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【单选题】

板栗、核桃雄花较多,一般疏去90%也能保证正常的授粉要求,被称为()。

A.
平衡施肥
B.
诊断施肥
C.
逆向施肥
D.
根外追肥
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题目标签:核桃授粉板栗
参考答案:
参考解析:
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【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】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