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Proper production Pruning

机译:正确的生产修剪

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摘要

Creating sound shade tree structure in a production nursery can be accomplished with appropriate pruning. Proper pruning and training of young, large-maturing trees has a significant impact on their future growth. Arborists and urban foresters know that young trees properly trained in the nursery with a dominant leader (Photo, left) survie storms heller and arc likc to live longer in the landscape than trees that are not lrained, or those that are improperly pruned. In addition, lives with one dominant leader can be limbed up easily to create clearance for vehicles; whereas those with multiple leaders are difficult to prune. The nursery industry recognized this with the publication American Standard for Nursery Stock (ANSI Z60.1 1990), which calls for a dominant leader in large-maturing shade trees. Some states have adopted more detailed standards or specifications for nursery trees that also call for a dominant leader; these include Grades and Standards for Nursery Plants, Florida Department of Agriculture (1998) and Specification guidelines for container grown trees, Urban Tree Foundation, Visalia, Calif.
机译:通过适当的修剪可以在生产苗圃中创建声音阴影树结构。适当修剪和培训大树龄幼树对其未来的生长会产生重大影响。树木学家和城市林务员知道,在苗圃中由主要领导者训练有素的幼树(照片,左)可以抵抗暴风雨和闪电,使它们在景观中的生存时间比未修剪过的树木或修剪不当的树木更长。此外,与一位主要领导者的生活可以轻松地四分五裂,为车辆通行。而拥有多个领导者的人则很难修剪。苗圃行业通过出版物《美国苗圃标准》(ANSI Z60.1 1990)认可了这一点,该标准要求在大型成熟遮荫树上起主导作用。一些州对苗木采用了更详细的标准或规格,这也要求有主导地位。其中包括加利福尼亚州维萨利亚市Urban Tree Foundation的佛罗里达农业部苗圃植物等级和标准(1998年)和容器生长树木的规格指南。

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    《American Nurseryman》 |2011年第1期|共4页
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  • 正文语种 eng
  • 中图分类 护理学;
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