百度作业网英语阅读翻译39A,接纳人工翻译,在线等
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英语阅读翻译39A,接纳人工翻译,在线等
Trees should only be pruned when there is a good and clear reason for doing so. First pruning may be done to be sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseaed or dead wood, or branches that are rubbing against each other and thus causing wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there as to whether the tree will live or die , so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is necessary to make the area which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hour and then paint it with one of the substances produced especially for this purpose. Pruning is usually done in winter, for then you can see the shape of the tree clearly without interference from the leaves and it is, too, very unlikely that the cuts you make will bleed. If this does happen,it is, of course,impossible to paint them properly.
Trees should only be pruned when there is a good and clear reason for doing so. First pruning may be done to be sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseaed or dead wood, or branches that are rubbing against each other and thus causing wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there as to whether the tree will live or die , so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is necessary to make the area which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hour and then paint it with one of the substances produced especially for this purpose. Pruning is usually done in winter, for then you can see the shape of the tree clearly without interference from the leaves and it is, too, very unlikely that the cuts you make will bleed. If this does happen,it is, of course,impossible to paint them properly.
树木的修剪是有目的的,首先,是要使树长成想要的形状和大小,达到合适的高度,同时有助于枝叶弱的部分加速生长,使树冠成型,其次,修剪能使树木更茁壮,把干死的,相互擦碰的树枝剪掉,以免造成损伤,由于中间顶部的树枝影响空气流通,把他们剪掉有利于树木的成长,
修剪的不足之处是会留下伤疤,使得树木易受感染,但这种伤疤很快就会长好,修剪后的树木是有危险期的,对树木的成活很关键,因此每个园艺师要特别注意,尽可能减少树木的死亡,修剪的伤疤尽量保持平整,洁净,这有助于加速愈合,剪断处晾晒几个小时后,涂上专用的物质（药膏）,修剪通常在冬天进行,因为冬天没有树叶遮挡,树的形状一目了然,再用就是冬天的伤疤不流血,如果流血,涂药膏的效果就不可能好,
修剪的不足之处是会留下伤疤,使得树木易受感染,但这种伤疤很快就会长好,修剪后的树木是有危险期的,对树木的成活很关键,因此每个园艺师要特别注意,尽可能减少树木的死亡,修剪的伤疤尽量保持平整,洁净,这有助于加速愈合,剪断处晾晒几个小时后,涂上专用的物质（药膏）,修剪通常在冬天进行,因为冬天没有树叶遮挡,树的形状一目了然,再用就是冬天的伤疤不流血,如果流血,涂药膏的效果就不可能好,