海藻酸钠寡糖灌根处理对小麦光合特性、干物质积累和产量的影响  

Effects of Root-irrigation with Alginate Oligosaccharide Solution on Photosynthetic Characteristics,Dry Matter Accumulation and Yield of Wheat

作　　者：张运红[1] 和爱玲[1] 杨占平[1] 郑春风[1] 杜君[1] 宝德俊[1] 姚健[1] 杨焕焕 ZHANG Yun-hong;HE Ai-ling;YANG Zhan-ping;ZHENG Chun-feng;DU Jun;BAO De-jun;YAO Jian;YANG Huan-huan(Institute of Plant Nutrition,Agricultural Resources and Environmental Sciences,Henan Academy of Agricultural Sciences /Henan Key Laboratory of Agricultural Ecology and Environment,Zhengzhou 450002,China)

机构地区：[1]河南省农业科学院植物营养与资源环境研究所/河南省农业生态与环境重点实验室,河南郑州450002

出　　处：《江西农业学报》2018年第11期1-5,共5页Acta Agriculturae Jiangxi

基　　金：河南省农业科学院自主创新项目"海藻寡糖对作物根际微生态的优化效应及作用机理研究"(2060302);河南省科技公关计划项目"绿色重金属防控钝化剂和叶面阻控剂的研究与应用"(172102310467)

摘　　要：通过盆栽试验,研究了不同浓度(2～6 g/L)海藻酸钠寡糖(AOS)灌根处理对小麦光合特性、干物质积累和产量的影响。结果表明:AOS灌根处理可以显著提高小麦的株高、叶片叶绿素含量、旗叶的净光合速率、气孔导度、蒸腾速率、胞间CO2浓度,显著降低气孔限制值; 2～6 g/L AOS灌根处理使小麦花前同化物积累量增加了11.9%～50.8%,使花后同化物积累量及积累率分别降低了11.7%～18.3%和5.85～15.31个百分点,最终使产量增加了6.6%～23.3%;在3个AOS处理中,以4 g/L AOS处理的增产幅度最大,且主要归因于穗数和千粒重的增加。Pot experiments were conducted to study the effects of root-irrigation with different concentrations （2-6 g/L） of alginate oligosaccharide （AOS） solution on the photosynthetic characteristics, dry matter accumulation and yield of wheat. The results showed that the plant height, functional leaf chlorophyll content, flag leaf net photosynthetic rate, stomatal conductance, transpiration rate and intercellular carbon dioxide concentration of wheat were significantly increased by root-irrigation treatment with AOS, but its stomatal limitation value was significantly decreased by the treatment. The root-irrigation treatments with 2-6 g/L AOS increased the assimilate accumulation before florescence of wheat by 11.9%-50.8%, reduced the assimilate accumulation and accumulation rate after florescence by 11.7%-18.3% and 5.85-15.31 percent, respectively, and finally enhanced wheat yield by 6.6%-23.3%. Among three treatments with AOS, 4 g/L AOS treatment obtained the biggest yield increment, which was mainly attributable to the increase in panicle number and 1000-grain weight.

关 键 词：海藻酸钠寡糖 灌根 小麦 光合特性 干物质积累 产量 

分 类 号：S512.106.2[农业科学—作物学]