半干旱地区沙地云杉播种育苗试验

Sowing Seedlings of Picea mongolicain Sandy Land in Semiarid Area

沙地云杉为沙地造林常用的一个树种。通过开展沙地云杉播种育苗试验,研究了播种方式、播种时间、遮阴方式等对沙地云杉播种出苗量及生长情况的影响。结果表明:早播种、高床、遮阴有利于苗木地径、苗高的生长;影响苗木地径生长的主要因素是地面温度、最高温度、15cm土层温度;影响苗高的主要因素为地面温度、地面最高温度、20cm土层温度。

Picea mongolicais a tree species commonly used in sandy land afforestation.By carrying out sowing and nursery trials of Picea mongolica,the effects of sowing methods,sowing time and shading methods on seedling emergence and growth of spruce were studied.The results show:Early seeding,high-bed and shading are conducive to the growth of nursery ground diameter and seedling height.The main factors affecting the seedling diameter growth are ground temperature,maximum temperature and soil temperature of 15 cm.The main factors affecting seedling height are ground temperature and ground level temperature,20 cm soil temperature.