问题 问答题 论述题

简述合理追肥的依据。

答案

参考答案:

要做到合理追肥,必须从天气、土壤和苗木生长情况进行全面考虑,正确地确定氮、磷、钾和微量元素的比例及追肥方法。

看天追肥应掌握天气炎热多雨时“少量勤施”的原则;气候寒冷时追施有机肥必须经过充分腐熟,气温偏高年份,第一次追肥时间可以提前等。

看土追肥应根据苗木的不同生长时期对营养元素的需要进行。如幼苗期需要氮肥和磷肥。速生期需要大量的氮、磷、钾肥和其他一些必需的微量元素,生长后期则以钾肥为主。

除根据苗木的不同时期进行合理追肥外,还可以根据苗木形态表现,和苗木组织中养分含量的测定,进行植物营养诊断,作为追肥的依据。

阅读理解

Are you a team person? Are you at your best as part of a small, tightly united group of dedicated workers? If so, the future may hold more for you than you think.

High technology, some predicted, would make team work a thing of the past. That’s happening in those areas of business and data processing where one person and a computer can replace a team of workers.

But, elsewhere, teamwork is very much alive. High technology has led to a new type of teamwork in a number of fields, including advertising, scientific research, engineering design, architecture and ocean exploration. Through computer networking, scientists, engineers and technicians at different locations---often thousands of miles apart---can work on the same project at once. They can exchange ideas, try out different designs and test their results.

Examples? An engineering team can now design and try out a robot system, a new manufacturing process, or an entire factory before it is built. An architectural team can do the same with a building or a bridge. A medical team can simulate (模拟) a dangerous operation before performing it on a patient.

Of course, computer–assisted team effort doesn’t end with investigation and simulation. It now usually continues into actual design, manufacturing and testing. “Computer–aided design (CAD) and computer–aided manufacture (CAM) are breaking down barriers between traditional design and manufacturing functions,” explains Dr. Prakash Rao, an engineering manager at General Electric. “Interdisciplinary teams and engineers follow a product from concept to production. Everything is interconnected like a network.”

Sometimes a computer–aided effort can extend beyond production. A team that produces robots may use them to explore space and ocean depth. For high–technology team work, the future seems limitless.

小题1:The underlined part “hold more” most probably means to          .

A.maintain more chances

B.give more rights

C.make more regulations

D.store more information小题2:According to the passage, the writer believes that         .

A.teamwork requires more use of computers than that of human beings

B.teamwork will be completely replaced by computers

C.the concept of teamwork is still alive and no longer the same as the past

D.high technology would make teamwork a thing of the past小题3:The examples given by the writer in Paragraph 4 serve           .

A.to prove high technology has a promising future

B.to explain his idea of new type of teamwork is reasonable

C.to show that it tends to be an end to teamwork soon

D.to indicate the computer—assisted team effort just means investigation and simulation.小题4:Which of the following statements is NOT true according to the passage?

A.Many fields of science and technology are now using computers effectively.

B.No details are given in the passage about barriers between traditional design and manufacturing functions.

C.Experts from different fields have to cooperate to develop a product from concept to production.

D.High technology is nothing but a new type of teamwork plus CAD and CAM.小题5:The author’s attitude to towards the introduction of the computer to teamwork is of         .

A.objection

B.indifference

C.support

D.doubt

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