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草履蚧是核桃树的主要害虫之一,在陕西商州区调查,有虫株率高达50%以上,危害轻者,树势衰弱,危害重者,造成早期落叶、落果,甚至整株死亡.采用营林措施、生物防治、药剂防治等综合措施,防治效果明显. 相似文献
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该文阐述了"花宝"与敌杀死药剂复合防治草履蚧、粉虱的方法和效果,结果表明:应用50倍"花宝"稀释液与5 000倍敌杀死稀释液混合防治草履蚧、粉虱,效果显著。草履蚧经过4次施药,80%左右的树木已不见草履蚧,20%树木只见零星雌虫。粉虱着药后3 d内陆续死亡,受粉虱危害轻度发生煤污病的叶片,在施药后逐渐转绿,重度发生煤污病的树木也抽出新枝。 相似文献
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《北京园林》2017,(1)
草履蚧在我国分布广泛,是重要的林业有害生物,在颐和园内危害柳树、杨树、榆树、槲树、紫薇等园林植物,因园内柳树基数大,造成草履蚧对柳树的危害尤为突出。草履蚧常群集危害,若虫和雌成虫吸食树汁,树木受害后不能正常萌芽或萌芽后失水萎蔫,影响园林景观。为了保护皇家园林植物资源、提高颐和园植物景观与游览舒适度,草履蚧的防治工作迫在眉睫。经过多年观察草履蚧的生物学特性和在颐和园的危害规律,实践包括物理防治、化学防治和释放天敌昆虫等不同防控手段,总结出一套具有颐和园特色的草履蚧综合防治措施。在核心游览区、新东堤及六桥区域、团城湖水源保护地周边使用泥环法,既能有效阻隔害虫上树,又能保证外观统一整洁、副作用小。万寿山区域采用粘虫胶,达到防治效果的同时节省人力物力资源。当出现个别地点害虫爆发严重影响园林景观,采用化学药剂进行紧急救治。坚持在团城湖周围释放小蜂、瓢虫等天敌昆虫,并种植蜜源植物,促进群落稳定生存并发展,将草履蚧数量控制在可接受范围内。 相似文献
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草履蚧虫的危害及防治赵庚钧草履蚧虫是介壳虫类中的一种,分布于我国大部分地区,危害珊瑚树、杨树、悬铃木等树木,严重时可造成树木生长不良,早期落叶,甚至死亡。对草履蚧虫的防治不可忽视。一、草履蚧虫的形态识别草履蚧虫成虫有雌雄之分,雌虫无翅,扁平,椭圆形,... 相似文献
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秦岭北麓地区草履蚧生活习性及防治试验 总被引:1,自引:0,他引:1
草履蚧在秦岭北麓地区1年发生1代,用2.5%功夫、10%杀灭菊脂和蚧壳杀三种杀虫剂进行防治对比试验,蚧壳杀内吸性杀虫剂,防治效果均高于2.5%功夫和10%杀灭菊脂两种杀虫剂。 相似文献
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杨树草履蚧的综合防治技术 总被引:4,自引:0,他引:4
草履蚧Drosicha corpulenta(kuwana)是危害杨树的重要吸汁害虫,该虫以若虫和成虫在杨树等树木的嫩枝嫩梢处刺吸危害.草履蚧个体小,生活隐蔽,其初期危害症状不明显,常被人们所忽视.等到暴发成灾时,防治成本增大,且无良好的防治效果.因此,防治草履蚧必须识其形,知其性,抓住关键时期,采取有效防治措施才能取得满意的效果. 相似文献
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利用杨树人工林剩余物生产刨花板可行性研究 总被引:1,自引:0,他引:1
The composite board industry in Iran is obliged to use residues from forest operation as well as wood industry for competing
with paper industry because of shortage of wood. In the present study we investigated the residues from poplar plantation
used for particleboard production. Three kinds of wood materials, poplar branches, small diameter poplar wood (3–8 cm) and
beech wood, were used in the experiment of particleboard production. The results demonstrated that the characteristic of particleboard
made from poplar branches and small diameter wood is comparable to that made from mature beech wood. To avoid too much residual
acid in the final board, the properties of boards produced with 1.5% hardener at 175°C press temperature are acceptable, although
the properties of particleboard produced with 2% hardener were higher than were higher than that of the board produced with
lower hardener (1% or 1.5%).. The MOR, MOE and IB of particleboard made from branches were measured as 14.57, 2015, and 1.32
MPa, respectively, while The MOR, MOE and IB of particleboard produced from small diameter poplar wood were 19.90, 2199, and
1.86 MPa, respectively. The thickness swelling of boards made from branches after 2 and 24 h immersion in water was 20.14%
