【摘 要】
：
檵木,金缕梅科,多年生常绿灌木,原产于我国长江中下游及长江以南山地、丘陵地区,原生多为黄檵木,而用于城市园林种植的檵木,则是经过驯化、改良的红檵木。红檵木以它独特的
论文部分内容阅读
檵木,金缕梅科,多年生常绿灌木,原产于我国长江中下游及长江以南山地、丘陵地区,原生多为黄檵木,而用于城市园林种植的檵木,则是经过驯化、改良的红檵木。红檵木以它独特的花、叶效果,在城市园林建设中,用于绿化隔离带、花坛点缀、观赏盆景等,越来越受到人们的青睐。多年来,檵木的繁殖以播种为主,但是在城市条件下,往往结实率、发芽率不高。因此为提高繁殖系数,缩短成苗时间,我们从1993年开始,进行了三年的扦插试验,取得了较好的效果,扦插成活率达85%以上。现将檵木扦插试验结果介绍如下:一、插材的选用与扦插方法
Alder, Hamamelis, perennial evergreen shrubs, native to China’s Yangtze River and the Yangtze River south of mountainous and hilly areas, the native mostly yellow alder, and for urban garden planted alder, it is after domestication, improvement Red alder wood. Red alder wood with its unique flower, leaf effect, in the urban landscape construction, for the green belt, flower bed embellishment, ornamental bonsai, more and more people of all ages. Over the years, the breeding of Alnus septa mainly to seeding, but in urban conditions, often the rate of solid, germination rate is not high. Therefore, in order to increase the breeding coefficient and shorten the seedling time, we started the cutting experiment in 1993 for three years and achieved good results. The survival rate of cutting reached 85%. Alder now cuttings test results are as follows: First, the selection and cutting methods
其他文献
为观察空中紧张作业对工人身体健康的影响,我们对258名桥式起重机(天车)驾驶员作健康体检。现将结果报告如下。对象和方法 1 对象:观察组为258名(男126、女132)桥式起重机驾
This work aims to implement expert and collaborative group recommendation services through an analysis of expertise and network relations NTIS.First of all,
妙笔生辉可酬勤,山青水秀四季青。总因毫端情无限,幅幅悦目又赏心。这是全国人大常务委员会委员、原国家教委副主任柳斌观看了孙希岳的山水画后有感而作的一首诗。记者最近在
A simplified approach is presented for nonlinear analysis of vertically loaded pile raft.The raft as well as the subsoil under the raft is divided into a nu
2001年,嘉峪关市农村信用联社,在学习、总结各地支农先进经验的基础上,积极在我市开展农户小额信贷推广和信用村镇创建活动,较好地缓解了农民贷款难问题。截至2002年底,全市
Bridge scour is the biggest cause of bridge failures.Erosion of soil around the bridge foundation could lead to problems from instability of substructure to
一年之内，易宪容从学界走向了公众，成为了对房地产市场发言的红人儿。一个并非专业从事房地产研究的学者，怎么就成了这个行业的理论明星呢？ 主持人：您搞经济研究工作有几十年了，但是成名好像就是最近一年的事。 易宪容：其实不是这样。我成名是在上个世纪90年代末的时候，跟我们老师张五常教授做一些演讲。只不过大众了解我，可能在近几年。 主持人：从一个小众知名到大众知名，这是您原来想到的吗？是您的目标
茶梅(Camellia sasanqua),为山茶科常绿小灌木,花红色,喜通风透光,环境湿润的生长条件。笔者利用油茶芽苗作砧嫁接茶梅试验,相当成功。现将试验情况总结如下:一、试验地概况
This paper presents an algorithm for blind recognition of punctured convo-lutional codes which is an important problem in adaptive modulation and coding. For a
目的探讨乳腺癌手术后皮下积液与皮瓣坏死的原因及防治措施。方法手术治疗乳腺癌患者86例,对皮下积液与皮瓣坏死的产生原因进行回顾性分析,提出预防和处理措施。结果 86例中