长梗扁桃育苗

来源 :中国林业 | 被引量 : 0次 | 上传用户:lifazhan197809
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
长梗扁桃,俗名野樱桃,为蔷薇科李属桃亚属落叶灌木,是中国温带草原区的特有种,先后被国家和陕西省列入Ⅰ级稀有濒危植物和地方重点保护植物名录。一、现状形态特征:灌木高1~2.5米,树皮灰褐色至紫红色,具光泽,多分枝,小枝被柔毛或脱落。芽卵形,被柔毛。叶倒卵状椭圆形、披针形,长1.5~3厘米,先端急尖或圆钝,基部楔形,缺 Long stem Almond, commonly known as wild cherry, Rosaceae is a peach deciduous shrub, is a endemic species of temperate zone in China, has been included in the state and Shaanxi Province Ⅰ grade rare and endangered plants and local key protected plants directory. First, the status quo Morphological characteristics: 1 to 2.5 meters high shrubs, bark beige to purple, with luster, more branches, pubescent or off. Buds ovate, pilose. Leaves obovate-elliptic, lanceolate, 1.5-3 cm long, apex acute or obtuse, base cuneate, absent
其他文献
—Effective stress analysis is performed to evaluate the residual displacement of a caissonquaywall during 1994 Hokkaido-Toho-Oki Earthquake and 1993 Kushiro-Ok
学习任何一种语言的最终目的都是为了交际,英语也不例外。因此,英语课应该是技能课和实践课,应该把培养学生的交际意识放在首位。学生只有产生用英语进行传递信息和交流感情
在英语教学中对学生进行思维能力的培养是一个特别重要的问题,合理的教学对思维的发展有着重要的作用。 The cultivation of students’ thinking ability in English teach
滔河盆地位于豫—鄂两省毗邻地区。盆内沉积了一套1600 m 左右的粗碎屑岩系, 根据恐龙蛋、恐龙、轮藻化石和岩性特征, 划分为高沟组马家村组、寺沟组, 时代归属于晚白垩世。其时代的
Objective Increase therapeutic effective rat e of post-perineum malignant carcin oma and decrease side effects.Method Inject chemotherapy drugs such as 5-FU,DDP
期刊
结合当前大学公共英语教学的现状分析了大学公共英语存在的问题和解决对策。 Based on the current situation of college public English teaching, this paper analyzes t
学生学习语文时经常会到报纸、杂志或者网络上寻找喜爱的文章,抄在笔记本上,文体不限,可以是记叙文、议论文、说明文或诗歌,在摘记中通过感受语言美来提高欣赏能力和写作水平
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
Objective To study the effects of low-intensity millimeter wave(MMW)irradiation on the immune adhesion f unction of ery-throcytes and lymphocytes in tumor patie
近年来我国结肠癌发病率不断上升 ,结肠癌合并急性梗阻病例也随之增多。我院 1993 -2 0 0 0年共收治结肠癌合并急性梗阻 2 6例 ,均行 期切除吻合手术治疗。现就治疗体会报告