问题 问答题 简答题

简述塑料大拥春黄瓜栽培要注意的环节。

答案

参考答案:

要管理好塑料大拥春黄瓜,需注意下面几个关键问题:

(1)选用适宜品种:应选用早熟性强、对温度适应性广、长势中等适于密植、抗病、高产优质的品种;(2)培育适聆壮苗:苗龄宜大些,应加强幼苗锻炼,提髙幼苗适应逆塊能力;

(3)合理密植:不同品种,密度应有所区别;

(4)根据保温条件灵活调整定植期:只要当10cm地温旗定通过10X3,气温达到15*0以上即可定植;

(5)加强管理,控制病害发生。

阅读理解

During the summer holidays there will be a revised schedule of services for the students. Changes for dining-room and library service hours and for bus schedules will be posted on the wall outside of the dining-hall. Weekly film and concert schedules, which are being arranged, will be posted each Wednesday outside of the student club.

In the summer holidays, buses going to the town center will leave the main hall every hour on the half hour during the day. The dining-room will serve three meals a day from 7:00 am to 7:00 pm during the week and two meals from noon to 7:00 pm on weekends. The library will continue its usual hours during the week, but have shorter hours on Saturdays and Sundays. The weekend hours are from noon to 5:00 pm.

All students who want to use the library borrowing services must have a new summer card. This announcement will also appear in the next week’s student newspaper.

小题1:The main purpose of this announcement is to ________.

A.tell students of important schedule changes

B.show the excellent services for students

C.tell students of new bus and library services

D.ask students to renew their library cards小题2:At which of the following times will the bus leave the main hall?

A.8:00, 9:00, 10:00, 11:00

B.8:30, 9:30, 10:30, 11:30

C.8:30, 9:00, 9:30, 10:00

D.8:00, 9:30, 11:00, 12:30小题3:Times for films and concerts are not listed in this announcement because ________.

A.they are not to be announced

B.the full list is not ready

C.they are hard to arrange

D.the full list is too long小题4: In the summer holidays, the library will have __________.

A.no special hours

B.special hours on weekdays

C.special hours on weekends

D.special hours both on weekdays and weekends小题5:We may infer that during the summer holidays ________.

A.The library will continue its usual hours on weekdays

B.students will stay in the university

C.there will be a concert or film once a week

D.no breakfast will be served on weekends

多项选择题