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【单选题】

板栗苗期管理中6月中旬至7月中下旬以( )肥为主

A.
B.
C.
D.
复合肥
题目标签:理中苗期板栗
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参考答案:
参考解析:
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【单选题】番茄育苗时,分苗期应在()。

A.
花芽分化前
B.
五片真叶时
C.
现薯时
D.
籽苗期

【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】播种苗幼苗期的生长特点是()。

A.
开始自行制造营养物质
B.
尚未长出侧根和真叶
C.
是苗木生长最快的时期
D.
营养物质转为贮藏状态

【多选题】苗期管理的主要措施有()。

A.
灌水和排水
B.
中耕除草
C.
密度控制
D.
灾害性因子防除
E.
苗木越冬保护

【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