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首页> 外文期刊>Range Management & Agroforestry >Effect of initial top height on survival and growth of Grewia optiva and Ulmus villosa
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Effect of initial top height on survival and growth of Grewia optiva and Ulmus villosa

机译：初始最高高度对黄连和毛榆的存活和生长的影响

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摘要

Grewia optiva and Ulmus villosa are important social forestry/agroforestry species providing fodder, fuel, fiber and small timber. Inspire of immense popularity and multiplicity of uses of these potential species, the grading of the seedlings based on morphological criterion i.e top height has not been standardized. The success of plantation requires quality stock. The stock grades have been reported to influence not only the outplanting survival but also the forest productivity for long after planting (Blair and Cech, 1974). The desirable morphological, physiological and economic traits of best seedlings may change with management objectives (South and Mexal, 1984). The importance of seedling top height in the subsequent establishment of seedlingshas been realised. Therefore, the present investigation was undertaken with the objective to determine the influence of seedling top height on the outplanting survival of some social forestry species.
机译：Optima optiva和Ulmus villosa是重要的社会林业/农林业物种，提供饲料，燃料，纤维和小木材。为激发这些潜在物种的广泛流行和用途的多样性，基于形态标准（即最高高度）的幼苗分级尚未标准化。种植成功需要优质的库存。据报导，林木等级不仅影响移栽的存活率，而且影响种植后长期的森林​​生产力（Blair and Cech，1974）。最佳苗木的理想形态，生理和经济特性可能会随管理目标而改变（South and Mexal，1984）。人们意识到，在随后建立幼苗的过程中，幼苗最高高度的重要性。因此，本研究旨在确定幼苗最高高度对某些社会林业树种移栽存活的影响。

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