问题 问答题 简答题

盆栽果树“六合一”叶面施肥技术具体指什么?

答案

参考答案:

“六合一”叶面施肥是指将6种不同性质的化学药物同时混合在一起,更科学、更节约成本、更能预防病虫害的发生、更加利于花芽分化和提高坐果。

具体指:“六合一”=0.3%尿素(提高氮素水平)+0.3%磷酸二氢钾(提高磷钾水平)+保花保果药(如赤霉素,硼酸)+杀虫剂(根据当时的具体情况而定)+杀菌剂(根据当时的具体情况而定)+商品叶面肥(能补充果树的微量元素和氨基酸等)

阅读理解

阅读理解。

     What are your hobbies? Many children like stamp-collecting in their spare time. Do you know? Stamp

collecting didn't start until 1854.   As time passes,  there are more  and more  stamp-collectors.  Not only

children  but  also  men  and women are  collectors.   In some countries,  there are even lessons  on stamp

collecting in school. People are becoming more and  more interested  in stamps.  Every picture on a stamp

has its meaning in it.  It may be the head of a famous person,  an important place or special moment.  Each stamp tells us a story.   We can learn  a  lot  from stamps.   Now  stamp-collecting is my favourite hobby.  

Why not join us?          

1. Stamp-collecting started___________.

A.  earlier than 1845                

B.  later than 1921

C.  in 1854                        

D.  hundreds of years ago

2. Stamp-collectors are___________.

A. men and women                

B.  boys and girls

C.  neither young nor old          

D.  both A and B

3.  Lessons on stamp-collecting are given in___________.

A. a few countries  

B.  few countries  

C.  our country  

D.  America only

4. There are more and more stamp-collectors. This sentence means           

A. people are collecting different kinds of stamps

B. the number of stamp-collectors is growing

C. a group of people are collecting stamps

D. more and more stamps are being printed

5. Every picture on a stamp __________.

A. is the head of a stamp-collector

B. tells us something interesting

C. has nothing to do with America

D. tells us a story about some schools

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