腾冲市回头山西南桦母树林选建技术与成效分析

通过介绍西南桦的分布、形态特征、生态学特性、物候特征及利用价值,从母树林林分选择、疏伐、日常管护、子代测定、区域性试验、生产性试验等方面总结了腾冲市回头山母树林选建的主要技术,简要分析了母树林建设成效,并明确了适宜种植范围,以期在腾冲市及周边地区推广使用良种良法,助力当地营林生产。

腾冲市苏江国有林场油麦吊云杉母树林选建技术

2002年,在腾冲市苏江国有林场,开展了油麦吊云杉母树林选建技术研究。从收集资料初选、踏查、候选林分调查等方面介绍了油麦吊云杉母树林的林分选择技术;从疏伐的意义、依据、原则、方法、对象、强度、间隔期、步骤等方面介绍了油麦吊云杉母树林的疏伐技术;从割灌除草、修枝、病虫害防治、保护、监测、档案管理等方面介绍了母树林的经营管理技术;从采种、种实调制、种子处理、播种、幼苗管理、容器苗管理、苗期管理等方面介绍了种苗繁殖技术;从造林地选择、林地清理、整地、定植、抚育等方面介绍了栽培技术。通过子代测定,结果显示:23年生子代测定林的树高、胸径和单株材积分别比对照提高20.9%、21.4%、69.4%。

The Technology Selection and Critical Successful Factors in the Information Technology （IT） Growth of Manufacturing Corporations in China

With the rapid development of the information technology （IT） and the more competitive environment of the corporations, IT is not only important for the enterprises tactically but also strategically, We extend the concept of the critical success factors （CSF） and Nolan＇s stages theory to identify the IT issues and measure their CSF of the manufacturers in China. We put forward the IT selection matrix based on Nolan＇s stages theory to analyze the IT application in manufacturers in Beijing based on our survey. We analyze the development of IT, IT selection strategy and the CSF influencing the IT growth of manufacturers in China.