土沉香实生苗苗期生长节律研究

目的]更好地了解土沉香苗期生长节律,培育优质种苗,适应市场需求。方法]对土沉香半年生容器实生苗苗期生长规律进行研究,并分析气象因子对苗木生长的影响,采用有序样本聚类分析法对土沉香容器苗苗期日生长率进行分析。结果]将土沉香半年生实生容器苗的高生长划分为生长前期、速生期、缓生期、生长后期4个阶段,地径生长划分为生长前期、速生期、生长后期3个阶段。应根据不同阶段的生长特性,采取不同的阶段性育苗措施,具体为生长前期注意遮阴、除草、喷药防病、喷淋等日常管护,促进地下根系生长;速生期施用高氮低磷低钾肥,薄肥勤施,保持土壤湿润,全面除草;缓生期减少氮肥施用比例,增加磷钾肥施用比例,适当减少淋水,注意病虫害防治;生长后期停止施肥,减少淋水,以促进苗木木质化,提高抗旱性和抗寒性,继续保持遮阴防霜害。结论]该研究为科学合理地培育土沉香苗木提供了指导。

Growth Rhythm of Aquilaria sinensis Seedlings

Objective] To better understand the growth rhythm of Aquilaria sinensis seedlings and culture high-quality seedlings for market demands.Method] The growth rhythm of the container seedlings of semiannual Aquilaria sinensis was studied,the effect of meteorological factors on seedlings growth was analyzed,and the daily growth rate of the container seedlings was detected by ordered sample cluster analysis method.Result] The growth period of the container seedlings of semiannual Aquilaria sinensis could be di...