草业学报2018，Vol.27Issue(4)：139-149,11.DOI:10.11686/cyxb2017393
不同温度条件下土壤粘着剂对宽叶雀稗种子发芽与幼苗生长的影响
Effects of soil adhesive on seed germination and seedling growth of Paspalum wettsteinii under different temperatures
摘要
Abstract
In order to explore the optimum conditions for seed germination and seedling growth beneficial to vegetation restoration in areas suffering from soil erosion,this study investigated the effects of temperature and soil adhesive on seed germination and seedling growth of Paspalum wettsteinii.An experiment was carried out using the topsoil from an eroding area in Changting County as substrate with 4 different temperatures (15,20,25 and 30 ℃) controlled by an artificial climate incubator and 4 different soil conditions created by different soil adhesive-PAM concentrations (0,0.5,1.0 and 2.0 g · L-1) which were added to the soil.The results showed that the initial seed germination time of P.wettsteinii was advanced from the 10th day to the 3rd day and the terminal seed germination time was advanced from the 26th day to the 9th day after seeding as temperature increased from 15 to 30 ℃.The seed germination rate and germination energy of P.wettsteinii under 20 and 25 ℃ were higher than other temperatures.The germination index,vigor index,seedling growth,and biomass at 20,25,30 ℃ were significantly higher than that at 15 ℃.The addition of soil adhesive increased the seed germination and prolonged germination and growth of P.wettsteinii.The seed germination rate,germination energy,germination index and vigor index were increased by adding low concentrations of adhesive (0.5 or 1.0 g · L-1) to soil,seed germination was restrained by high soil adhesive concentration (2.0 g · L-1).The results of this research provide a useful scientific reference and technical insight for vegetation restoration using P.wettsteinii.关键词
宽叶雀稗/土壤粘着剂/种子发芽/生物量/温度Key words
Paspalum wettsteinii/soil adhesive/seed germination/biomass/temperature引用本文复制引用
王玉珍,黄晓,蔡丽平,郑惠欣,侯晓龙,周垂帆,邹显花..不同温度条件下土壤粘着剂对宽叶雀稗种子发芽与幼苗生长的影响[J].草业学报,2018,27(4):139-149,11.基金项目
福建省中青年教师教育科研项目(JA13467),福建农林大学创新专项基金项目(CXZX2017091)和国家科技支撑计划项目(2014BAD15B02)资助. （JA13467）
