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【简答题】

板栗只开花不结果是什么原因引起的?

板栗种植有好几年了,只开花却很少结果,是什么原因?

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题目标签:开花板栗
参考答案:
参考解析:
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刷刷题刷刷变学霸
举一反三

【单选题】FruitImagine a world without fruit. We wouldn’t be very healthy. We get a lot of important vitamins from eating fruit.We think of fruit primarily as something to eat._____(26)Fruit is part of a flower...

A.
Dry fruits are thin and hard.
B.
We even make alcohol from fruit.
C.
But fruit has a purpose quite apart from our needs.
D.
So these plants produce fleshy fruits.
E.
Then the seeds grow into new plants.
F.
But the plants grown from these seeds are seedless.

【单选题】梨为伞房花序,开花时()

A.
花序外围的花先开
B.
花序中心的花先开
C.
整个花序基本同时开放
D.
大的花蕾先开

【单选题】()促进唐菖薄提早开花。

A.
. 多施肥
B.
. 短日照处理
C.
. 短夜处理
D.
. 高温处理

【单选题】我国著名的京东板栗产于(),可食也可制馅。

A.
山东省泰安
B.
辽宁省丹东
C.
河南省确山县
D.
北京西部燕山山区

【单选题】板栗的果实生于壳斗内,其壳斗的特点是()

A.
小苞片呈分枝刺
B.
苞片鳞形
C.
苞片线形
D.
苞片钻形