树木栽植及其功用

指出了林木对于生态环境和人类的重要作用,从遮蔽栽植、装饰栽植、遮荫栽植、防音栽植、防霉栽植等方面详细地探讨了树木栽植及其功能应用。     

树木栽植及其功用

指出了林木对于生态环境和人类的重要作用,从遮蔽栽植、装饰栽植、遮荫栽植、防音栽植、防霉栽植等方面详细地探讨了树木栽植及其功能应用。     

浅谈乌兰察布地区通道绿化栽植技术

文章主要论述了乌兰察布地区通道绿化栽植技术。结合该地区的气候、土壤等环境条件,阐述了苗木的选择、栽植前的保护和处理措施、苗木的栽植方法与抚育管护等栽植技术要点。     

提高冀北地区香花槐成活率关键技术措施

该文来自于6a来的香花槐栽培观察,通过选择适宜栽植时期、栽植前的准备充分、精细栽植和栽后管理等关键技术措施来提高冀北地区栽植香花槐的成活率。     

移植香樟如何成功度边危险期

探讨了圃地选择、栽植前、栽植时、栽植后等有利于移植香樟成功度过危险期应注意和采取的措施。     

辽西地区杨树适宜品种与创新栽植技术探析

长期以来,辽西地区杨树常规栽植技术,不能真正做到提高林分单产和质量,如何从粗放生产经营为集约化经营,切切实实来提高栽植杨树的单位面积经济效益,如何选择杨树品种和做到杨树创新栽植等技术尤为重要。本文从杨树适宜品种选择、适度聚集式栽植、营造混交林等探析了杨树栽植技术。     

太原西山地区雪松大树移植技术

雪松属于观赏树种，树体高大，树形优美，近年来已经引进北方地区栽植。从移植树木选择、挖掘、包装和运输、栽植、栽植后的养护管理以及病虫害防治等方面介绍了雪松在太原地区的栽植技术。     

太原市城区树木移栽技术

树木移栽科技含量高,每个环节都必须严格把关。从栽植时期选择、树种及苗木选择、树木栽植、栽后管护等方面介绍了太原市树木栽植技术,以期为成功栽植树木提供技术参考。     

移植香樟如何成功度过危险期

探讨了圃地选择、栽植前、栽植时、栽植后等有利于移植香樟成功度过危险期应注意和采取的措施。     

意大利杨的栽植与管理浅见

从栽植时间、苗木选取、树塘开挖、栽植方法、防止失水、栽后管理和病虫害防治等方面,对我国北方平原地区主要的速生用材造林树种之一意杨的栽植与管理技术进行探讨,以期为意杨栽植提供技术参考。     

春季园林新植树木养护技术研究

俗话说“三分种,七分管”,树木栽植后必须进行科学、及时、细致的养护,才有利于树木成活。从多个方面阐述新栽树木在成活期的养护管理,以期对春季园林管理。     

Growth responses to planting density and management intensity in loblolly pine plantations in the southeastern USA Lower Coastal Plain

? Background

A culture/density study was established in 1995 in the Lower Coastal Plain of the southeastern USA to evaluate the effects of intensive silviculture and current operational practices on the growth and yield of loblolly pine plantations across a wide range of planting densities (741–4,448 trees/ha). The operational regime consisted of bedding and herbicide application in site preparation and fertilizer applications at planting and in the eighth and 12th growing seasons. The intensive management regime had additional complete competition control, tip moths control, and more repeated fertilization treatments.

? Methods

The data from 14 locations from this split-plot experiment design with repeated measurements were analyzed with a mixed-effects model approach in terms of average DBH, average height, average dominant height, survival, stand basal area, and stand volume.

? Results

In the first few years after planting, there were no significant effects of management intensity and planting density. In later years, both management intensity and planting density significantly impacted response variables, and their interaction was only significant for average diameter at breast height (DBH). Responses to intensive management in DBH were greatest at the lowest planting densities. Intensive management resulted in larger average DBH, average height, dominant height, stand basal area, and volume. Intensively managed plots had more mortality at age 12. There were negative average DBH, average height, dominant height, and survival responses but positive stand basal area and volume responses to increasing planting density. However, there were no significant differences for planting densities above 2,224 trees/ha.

