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【判断题】

( )嫁接能够很好地防止西瓜枯萎病的发生。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【多选题】嫁接的目的是()

A.
防止土传病害,克服连作障碍
B.
增强植株的抗逆性
C.
提高产量
D.
使产品品质受到砧木的影响
E.
提高植株肥水利用率

【多选题】胡椒枯萎病在的传播途是( )

A.
带病种苗调运进行远距离传播。
B.
种子带毒传播。
C.
土壤传播
D.
地面流水传播
E.
农具传播
F.
割蔓传播

【多选题】嫁接的目的是

A.
防止土传病害,克服连作障碍
B.
增强植株的抗逆性
C.
提高产量
D.
使产品品质受到砧木的影响

【单选题】植物的嫁接最容易。

A.
木本
B.
草本
C.
木质藤本
D.
草质藤本

【单选题】An elm in our backyard(7)the blight (枯萎病) this summer and dropped stone dead, leafless, almost overnight. One weekend(8)was a normal-looking elm, maybe a little bare in spots but(9)alarming, and the n...

A.
There are so many new books about dying that there are now special shelves set aside for them in bookshops, along with the health-diet and home-repair paperbacks. Some of them are so(1) with detailed information and step-by-step instructions for performing the function, that you’d think this was a new sort of(2)which all of us are now required to learn. The strongest impression the casual reader gets is that proper dying has become an extraordinary,(3)an exotic experience, something only the specially trained can do.
B.
(4), you could be led to believe that we are the only(5)capable of being aware of death, and that when the rest of nature is experiencing the life cycle and dying, one generation after(6), it is a different kind of process, done automatically and trivially, or more "natural", as we say.

【单选题】葡萄嫁接常用()

A.
芽接法
B.
舌接法
C.
割接法
D.
根接法