Production time and container size for Simarouba amara Aubl. seedlings

Abstract This study aims to determine the effect of nursery production time and container size on the quality standards of production of Simarouba amara seedlings based on nursery and field performance. The work was conducted in two phases: evaluation of nursery growth and field performance. A completely randomized design was used in both phases. Three container sizes (55, 180 and 280cm³) and four nursery production times (105, 125, 135 and 145 days) were tested. Height, collar diameter and survival were evaluated. S. amara seedlings can be produced in a 180 cm³ container with a maximum nursery production time of 125 days. The quality standard for seedlings corresponds to collar diameter ≥ 4.2 and height ≥ 9.1 cm.

摘要：本研究旨在基于苗圃与田间表现，明确育苗时长与容器规格对亚马孙苦木（Simarouba amara）幼苗生产质量标准的影响。本研究分两个阶段开展：第一阶段为苗圃生长性状评价，第二阶段为田间表现评价。两个阶段均采用完全随机试验设计。试验设置3种容器规格（55、180与280cm³）与4个育苗时长梯度（105、125、135及145天），测定指标包括苗高、地径与幼苗存活率。研究结果表明，采用180cm³的容器培育亚马孙苦木幼苗，且育苗时长不超过125天时，可获得符合质量标准的合格幼苗。该幼苗的质量标准为：地径≥4.2，苗高≥9.1cm。