侧柏(Biota Orientalis)是华北地区绿化和美化环境的重要树种。河南农学院森林苗圃历年来进行了多次的丰产试验,都获得了很大成绩,特别是今年的丰产试验,创造了最高纪录。据现在统计,每平方米产苗1,080株,折合亩产72万株,比林业部规定的产量约高4倍。苗木高度26～49厘米,地径0.3～0.5厘米,比部规定的质量约提高一倍。现在苗木还 Biota Orientalis is an important tree species for greening and landscaping in North China. Henan Agricultural College forest nurseries over the years conducted many high yield test, have achieved great success, especially this year’s high yield test, and created the highest record. According to statistics, there are 1,080 plants per square meter of seedlings, equivalent to 720,000 mu per mu, which is about 4 times higher than that stipulated by the Ministry of Forestry. Seedling height 26 ~ 49 cm, diameter 0.3 ~ 0.5 cm, than the Ministry of the provisions of the quality of about doubled. Seedlings now also