樟子松是沙区较有前途的造林树种,但育苗困难较多。近年来,我们在伊克昭盟东胜县就育苗中存在的主要技术问题进行了研究。现总结如后。一、圃地准备适时播种我盟沙区最大的特点是蒸发量大于降水量5-10倍(蒸发量2,000-2,500毫米,降水量250-400毫米),土壤多偏碱性。一般苗圃地应注意选择在pH值7.5以下的沙壤土为宜。苗床应筑成高低床合并式, Pinus sylvestris var. Mongolica is a more promising afforestation tree species, but more difficult to nurture. In recent years, we have studied the main technical problems in seedling breeding in Dongsheng County of Yijiu League. Now summarize. I. Preparing land for planting in a timely manner The biggest feature of the sand area of ​​our League is that the evaporation is more than 5-10 times of the precipitation (evaporation of 2,000-2,500 mm, precipitation of 250-400 mm) and the soil is more alkaline. Common nursery should pay attention to choose the pH value of sandy loam 7.5 below is appropriate. Seedbed should be built into the bed combined type,