经济林木

探讨经济林木在我国北方城市环境绿化中的应用前景

The Model and Problems of Applying Economic Forest into Urban Greening

根据义乌市林业土壤资源调查及利用现状，提出保土、增加森林植被、适当发展经济林木等5点意见。

According to investigations and current utilization situation of forestry resources in Yiwu , soil conservation 、 increase of forest vegetation 、 devolopping economic forest 、 etc. were proposed .

经济林木有漆树、桦树、椴树、桦柏等。

Sumac trees have economic , birch , linden trees , such as EVA parker .

PGPR接种剂和腐殖酸型肥料对于黄土高原的造林成活率和经济林木的产量都有一定的提高作用。

PGPR inoculum and humic acid-contained fertilizer can increase the survival rate of afforestations on loess plateau as well as the output of economic trees .

经济林木试管茎尖嫁接的研究现状及展望

Present Research Situation and Prospects of Shoot Apex Grafting in Economic Trees

可用作园林绿化的北方主要经济林木

The main species of northern economic forestry trees which are used for garden greening

韶兴市园林及经济林木的介壳虫名录初报生鸡肉中单核细胞增生李斯特菌的污染监测

Scale list of urban landscape and cash forest in Shaoxing City Contamination of fresh chicken by Listeria monocytogenes in Shaoxing City

结果表明：（1）限制粮食作物和经济林木种植的主要气候生态因子是热量。

The main results obtained are . 1 . Heat condition is the key climatic ecological factor restricting to grow grain and economic crops .

根据经济林木试管茎尖嫁接近20年来的研究成果，提出了今后的重点研究领域。

Based on the experiment achievement of shoot apex grafting in economic trees in the last 20 years , the key field for the future research has been pointed out .

结果表明，应用该系统，可使本区旱坡地枣、杏等经济林木的成活率分别提高52.3%和2.2%；

The result showed that the system can increase the survival rate of the economical forests such as Chinese jujube , apricot and increase by 52.3 % and 2.2 % respectively ;

该区域应当以生态林为主，不宜经营用材林及其它经济林木，但在土层深的山脚，可适当经营水果等经济林。

Ecological forests are growing . Timber forests and other trees of economic value are not managed . But in the foot of Moutain , some fruit trees are suitable to manage .

目前已建立了有效的植物基因转化技术体系，并在10多种经济林木上获得了外源转基因植株，一些重要的经济林木主要农艺性状的控制性基因图谱已经或正在开始建立。

The useful gene transformation systems have been established , more than 10 of the economic trees species have got transgenic plants , Gene mapping of the major horticultural characteristics of some important economic trees have been established .

该县山区气候资源丰富，气候类型多样，可划分为农作层、经济林木层、主要林业层和保护性开发层4个气候资源层。

The climatic resources in the mountainous areas in the county are abundant , the types vary , so it can be divided into four climatic resource strata . They are the crop stratum , the cash forest stratum , the main forest stratum and the planned-exploitation stratum .

同时，为通化市其他尚处于零散、规模不经济的林木小企业未来的发展提供了借鉴意义。

Meanwhile , our study provides a reference for the future development of the rest Still fragmented , diseconomies of scale small enterprises .

封山育林的生态经济作用试论林木资产的计价

Ecological and Economic Significances of Closed Forest On Value Accounting of Forest Trees Assets

市场经济条件下林木最佳采伐年龄的数学模型

Research on the Mathematical Model of the Optimal Logging Age of Timber under the Circumstance of Market Economy

农村集体经济组织采伐林木，由县级林业主管部门依照有关规定审核发放采伐许可证。

For the rural collective economic organizations to cut trees , the competent forestry authorities at the county level shall examine the application and issue the cutting license in conformity with relevant stipulations .

本文详述了云阳县经济林资源的现状、生产中存在的问题，根据云阳县不同的地形环境条件和适应商品经济的发展，提出了持续发展经济林木的策略。

This paper details the current status of the economic forest resources in Yunyang county of Sichuan province , and put forward some suggestions for developing economic forest resources according to local conditions .