and 31.26%. The utilization of branches and very small diameter wood of poplar is recommended for the survival and developments
of particleboard industry in Iran. 相似文献
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本文利用在安徽省安庆市大观区海口镇南埂长江滩地不同时期所做的杨树解析木资料,较为系统地研究了滩地杨树人工林的生物量及生长量,并建立了其材积生长方程和生物量方程。结果表明:长江滩地杨树林分具有较高的生长量和森林生产力,并且能够维持较长时间的快生长,这有利于长期维持滩地森林生态系统的稳定性,持续有效地发挥“抑螺防病林”的功能,同时也具有较高的经济效益;长江滩地杨树的数量成熟迟于一般杨树林分,约在22年左右;长江滩地杨树树干生物量的分配比例在60%以上,树枝17%左右,树叶3%左右,树根大致在13%-19%之间,树干生物量分配比例随年龄增加而增加,枝叶则略有下降,而树根下降较多。 相似文献
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杨树(Populusspp )经过多年人工选育栽培形成了大量的品系,同时杨树也是感染病虫害较多的一个树种之一,在速生丰产林的营造过程中如果不注意病虫害的防治,多年造林成果可能会毁于一旦。在杨树病虫害中,蛀干类害虫光肩星天牛(AnoplophoranobilisGanglbauer)、黄斑星天牛(AnoplophoraglabripennisMotsch )以危害主干,隐蔽性强,繁殖率高而成为杨树速生丰产林建设的主要防治对象[1~4]。1 试验地概况试验地位于宁夏中卫县赛金塘治沙林场,地处黄灌区与北部沙漠交界的地区,海拔1211 4~1221 6m,积温较高,日照充足,光能丰富,干旱少雨,蒸腾强烈,… 相似文献
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Gao Chang-qi Sun Shou-hui Ren Xiao-guang Song Li-wen Zhang Xiao-jun Dai Wan-zhuo Xiao Hui Zhuang Cui-yun Yi De-guo Zhu Zhen-yu Ren Hai-bo 《林业研究》2001,12(4):263-265
An experimental area of poplar was established in Songyuan of Jilin Province in 1999 for testing the resistance of different
poplar stains toSaperda poplnea. Incidence ofS. poplnea on ten poplar strains were investigated, and the main trophic component of branches of these poplar trees were measured and
analyzed in April 2001. The results showed that there existed significant difference in population size ofS. poplnea on different poplar strains, and the branches of these poplar strains have significant difference in nutrient component and
content of amino acids. The population size of this pest had a significantly positive correlation with dissolvable total sugar
and water content but had no significant correlation with content of total nitrogen and protein nitrogen.
Foundation Item: This paper is part of the subject of integrated control of longicorn of poplar for mainly focusing on pest resistance, which
was supported by Jilin Provincial Forestry Department (96-010).
Biography: Gao Chang-qi (1949-), Research Fellow, Doctorate Tutor, Jilin Provincial Academy of Forestry Science, Changehun 139931,
P. R. China.
Responsible editor: Chai Ruihai 相似文献
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以宁夏仁存渡护岸林场引进的截叶毛白杨、毛新×毛白73两个无性系的1年生硬枝为材料,以新疆杨为对照进行硬枝扦插试验,采用ABT-1号生根粉对插穗进行处理,比较其扦插生根情况。结果表明:2个无性系的杨树及新疆杨采用不同处理时,插穗生根情况不同;ABT-1生根粉处理的截叶毛白杨插穗在500 mg·L-1浓度时愈伤组织形成率最大,达58.33%;毛新×毛白73枝条在600 mg·L-1浓度时愈伤组织形成率最大,为41.67%。未用ABT-1生根粉处理的截叶毛白杨、毛新×毛白73和新疆杨的生根率高于处理过的。不同品种的杨树扦插生根率存在极显著差异,新疆杨生根率高达82.14%,高于截叶毛白杨与毛新×毛白73的,更适合进行扦插扩繁。 相似文献
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为评价3个杨树新品种鲁林1号、2号和3号制作胶合板的适宜性,选取生产中正应用的I-107、L35和中菏1号为对照,通过大田形质指标调查、鲜单板旋切性能评价、干单板质量评价和胶合板质量检验等方法,评价了其单板制作胶合板的适宜性及胶合板质量。试验结果表明,鲁林1、2、3号杨与3个对照相比具有较高的圆满度;鲁林1号分枝较细、分枝多且均匀,鲁林2号、3号分枝相对较少、较长、较粗;3个品种的鲜单板旋切性能均较好,干板质地良好,制作的胶合板成品符合国家标准,适宜做胶合板材。 相似文献