问题 问答题 简答题

树木养护中修剪的作用与方法是什么?

答案

参考答案:

修剪是树木抚育管理的重要措施之一,通过修剪,能调节和均衡树势,使树木生长健壮、树形整齐、树姿美观,更重要的是能提高新移植树木的成活率。

修剪的方法包括:

1、抹芽:树木移植后,经过较大强度大的修剪,树干、树枝上会萌发很多嫩芽、幼芽,影响树木生长,对此,在春季萌发时可用手摘除多余嫩芽。冬季修剪后,第二年春季,在枝干切口处又会萌发嫩芽,摘除后,以免主枝无力,树枝丛生交错。总之,在定干以下的枝芽尚未木质化之前应全部摘除,定干以上的无用芽也应摘除。

2、修剪:修剪是指对苗木枝条或主干进行的短截。修剪时要根据苗木树形及生长发育的需要而进行。要剪去病虫枝、内膛枝、竞争枝、过密枝及萌蘖枝,剪口必须平滑,不劈不裂,过粗枝剪口必须涂抹。

3、整形:对于偏冠的或树形不整齐的树木,对一侧生长太强的主枝或侧枝,可去大留小,或者截去强的领导枝,以向外的侧枝代替。如果因一面的枝条缺少造成偏冠,可以用绳索牵引两侧枝补其缺陷。作行道树的松类,在树长大后应提高分枝点,可将一轮几个主枝,隔一个去一个,待伤口初步愈合后再去掉其余几个。

阅读理解

阅读理解。

                                                       Is the servant clever or foolish?

     This is an old story. It was first told long ago. A rich man wanted to make a journey to another town. He

was a businessman. He wanted to take things to sell. He also wanted to take some gold to buy some things

with. He decided to take ten servants with him. They would carry the things to sell and the food to eat on the

journey.

     He was a kind man. He said to one of his servants, "You are the smallest, the thinnest and the weakest of

all my servants. You cannot carry a heavy load. You may choose the lightest load to carry."

     The servant thanked his master. He pointed to the biggest load. This was bread for them to eat on the

journey.

     "You are foolish," said his master. "That is the biggest and heaviest load." But the servant lifted up the load

cheerfully and the journey began. They walked for four hours. Then they stopped for a rest. They all ate some

of the bread. Then there was less bread for the servant to carry. The servant's load grew smaller and lighter

every day. At the end of the journey, the smallest servant had nothing to carry.

1. The rich man wanted to sell things and _____.

A. buy some gold

B. buy some gold with the money

C. buy some things with the gold

D. sell some gold

2. Before the journey began, the rich man said something to _____.

A. a businessman

B. one of his servants

C. the servants

D. some servants

3. The weakest servant _____.

A. asked for his master's advice

B. followed the master's advice

C. refused to accept the master's advice

D. took the advice another servant gave him

4. It took them _____.

A. less than four hours to finish the journey

B. some days to finish the journey

C. no more than four hours to finish the journey

D. only four hours to finish the journey

5. The smallest servant was very _____.

A. clever

B. foolish

C. honest

D. kind

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