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《园艺植物生产技术》模块一练习二
一、选择题(每题2分，计50分)
1.重短截是剪去枝条的···················································································()
A.1/5－1/3B.1/3－1/2C.2/3－3/4
2.桃树()果枝是多数品种的主要结果枝·························································()
A.徒长性B.长C.中D.短
3.苹果枝组基部直径为1.5cm的枝应留()个花序·············································()
A.5－6B.10－12C.20－24
4.未经过受精而形成果实的现象在果树上称作·····················································()
A.雌雄异数B.自花结实C.单性结实
5.枣果着生在______。···················································································()
A.一次枝上B.二次枝上C.枣吊
6.下面关于苹果开花坐果的描述，不正确的是·····················································()
A.花芽为混合花芽B.苹果是异花授粉的果树
C.以腋花芽结果为主D.一朵花序中，中间花先开
7.桃的北方品种群·························································································()
A.适于高温多湿的气候B.耐寒、耐旱
C.长果枝结果为主D.果形较小，核大肉小
8.中心干又称·······························································································()
A.中央领导干B.主干C.主枝D.骨干枝
9.一般核桃雌花开放后______d内羽状柱头分泌黏液多，柱头接受花粉能力最强。·····()
A.3B.5C.10D.20
10.葡萄为______。·······················································································()
A.落叶果树B.常绿果树C.半常绿果树D.草本果树
11.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
12.下列树枝干性较强的是··············································································()
A.桃
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