草原锦鸡儿直播造林模式的比较研究  

Comparisons of Direct Seeding Modes of Caragana pumila Pojark

作　　者：陈玉萍[1] 黄俊华[1] 胡成志 姚雨仙[1] 

机构地区：[1]新疆农业大学林学与园艺学院,新疆乌鲁木齐830052 [2]乌鲁木齐县水电林业局,新疆乌鲁木齐县830036

出　　处：《中国水土保持》2014年第11期53-57,71,共5页Soil and Water Conservation in China

基　　金：国家自然科学基金项目(31160168);新疆维吾尔自治区森林培育重点学科资助项目

摘　　要：新疆天然分布的草原锦鸡儿在西北地区植物群落中占据重要地位,作为新疆荒山绿化的先锋植物,对新疆植被恢复具有潜在价值。采用随机区组试验,研究不同播期、不同直播模式、不同播种量对草原锦鸡儿出苗率及保存率的影响,结果表明:春播出苗率及保存率均高于秋播,最高出苗率92.7%,保存率97%;播种模式中先覆膜后播种模式出苗率最高,春播以5粒/穴播种量出苗情况最好,出苗株数随着播种量的增加而增加,而出苗率随着播种量的增加反而降低。因此,在高寒缺水地区,草原锦鸡儿采取春播5粒/穴先覆膜后播种模式,可以改善微环境,提高出苗率和保存率。The naturally distributed Caragana pumila Pojark. of Xinjiang occupies an important position in plant communities in northwestern China. Being as the pioneer plant for greening the barren hills of Xinjiang,it has potential value for vegetation rehabilitation of Xinjinag. The paper studied the influence of different seeding dates,different direct seeding modes and different seeding amounts to the rates of germination and preservation of Caragana pumila Pojark. by using randomized block experiments. The outcomes show that a) the rates of germination and preservation of spring sowing are higher than that of autumn sowing. The highest germination rate is 92. 7% and preservation rate is97%; b) among the seeding modes,the germination rate of first film covering and seeding second is the highest and the germination situation of 5 seeds / hole of spring sowing is the best. The number of germination increases along with the increase of seeding amount and the rate of germination decreases along with the increase of seeding amount. Thus,to adopt the mode of first film covering and seeding second of 5seeds / hole of spring sowing in the frigid and arid area can improve micro-environment and increase the rates of germination and preservation.

关 键 词：草原锦鸡儿 播期 播种模式 播种量 出苗率 保存率 

分 类 号：S793[农业科学—林木遗传育种]