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本研究采用定点调查的方法 ,连续 2年对隔离带桧柏生长状况进行的调查分类 ,与此同时还在不同长势地段进行的土壤剖面调查 ,土壤理化性状分析 ,以及病虫害调查等项工作 .结果表明 ,在绝大多数情况下 ,桧柏长势差的原因是由于不良的土壤物理性状造成的
In this study, we investigated and classified the growth of Sabina przewalskii for two consecutive years by using the fixed-point survey method, investigated the soil profile, analyzed the soil physical and chemical properties and investigated the diseases and insect pests in different growing areas. Suggests that in most cases the reason for the poor growth of Sabina is due to poor soil physical properties