壳寡糖对硬水灌溉下黄瓜育苗效果的影响  

Effects of Chitosan Oligosaccharide on Cucumber Seedling Growth under Hard Water Irrigation

作　　者：王嘉欣 高艳明[1] 李建设[1] 李露露 李稼润 王花 WANG Jiaxin;GAO Yanming;LI Jianshe;LI Lulu;LI Jiarun;WANG Hua(College of Agriculture,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《蔬菜》2022年第3期13-20,共8页Vegetables

基　　金：宁夏大学校级大学生创新创业训练计划项目(2020107490362)。

摘　　要：为筛选出最适宜培育黄瓜壮苗的壳寡糖处理方式及浓度,以"津春4号"黄瓜为试验材料,用不同浓度壳寡糖浸种(200、400倍)及苗期叶面喷施(500、800倍)组合处理来调控黄瓜幼苗的生长。结果表明:用硬水浸种加苗期进行3次800倍壳寡糖溶液喷施处理的壮苗效果最优,其相比于对照,最大叶面积、叶绿素含量升高,根冠比提高21.4%,根体积增大39.6%,根系活力增强50.7%,壮苗指数升高31.6%,G值提升20.0%,脯氨酸含量增加67.7%,丙二醛含量降低45.4%,所以推荐使用硬水浸种加苗期喷施800倍壳寡糖溶液培育壮苗,且分别在子叶平展期、1叶1心期、2叶1心期各喷施1次为宜。In order to screen out the most suitable treatment method and concentration of chitosan oligosaccharide for cucumber seedling cultivation,taking cucumber cultivar ’Jinchun No.4’ as material,the test was carried out by using combination treatments of different concentrations of chitosan oligosaccharide soaking (200,400 times) and foliar spraying (500,800 times) to regulate the growth of seedling.The results showed that seed soaking with hard water and three times of spraying 800 times chitosan oligosaccharide solution at seedling stage had the best effect on strong seedlings.Compared with the control,the maximum leaf area and chlorophyll content all increased,the ratios of root to shoot,root volume,root activity,seedling index,G value and the contents of proline increased by 21.4%,39.6%,50.7%,31.6%,20.0% and 67.7%,respectively.Content of malondialdehyde decreased by 45.4%.Therefore,it was recommended to seeds soaking with hard water and spraying 800 times chitosan oligosaccharide solution at seedling stage to cultivate strong seedlings,and spraying once at cotyledon flat expansion period,one leaf and one heart period and two leaves and one heart period,respectively.

关 键 词：壳寡糖 黄瓜 幼苗 硬水灌溉 浸种方式 叶面喷施 

分 类 号：S642.2[农业科学—蔬菜学]