? Conclusions

The results demonstrate that both management intensity and planting density significantly affect loblolly pine productivity in the Lower Coastal Plain, and their effects are additive in nature due to the general lack of interactions.     

浙江遂昌油茶良种栽培存在问题及对策

通过对遂昌县种植面积2 hm^2以上油茶良种基地的林分生长状况、经营管理情况进行调查,指出油茶良种栽培中存在的主要问题,提出其丰产栽培模式和技术。调查发现,现有油茶林种植密度偏大、良种配置不合理、经营管理粗放、技术推广体系不完善等造成良种不能丰产稳产。针对存在的问题,提出实现油茶良种高产稳产,除了选择适宜的造林地和油茶良种以外,优化种植模式、合理修剪、疏伐、间作套种等栽培管理技术也是关键。     

海南桉树现状与发展趋势

桉树是我国南方栽培的优良树种之一，是海南改造生态环境、造林绿化的先锋树种，是海南出口创汇的重要产业。海南引种栽培桉树大约经历四个阶段，即小面积试种阶段；粗放经营阶段；集约经营阶段和优树无性系造林阶段。海南种植桉树将呈现四大发展趋势，即发展桉树纸浆纤维材；发展家具、人造板、建材等用材；发展桉叶精炼油等化学产品；发展桉树混交林和防护林。为促进海南生态平衡状产生良好作用．     

Socio-economic factors affecting smallholder tree planting and management intentions in Leyte Province,Philippines

Survey data have been collected from four rural communities in Leyte Province, the Philippines, on household tree planting and management intentions, as well as the socio-economic characteristics, attitudes to tree planting and management, farming practices and the number of trees planted. In relation to intended tree planting and management activities, respondents were asked a series of structured questions as to what tree species they intend to plant, how many individual trees of each of those species they plan to plant, and for what purpose they propose to plant each of the tree species. This paper reports the results of analyses of the stated tree management intentions of households in the four communities and identifies the socioeconomic factors that influence householders’ tree management intentions. Respondents were generally enthusiastic about the possibility for further tree planting on their land, 75% indicating they would undertake planting. About 60% indicated an interest in commercial tree farming, with no significant differences in this level of interest between communities. It was found that a number of socio-economic variables indicating higher levels of land ownership and previous experience in the forestry industry are related to the intention to plant trees to produce timber for sale. These include the use of materials from public lands, participation in community organisations and community forestry programs, and the present management of trees to produce timber for sale.     

生态风景林研究进展

生态风景林是我国城市森林发展过程中形成的一个新林种.该文在对生态风景林营建技术及其效益评价相关研究成果进行概括的基础上,对当前重点研究方向进行了展望.     

土质瘠薄河滩地杨树速生丰产技术研究

通过在土质瘠薄河滩地设置3处杨树造林试验地,分别采取不同造林方法、不同造林树种、不同经营管理措施等对比试验,结果表明:在土质瘠薄的河滩地营造杨树,必须采取非常规造林技术、适地适树选择抗旱树种和实施精心经营管理措施,才能实现速生丰产。     

科尔沁沙地农田防护林营造技术浅析

文章主要从农田防护林带的结构设计选择,林带走向、间距,防护林树种选择、整地、造林方法及农田防护林的经营管理等方面阐述了科尔沁沙地这一地区农田防护林营造技术。     

彰武北部沙地樟子松人工林水分动态的研究

综合分析了彰武北部地区近50年生樟子松人工林在不同立地类型、不同土壤深度以及人工林不同经营阶段、不同初植密度的土壤含水率及地下水位的变化情况,并提出了合理的初植及经营密度。     

浅说果园经营特点

为了促进新兴果农转变观念,提高果农的认识,在与零星果树种植和传统农田经营比较的基础上,分析总结了果园经营的基本特点,提出了要充分发挥果农协会的作用,引导促进果园经营的专业化合作生产,果树种植新兴地区应组织邀请务果能手传授经验,鼓励面向果农的论文写作,重视闲弃果园的管理等建议.