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
5
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] 【S1】
选项
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3463694.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
Ahostagesituationisfurtherworsenedbythefactthatbystanderscouldbehur
"Congratulations,Mr.Cooper,it’sagirl."Fatherhoodisgoingtohave
全面质量管理的基本观点中,为用户服务的观点,包括( )。A.使用工程的单位和个
"It'snouse,Mum,"saidJohnny."I'mj
瞳孔对光反射的中枢位于()A.延髓 B.中脑 C.纹状体 D.下丘脑
毛古斯舞是土家族的民间舞蹈。()
A.50% B.40% C.20% D.10%
诊断Ⅱ呼吸衰竭,下列哪项最有可靠的诊断依据:A.呼吸频率节律改变 B.甚至意识
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
下列关于我国土地资源的表述中,不正确的一项是( )。A.绝对数量大,人均占有少
最新回复
(
0
)