达到显著水平。综上说明,水分和腐植酸协同作用可有效改善燕麦叶片的光合性能,并且协同提高籽粒产量和β-葡聚糖含量。In order to clarify the synergistic effect of water and humic acid on the yield and quality improvement of oats,we set two water treatments of dry farming and limited irrigation,respectively,and analyzed the effects of humic acid spraying on photosynthetic characteristics of oat leaves,grain yield,andβ-glucan content using the oat varieties Mengnong Dayan 1 and Neiyan 5 as the research materials.The results showed that the application of humic acid at the booting and flowering stages could significantly improve the photosynthetic characteristics of oat leaves.Compared with irrigation,the photosynthetic rate of Mengnong Dayan 1 leaves increased by 31.78%–123.72%in dry farming,while the increased rate of Neiyan 5 leaves was basically the same as that in dry farming and irrigation.The grain yield andβ-glucan content of the two varieties were significantly increased by spraying humic acid in dry farming,especially Neiyan 5,which increased by 5.60%–74.68%and 11.24%–19.56%,respectively.Compared with dry treatment,the content ofβ-glucan increased by 11.30%–33.29%and 7.76%–43.81%,respectively,when HA was sprayed under irrigation.Through the analysis of the correlation between the indexes,the photosynthetic rate,β-glucan content,spike height,spikelet number per spike,grain weight per plant,thousand-grain weight,and grain yield were significantly positive correlation of Mengnong Dayan 1,the grain yield,spike height,spikelet number per spike,grain weight per plant,and thousand-grain weight were significantly positive correlation,and there was a significant positive correlation betweenβ-glucan content,spikelet number per spike,thousand-grain weight,and grain yield(P<0.05).While there was a positive correlation betweenβ-glucan content and grain yield components of Neiyan 5,but it did not reach a significant level.In conclusion,the synergistic effect of water and humic acid can effectively improve the photosynthetic performance of oat leaves,and synergistically increase grain yield andβ-glucan content.

关 键 词：水分 腐植酸 燕麦 产量 Β-葡聚糖 

分 类 号：S512.6[农业科学—作物学]