抗旱种衣剂对大豆抗旱性及产量性状的影响  

Effects of Drought Resistant Seed Coatings on Drought Resistance and Yeild of Soybean

作　　者：李玉中[1] 钟秀丽[1] 李天华[1] 

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《中国农学通报》2007年第2期437-440,共4页Chinese Agricultural Science Bulletin

基　　金：国家"十一五"科技支撑计划课题"北方农业干旱综合调控技术研究"(2006BAD04B06)资助

摘　　要：为评价两种抗旱种衣剂在大豆上的抗旱与增产作用,开展田间试验,对两种制剂处理下大豆的种子萌发、生长、产量以及与抗旱性相关的指标进行观测。结果表明,两种抗旱种衣剂均有抗旱增产的功能。抗旱种衣剂1号处理下,与对照相比,大豆的种子出苗率提高4.8%,平均株高增加4cm,单株根瘤数量增加13个,产量增加7.3%,净光合速率增加1.4μmolCO2/(m2·s)。种衣剂2号处理下,大豆的种子出苗率提高5.2%,平均株高增加5.6cm,单株根瘤数量增加65个,产量增加6.3%,蒸腾速率、叶片失水速率下降,根体积、根冠比增加。表明种衣剂2号的抗旱效果更强,种衣剂1号的增产效果更明显。Field experiments were carried out to evaluate the effects of 2 kinds of drought resistant seed coatings （DRSC） on enhancing drought resistance and yield. Seed germination, growth, yield formation and some parameters relative to drought resistance were investigated and measured in soybean plants treated with and without DRSC. The results showed that both the 2 kinds of DRSC effectively promoted drought resistance and yield in soybean. For soybean plants treated with DRSC 1, seed germination increased by 4.8%, plant height, 4cm, root nodule numbers, 13, yield, 7.3%, and net photosynthetic rate was significantly higher than cK. While for those treated with DRSC 2, seed germination increased by 5.2%, plant height, 5.6cm, root nodule numbers, 65, yield, 6.3%, transpiration rate and water loss rate of leaves decreased, root volume and root/shoot ratio all increased. The study demonstrated that DRSC 2 is more effective in improving drought resistance, while DRSC 1, in promoting photosynthesis and increasing yield.

关 键 词：抗旱种衣剂 大豆 抗旱性 增产 

分 类 号：S42[农业科学—植物保护]