摘要 | 测定了深圳市仙湖植物园中3种不同生长状态的少刺苏铁(Cycas miquelii O. Warburg)叶片及土壤中Fe、Mg、Zn和Mn的含量以及土壤理化性状,发现土壤有机质含量及速效N、速效P和速效K含量对少刺苏铁的生长影响不明显,而土壤中微量元素Fe、Mg、Zn和Mn的含量与其生长有密切关系,其中生长良好的植株对Fe的需求量较高,对Mg和Zn的需求量也较大;在中性偏弱酸的土壤上少刺苏铁生长较好。此外,对少刺苏铁栽培土壤的改良也提出了可行性建议。 |
Abstract | The physical-chemical characters of soils and contents of Fe, Mg, Mn, Zn in soils and leaves of Cycas miquelii O.Warburg were measured in Fairy Lake Botanical Garden of Shenzhen City. The results showed that effects of contents of organic matter, available nitrogen, phosphorus and kalium in soils on growth of C. miquelii were not evidence. But microelement contents, such as Fe, Mg, Zn and Mn, had great affinity to growth of C. miquelii. Much Fe was needed for fine one, so were Mg and Zn. Weak acidic soil was fit for C. miquelii growth. And then some feasible suggestions were given for best growth of C. miquelii. |
关键词 | 微量元素; 少刺苏铁; 仙湖植物园; 土壤改良; |
Key words | microelement; Cycas miquelii O.Warburg; Fairy Lake Botanical Garden; soil improvement |
作者 | 李 楠1,陈考科2,顾蔚蓝3,崔大方4 |
所在单位 | 1.深圳仙湖植物园,广东深圳518027; 2.阳江市林业科学研究所,广东阳江529500; 3.华南农业大学测试中心,广东广州510642; 4.华南农业大学生命科学学院,广东广州510642) |
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基金项目 | 深圳市科技局资助项目“苏铁类植物迁地保护和繁殖研究及推广应用”; |