首页
登录
职称英语
Why should pruning be done? [br] [originaltext] Trees should only be prune
Why should pruning be done? [br] [originaltext] Trees should only be prune
游客
2023-11-15
65
管理
问题
Why should pruning be done? [br]
Trees should only be pruned when there is a good and clear reason for doing so and the number of such masons is small. Pruning involves the cut ting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
First, pruning may be done to make 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 heavier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. Removing branches that are blocking up the center and so preventing the free movement of air may en courage the health of a tree.
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 is a race between the healing and the disease 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 essential 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 hours and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually done ih winter, for then you can see the shape of the tree clearly without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.
选项
A、To give practical instruction for pruning a tree.
B、To give a gardener description of pruning.
C、To explain how trees develop disease.
D、To discuss different methods of pruning.
答案
B
解析
本文是篇科普文章,主要就是向园艺工人介绍剪枝的作用以及如何正确地剪枝和进行剪枝后的护理工作,因此答案是 B。
转载请注明原文地址:https://tihaiku.com/zcyy/3188175.html
相关试题推荐
Thisyear’sfederalbudgetdeficitwillbe_______[br][originaltext]Thisy
Whousedtolivetogetherinanextendedfamily?[br][originaltext]Thefa
Whousedtolivetogetherinanextendedfamily?[br][originaltext]Thefa
Whatcanbelearnedfromthepassage?[br][originaltext][17D]Marriagein
ThepurposeofMagellan’sexpeditionwas[br][originaltext]Earlyinthe16
ThepurposeofMagellan’sexpeditionwas[br][originaltext]Earlyinthe16
ThepurposeofMagellan’sexpeditionwas[originaltext]Earlyinthe16thcen
In1847mostcountriesoftheworldwere[br][originaltext]Anymistakemad
In1847mostcountriesoftheworldwere[br][originaltext]Anymistakemad
Whatisthepossiblerelationshipbetweenthetwospeakers?[br][originaltext]
随机试题
IFBNO.CMC9301308ThePeople’sRepublicofChinaChinaNationalMachineryImpo
A.cosx-sinx+C B.sinx+cosx+C C.sinx-cos
在立即数寻址方式中,立即数放在()A.数据段 B.代码段 C.堆栈段 D.
用户使用软件时难免会出现一些操作错误。在设计用户界面时必须考虑出错处理,使用户不
有一根预制混凝土桩,采用锤击法施工,桩尖需穿透--密实砂层进人软黏土层,在穿透的
药物的两重性是指( )A.治疗作用与副作用 B.防治作用与不良反应 C.对
用于权属登记的房产测量成果备案时.下列内容中.房地产行政主管部门不需审核的是(
员工流失是员工()离开组织的行为。A.被迫 B.主动 C.岗位不对口 D.
土洞形成的过程中,水起的主要作用为下列哪个选项( )A.水的渗透作用 B.
股份有限公司董事、高级管理人员可以兼任监事。()
最新回复
(
0
)