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首页> 外文期刊>Forests >Toward Sustainable Cultivation of Pinus occidentalis Swart z in Haiti: Effects of Alternative Growing Media and Containers on Seedling Growth and Foliar Chemistry
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Toward Sustainable Cultivation of Pinus occidentalis Swart z in Haiti: Effects of Alternative Growing Media and Containers on Seedling Growth and Foliar Chemistry

机译：朝着海地普通植物的可持续培养：替代种植媒体和容器对幼苗生长和叶面化学的影响

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摘要

Haiti has suffered great losses from deforestation, with little forest cover remaining today. Current reforestation efforts focus on seedling quantity rather than quality. This study examined limitations to the production of high-quality seedlings of the endemic Hispaniolan pine ( Pinus occidentalis Swartz). Recognizing the importance of applying sustainable development principles to pine forest restoration, the effects of growing media and container types on seedling growth were evaluated with the goal of developing a propagation protocol to produce high-quality seedlings using economically feasible nursery practices. With regard to growing media, seedlings grew best in compost-based media amended with sand. Topsoil, widely used in nurseries throughout Haiti, produced the smallest seedlings overall. Despite a low water holding capacity and limited manganese, compost-based media provided adequate levels of essential mineral nutrients (particularly nitrogen), which allowed for sufficient seedling nutrition. Seedling shoot and root growth, as well as the ratio of shoot biomass to root biomass, were greater in polybags relative to D40s. Results indicate that economically feasible improvements to existing nursery practices in Haiti can improve the early growth rates of P . occidentalis seedlings.
机译：海地遭受了森林砍伐造成巨大的损失，今天剩下的森林覆盖。目前的重新造林努力专注于幼苗量而不是质量。本研究检测了对食人的纯净幼苗的局限性纯净的Hispaniolan杉木（Pinus Occidentalis Swartz）的局限性。认识到应用可持续发展原则对松树森林恢复的重要性，评估了培养媒体和容器类型对幼苗生长的影响，目的是在经济上可行的苗圃措施制定一种生产高质量幼苗的繁殖协议。关于生长媒体，幼苗在用沙子修正的基于堆肥的媒体中最好地增长。在海地苗圃中广泛使用表土，生产了最小的苗木。尽管水持有量低，但锰含量有限，基于钙的媒体提供了足够水平的基本矿物营养素（特别是氮气），这允许足够的幼苗营养。幼苗芽和根生长，以及拍生物质与根生物质的比例相对于D40s更大。结果表明，海地现有幼儿园实践的经济可行的改善可以提高p的早期增长率。 occidentalis幼苗。

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