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柏木适应性广,耐瘠耐旱,是石灰岩和钙质紫色土地区的主要造林树种。发展柏木生产,主要靠种子育苗造林。多年来,我县都采用春播育苗,但大多数苗木达不到一年出圃要求,生产上都用两年生苗木造林。为了加快荒山绿化进度,我县国营复兴苗圃改春播为秋播育苗,取得了很好的效果。在一般管理条件下,秋播的柏苗,次年秋平均高达30厘米以上,绝大多数都能出圃造林。柏木秋播育苗技术与春播相同比较,好处有以下五点:一、种子发芽快:柏木种子发芽要求一定的温度和水分。我县8、9月份平均气温在20.9℃以上,适合种子萌发。9月份平均降雨量109.7毫米,土壤湿润,也能满足柏木种子萌发的要求。一般播种后10天左右即可发芽出土,比春播出苗提早15～20天。二、可延长生长期:柏木种子秋播出苗后,当年还有两个多月的生长期,到11月中下旬逐渐停止。次年3月又开始生
Cedar adaptability, resistance to drought and drought, limestone and calcareous purple soil is the main afforestation species. Development of cypress wood production, mainly relying on seedling afforestation. Over the years, my county have adopted spring sowing, but most of the seedlings less than a year out of nursery requirements, the production of two year seedlings afforestation. In order to speed up the barren hills greening progress, the county revitalization of spring nursery sowing autumn sowing nursery, and achieved good results. Under the general management conditions, autumn sowing cypress seedlings, the autumn of the following year an average of up to 30 cm above, the vast majority can be nursery Afforestation. Cedar autumn sowing technology and spring sowing the same comparison, the benefits of the following five points: First, the rapid germination of seeds: Cedar seed germination requires a certain temperature and moisture. The average temperature in August and September in our county is above 20.9 ℃, which is suitable for seed germination. The average rainfall in September was 109.7 millimeters, with moist soils that could also meet the germination requirements of cedar seed. Generally about 10 days after sowing germination unearthed earlier than the spring sowing 15 to 20 days. Second, to extend the growing season: cedar seed sowing after autumn, when there are more than two months of growth, gradually stopped in mid to late November. The following year in March and began to give birth