首页
登录
职称英语
We often think of agriculture as planting seeds and harvesting crops. But many c
We often think of agriculture as planting seeds and harvesting crops. But many c
游客
2024-02-19
55
管理
问题
We often think of agriculture as planting seeds and harvesting crops. But many crops do not come from seeds. Many kinds of trees and plants are grown from【S1】______cut from existing trees and plants. This is called grafting(嫁接) .
Farmers cut branches or young growths, called【S2】______, from one plant and place them on a related kind of plant. The branch or bud that is grafted is called a scion(接穗) . The plant that【S3】______the graft is called the root stock. Over time, the【S4】______from the two plants grow together, the grafted plant begins to【S5】______the leaves and fruit of the scion, not the root stock.
A graft can be cut in several ways. A cleft graft(割接,劈接) , for example, requires a scion with several buds on it. The bottom of the scion is cut in the【S6】______of the letter V. A place is cut in the root stock to accept the scion. The scion is then【S7】______placed into the cut on the root stock. Growth medium is put on the【S8】______to keep it wet and help the growth.
Grafting can join scions with【S9】______qualities to root stock that is strong and resists disease and insects. Some common fruit trees such as sweet cherries have to be grafted.
In an age of hightechnology agriculture, grafting is a lowtechnology method that remains【S10】______important.
A blossoms B pieces C composes D parts
E securely F extremely G buds H agreeable
I accepts J firmly K grow L desirable M produce N shape O join [br] 【S8】
选项
答案
O
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3463701.html
相关试题推荐
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butmanyc
随机试题
Whatdoesthemanmeanby"DIY"?[originaltext]F:Whatdoyouusuallydoinyour
[originaltext]Interviewer(W)Mr.Smith(M)Now,listentoPartOneoftheintervi
AmericansandTheirCarsA)Ithasbeenoneoftheworld’
TheEndofAIDS?A)OnJune5th1981America’sCentresfo
Thedifferencebetweenaliquidandagasisobvious(1)_____theconditions
水力警铃启动时,警铃声强度应不小于()Db。A.20 B.40 C.60
职工享受国家优惠政策购买的拥有部分产权的房地产( )。A.不得抵押 B.可以
A.飞沫传播 B.唾液传播 C.垂直传播 D.粪口途径传播 E.经注射、
当保险合同中记载的内容不一致时,下列说法正确的是:()A.投保单与保险单或
双代号网络计划中,工作H的持续时间是7天,最早完成时间是第13天,总时差是9天,
最新回复
(
0
)