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
2023-07-18
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] 【S5】
选项
答案
M
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2847434.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
Gotmilk?Beveryafraid.Or,preferably,abitskeptical.Somefolksareab
[originaltext]W:Whatareyoudoing?M:I’morderingsomefilingcabinetsoutof
()新闻敏感主要表现为。A.及时发现新闻线索 B.准确判断新闻价值 C.预
蛋白质互补作用应遵循的原则包括( )。A.食物的生物学种属愈远愈好 B.食物
同一控制下的企业控股合并,合并日通过多次交换交易,分步取得被合并方股权并形成控制
血气PaCO升高的主要机制是A.弥散功能障碍 B.肺泡通气/血流比例失衡 C
初产妇,36岁,孕足月,诊断为混合性臀先露。骨盆外测量:髂棘间径26cm,髂嵴间
根据《中华人民共和国公司法》,上市公司是指其股票在证券交易所上市交易的( )。
下列有关书法艺术的表述,正确的是()。 A.宋代书法家张旭被称为“草圣”
最新回复
(
0
)