太行山区黏质土壤条件下侧柏容器育苗技术改良试验

太行山区多是以褐土性土为主要土类的黏质土壤。该土壤存在着土质黏重、透气性差、宜板结等特性,采用常规的容器育苗技术,出苗率、成苗率均较低,育苗成效差。1977年开始对常规容器育苗技术的覆土、浇水环节进行改良试验。结果显示:出苗率、成苗率比用常规容器育苗方法平均提高22.8和23.5个百分点,解决了黏质土壤条件下的侧柏容器育苗出苗率、成苗率低的技术难题。

Improvement Tests by Using Containernursing Technique of Platycladus orientalis Under Argillaceous Soil on Taihang Mountainous Region

Most dominant soil type in Taihang Mountainous Region is argillaceous soil, which consists of cinnamon soil in major soild group. This kind of soil had the characters of adhesive weight earthiness, poor air permeability and was easy to harden. Adopting general seedling-raising technique, the emergence percentage and the stocking percent were lower, the results of seedllng-raising was poor. The improvement tests of ring joint with covering soil and water spreading on general seedling-raising were conducted. The results showed that the emergence percentage and the stocking percent increased 22.8% and 23.5% than that with general seedling-raising. Technical problems of lower emergence percentage and the stocking percent of seedling-raising of Platycladus orientalis were solved.