首页
登录
职称英语
Trees should only be pruned when there is a good and clear reason for doing
Trees should only be pruned when there is a good and clear reason for doing
游客
2024-08-17
12
管理
问题
Trees should only be pruned when there is a good and clear reason for doing so and, fortunately, the number of such reasons is small. Pruning involves the cutting 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 healthier. You may cut out diseased 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 blanches that are blocking up the centre 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 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 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.
Directions: Answer the following questions with the information given in the passage in a maximum of 10 words for each question. [br] What is the purpose to paint a special substance on the tree when it is pruned?
选项
答案
It is to avoid the entry for disease.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3723300.html
相关试题推荐
要把我们所学的东西用到实践中去,这是至关重要的。Itiscriticalthatweshouldputwhatwehavelearned
BONAFIDEistogenuineasDEFACTOisto______.A、togetherB、actualC、reasonD、
Whatisthemainreasonforhavingthefair?[br][originaltext]W:Areyougoin
Whichnumbershouldreplacethequestionmark?[img]2011q4/ct_eyyjscm_eyyjsciq_0
Whatnumbershouldreplacethequestionmark?[img]2012q2/ct_eyyjscz2010b_eyyjsc
Takethreematchesfromthispatternandleavethreesquares.Whichonesshould
Chinaonlystarteditsnuclearpowerindustryinrecentyears,andshould______n
Whatnumbershouldreplacethequestionmark?[img]2012q2/ct_eyyjscm_eyyjsciq_00
Theboard______oftheopinionthatthenewsshouldn’tbecarriedinthenewspape
Theboard______oftheopinionthatthenewsshouldn’tbecarriedinthenewspape
随机试题
Withthesteadyincreaseintheamountofleisuretimethatpeopleenjoytoda
Theworldisrunningoutofoil,andenergyexpertsbelievethatthere
关于继发性自身免疫病的叙述,哪项是错误的A.大多病因比较明确 B.自身免疫病中
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。( )
女性患者,32岁,月经增多伴发热2周,Hb50g/L,WBC2.2×109
根据民法相关规定,下列法律行为中,可因重大误解而请求撤销的有( )。A.乙误将真
流感患者抗病毒治疗使用时间是A、24小时内 B、32小时内 C、48小时内
值班调控人员或线路工作许可人应将线路停电检修的工作班组数目、()做好记录。(A)
80岁的老李有3个儿子和1个女儿,5年前老伴过世后,老李的身体每况愈下,健康状况
逾期未全部支付出让金的,出让方有权()。A:不需批准而变更合同 B:扣压已交付
最新回复
(
0
)