A causal diagnosis is conducted on the yellows of Machilus thunbergii by means of the soil-plant chemical analysis, enzyme diagnosis, and field experiments, which grow in the saline-alkali soil at Zhujiajian Nursery Stock Base.

• 摘要采用土壤植物化学分析、酶学诊断和田间试验对舟山市朱家尖苗木基地盐碱地土壤红楠黄化成因进行了研究。