落叶松是我国北方主要造林树种之一。
The larch is one of major tree species for afforestation in north china.
栓皮栎是我国重要的造林树种，并且极具经济价值。
Quercus variabilis is an important tree species for afforestation, which have great economic value.
应用多目标模糊决策方法建立了太行山造林树种选择模型。
The species decision model for the forestation in Taihang Mountain Area has been established by using the multi-objective fuzzy decision method.
应用多目标模糊决策方法建立了太行山造林树种选择模型。
Two methods for text categorization fuzzy rule extraction are presented based on fuzzy decision tree.
从而为不同土壤条件下造林树种的优先选择提供了科学依据。
Therefore it provided the scientific basis for the optimum choice of the tree species in various soil in afforestation.
(K + w)值对选择造林树种和抚育间伐具有一定的指导意义。
K + W value is specified for selecting tree species in forestation and tending thinning.
采用土钻法和盆栽试验研究了渭北地区主要造林树种的垂直根系分布特征及其抗旱性。
Methods of soil auger and pot experiment were used to research vertical root distributions and drought resistance of main planting tree species in the Weibei loess plateau.
1993～1998年对元谋干热河谷区的9个造林树种的水分生理特性进行了观测。
The water physiological characteristics of 9 planting species in Yuanmou dry and hot valley areas were observed from 1993 to 1998.
采用盆栽试验的方法，研究了不同土壤干旱条件下渭北主要造林树种苗木根系活力的变化。
Under different conditions of soil moisture, seedling root vigor was studied for major tree species planted in the Weibei Loess Plateau by means of a pot experiment.
迭部林区现有优良森林经营树种10余种，辅助树种10 余种，珍稀造林树种5 种。
There are more than 10 excellent species for management, more than 10 accessory species and 5 precious planting species.
杨树是山东省主要造林树种之一，确定最佳采伐周期、造林密度、混交方式，是提高生物量的关键技术。
Poplar is one of the main afforestation tree species in Shandong Provicne. Defining the best cutting period, afforestation density and mixed mode is the key technologies to promote biomass.
为防止严重的土壤干层发生，选择生长较缓慢、消耗水分少的树种是必要的，并应减小造林树种植株密度。
In order to avoid the occurrence of dried soil layer, it is necessary to select the tree species with slow growth and low water consumption, and the afforesting density should be reduced.
滇南红厚壳是云南新发掘出来的一种优质造林树种，其树干通直圆满，材质优良，是制作刨切单板的优质材料。
Calophyllum polyanthum is a reforestation species of Yunnan province with the quality of straight stem and good wood quality.
在对江苏省全部海岸带林业多次实地考察的基础上，分析了影响海岸带造林树种分布和生长至关重要的立地因素。
In the years 1980-1985, on-the-spot investigations were carried out on afforestation in the whole seaboard area of Jiangsu province.
文章除论述元谋干热河谷区的自然条件、参试树种的高、径生长状况和分析结果外，还详细介绍了抗旱耐热造林树种的选择方法。
The analysis results of height and diameter growth of test species, the method to select drought resistant and heat resistant afforestation species were introduced in details in this paper.
金沙江干热河谷地区的主要造林树种中，以马占相思、山毛豆、真珠相思、大叶相思、台湾相思、绢毛相思、坡柳在旱季游离脯氨酸累积较多；
The accumulation of free proline in some major tree species growing in dry and hot river valley of Jinsha during both dry and rainy seasons has respectively been determined.
立地类型划分与抗逆树种选择是半干旱风沙区适地适树造林的技术关键。
The division of site type and selection of resistant species are key techniques to afforestation of matching trees with site conditions in semiarid sand area.
以山东省常见的主要造林绿化树种为研究对象，进行林木耗水性研究。
The main Sylvicultural tree species in Sandong were selected for the researches on water consumption.
本文主要从播区、树种、播期三个方面论述了陕西飞播造林的成就。
Deals with aerial sowing site, species and seeding time to approach the afforestation achievements in Shaanxi.
放线菌根瘤植物是自然界中一类重要的固氮资源，作为先锋树种和伴生树种在造林中有重要的应用价值。
Actinorhizal Plants are a kind of important natural nitrogen-fixing resources, and they have high value in reforestation as pioneer and accompanying species.
马褂木是我国南方优良的造林绿化树种，也是山地丘陵地区优先发展的纸浆纤维材和胶合板用材树种。
Liriodendron Chinese is a superior virescence forestation specie, also a paper pulp-making and veneer-making specie in south China.
就永康市农田林网现状、功能分析、造林地立地条件及适宜树种进行了分析探索。
The present situation of field forest network, analysis on its function, site condition for afforestation and the preferential tree species in Yongkang city were analysed and discussed.
蒙特·里杰克湾的地方树种，是一种高大的加州柏木；用于装饰、重新造林和建造防护林。
Tall California cypress endemic on monterey bay; widely used for ornament as well as reforestation and shelterbelt planting.
从1984年起，笔者对南酸枣进行了造林对比试验。通过试验对该树种的造林立地、造林时间、造林方法得出了结论。
The Comparing test on the afforestation of Choerospondias axillaris started in 1984 revealed the proper site, time and method for afforestation.
具有育苗及造林成活率高、速生、抗性强等特性，是优良的杨树工业用材树种，特别适宜培育胶合板材。
It is a quality variety with traits of high survival rate, fast growth rate and resistance to adversity conditions, and suitable for industrial purpose, especially for plywood.
云杉是青海省县主要的天然林资源，也是荒山造林和城镇绿化的优良树种。
Picea is not only major natural forest resources in Qinghai, but also fine tree species of afforestation and urban greening.
本树种是美国加利福尼亚 洲之乡土树种?在纽西兰、澳大利亚、南非、南美皆有造林木。
This species said to be a native of Monterey in California. Planted in New Zealand, Australia and South America.
随着阔叶树种造林比例的增加，阔叶树（蒙古栎）所占面积亦随之增加；
When broadleaved species were planted only, the area percent of coniferous species was lower than the control.
随着阔叶树种造林比例的增加，阔叶树（蒙古栎）所占面积亦随之增加；
When broadleaved species were planted only, the area percent of coniferous species was lower than the control.
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