不同贮藏条件和发芽方法对羊草种子萌发的影响  

Effects of storage conditions and sowing methods on seed germination of Leymus chinensis.

作　　者：马红媛[1] 梁正伟[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所

出　　处：《应用生态学报》2007年第5期997-1002,共6页Chinese Journal of Applied Ecology

基　　金：吉林省与中国科学院科技合作项目(2005SYHZ0007);吉林省生态恢复与生态系统管理重点实验室项目(K09M6);中国科学院知识创新工程重点资助项目(KZCX-SW-19).

摘　　要：贮藏条件(温度、水分和贮藏介质)和发芽方法(发芽床种类×播种方法)是影响羊草种子萌发的重要因素.研究了4种贮藏条件(4℃低温干贮、自然室温干贮和非盐碱土低温湿贮、盐碱土低温湿贮)、3种发芽床(滤纸、非盐碱土与盐碱土)和2种播种方法(表面与内部播种)对羊草种子发芽率的影响.结果表明,与室温干贮相比,低温干贮可以提高羊草种子的发芽速率和整齐度,但对最终发芽率没有显著影响.盐碱土低温湿贮显著降低羊草种子发芽率(28.8%);非盐碱土低温湿贮可显著提高羊草种子的发芽率(73.7%).6种组合发芽方法的发芽率大小和顺序依次为:非盐碱土表发芽法(89.3%)>纸间发芽法(68.0%)>纸上发芽法(64.0%)>非盐碱土内发芽法(61.3%)>盐碱土表发芽法(25.6%)>盐碱土内发芽法(6.0%).This paper studied the effects of four storage conditions （ dry storage at 4 ℃, dry storage at room temperature, storage in moist non- saline-alkali soil at 4 ℃, and storage in moist saline-alkali soil at 4 ℃ ）, three germination substrates （filter paper, non- saline-alkali soil, and saline-alkali soil）, and two sowing methods （sowing on and in the substrates） on the seed germination of Leymus chinensis. The results showed that compared with the dry storage at room temperature, dry storage at 4 ℃ improved the germination velocity significantly, but had less effect on germination rate. When stored in moist saline-alkali soil, the germination rate was only 28. 8% , in contrast to 73.7% in non- saline-alkali soil. With different sowing methods, the seed germination rates of L. chinensis was in the order of sowing on the surface of non- saline-alkali soil （ 89. 3 % ） 〉 between papers （68.0%） 〉on papers （64.0%） 〉in non- saline-alkali soil （61.3%） 〉on the surface of saline-alkali soil （25.6%） 〉 in saline-alkali soil （6. 0% ）.

关 键 词：羊草 发芽率 低温 盐碱土 发芽床 播种方法 

分 类 号：S543.9[农业科学—作物学]