您要查找的是不是：
- forest plantation of poplar 人工林杨木
- PRELIMINARY STUDY ON MULTIPLE EVALUATION FOR INTRODUCTION AND PLANTATION OF POPLAR CLONES IN KORQIN SANDY LANDS 杨树无性系在沙区引种造林综合评价的研究
- RESEARCH OF SANDY SOIL WATER-PHYSICAL PROPERTIES IN MIXED PLANTATION OF POPLAR AND BLACK LOCUST 杨树刺槐混交林沙地土壤的水分-物理性质
- Breeding of Poplar in Agricultural Division No. 兵团农七师胡杨壮苗的培育。
- Model simulation of isoprene emission flux in a tropical forest plantation of rubber trees 热带人工橡胶林异戊二烯排放通量的模式研究
- Furniture made of poplar is of good quality. 杨木的家具质量还是不错的。
- Analysis of Suitable Age of Seedling of Fast-growing and High-yielding Plantation of Poplar on Sand Land and Economic Benefit 沙地杨树速生丰产林适宜苗龄与经济效益分析
- SELF-THINNING MODEL IN PLANTATION OF PINUS MASSONIANA LAMB. 马尾松人工林种群自然稀疏模型的研究。
- At the back,a flower garden slopes down to a line of poplar trees. 在背面，有座花园成倾斜状，其斜坡一直延伸到一排白杨树。
- At the back, a flower garden slopes down to a line of poplar trees. 在背面，有座花园成倾斜状，其斜坡一直延伸到一排白杨树。
- On Infectious Degree of 25 Species of Poplar by Valsa sordida Nits. 25种杨树感发烂皮病程度的研究。
- Set up plan for plantation establishment, tending, and forest protection, caretaking forest plantation and forest area in appointed area. 制订造林、抚育、护林防火计划,管理好辖区内的林地、林木。
- Biomass and nutrient accumulation of poplar plantation on beach land in Yangtse River in Anhui province. 安徽长江滩地杨树人工林生物量和养分积累。
- The 40,000-ha fast-growing and high-yielding plantation of Guangxi's Gaofeng Forest Farm provides a view of rolling greenness. 广西高峰林场60万亩速生丰产林林场树木郁郁葱葱，连绵不断，好似绿色的海洋。
- The plantation of Munster had for the time but a limited success. 芝斯特的殖民事业，在当时仅取得极为有限的成就。
- Cryptorrhynchus lapathi is an important trunk borer of poplar and nationwide object of forest plants quarantine. 杨干象是杨树重要的蛀干害虫,为全国性森林植物检疫对象。
- Afforest Technology on Highyield Type Shelter Forest of Poplar Tree in Tongliao Area. 通辽地区丰产型杨树农田防护林营造技术。
- The main plant invaded forests are Carex korhinskyiand Carex duriuscula after relative stability of forest plantation community. 人工林群落相对稳定以后，林下自然侵入的植物主要为黄囊苔苹、寸草台草等。
- To explore the mechanism of the resistance of forest tree to insects and breeding new species with resistant is the foundation of Poplar Longhorn Beetle Integrative Management. 揭示林木抗虫机制，培育具有抗虫特性的新品种是杨树天牛综合管理体系的基础。
- In the 1960s, China began plantation of timber forests, construct of forest shelterbelt and construct nature reserve, and set up state forest farms. 从上个世纪六十年代开始营造用材林和防护林，建设自然保护区和国营林场；
