药剂防治橡胶树外褐型死皮病试验     

宋泽兴  张长寿 《热带农业科技》2004,27(2):10-11,9

三种药物防治橡胶树割线外褐型死皮病3年的试验结果:B药物防效最好,防效为69.5%和70.4%,干胶净增产率5.2%;其次为“保-01”,防效为49.9%和43.8%,干胶净增产率9.1%;最差为A药物,防效为3.5%和26.8%,干胶净增产率0.1%,  相似文献   

山区杨树人工林树干病害综合防治的研究   总被引：1，自引：0，他引：1  

赵经周  张铁军 《林业科技》1992,17(1):20-23

杨树干部病害是杨树人工林的主要病害之一。侵染性病原有污黑腐皮壳菌(Valsa sordida)和小穴壳菌(Dothiorella g(?)egaria)。本文指出了7个诱病因子,提出化学药物和营林技术防治这种病害的具体措施。  相似文献   

百合真菌性病害化学防治方法的研究     

叶世森  林芳 《福建林业科技》2007,34(3):65-68

从百合种球消毒、圃地消毒、药剂防治方面开展百合真菌性病害化学防治试验。结果表明,联合运用圃地消毒和种球消毒,可以有效地预防百合真菌性病害初次侵染发生,采用25%的蓝点可湿性粉剂1 200倍液、1 500倍液,80%的云生可湿性粉剂600倍液,10%世高水分散粒剂1 000倍液防治百合真菌性病害能取得较好的防治效果。  相似文献   

石榴溃疡病害病原学研究   总被引：1，自引：0，他引：1  

刘会香  梁军  赵嘉平  王媛  吕全  张星耀 《林业科学》2007,43(4):54-58

对石榴溃疡病害3菌株所引起的病害症状、病原菌的形态学特征、培养学特性、生理学特性及分子遗传多样性等方面进行比较研究.结果表明:石榴疮痂病与石榴果实上增生型症状的病原菌具有更近的亲缘关系,应为同一病原菌引起,推测该病原菌首先侵染石榴侵染枝干,然后侵染石榴的花萼和果实;而石榴干腐病病原菌主要侵染枝干,是否侵染果实及引起症状特征需要继续进行研究和鉴定.  相似文献   

福建省速生丰产林病虫害发生现状及其治理策略     

蔡国贵 《福建林业科技》2005,32(2):111-115

概述了福建省速生丰产林主要病虫害发生种类、危害情况,分析了病虫害发生的严重形势及发生原因,据此提出了病虫害可持续治理策略,为速生丰产林发展提供依据。  相似文献   

吴起县沙棘主要病虫害及其防治方法     

闫占文 《陕西林业科技》2006,(4):27-29,34

本文介绍了吴起县沙棘的主要病虫害种类,并针对不同的病虫害种类提出了具体的防治措施,为吴起县沙棘林分的经营管理提供技术支撑。  相似文献   

Comparison of stand dynamics after dieback caused by pine wilt disease among pine forests with different management regimes in western Japan     

Keiji?SakamotoEmail author  Naoko?Miki  Taiyo?Tsuzuki  Takashi?Nishimoto  Ken?Yoshikawa 《Journal of Forest Research》2003,8(4):303-309

In pine forests damaged by pine wilt disease, in western Japan, the effect of protection regimes of pine trees on the stand dynamics were examined in the following four stands: (1) lightly damaged stand (age 30–40 years) with no procedure in operation for protecting pine trees; (2) severely damaged stand (age 30–40 years) with no procedure in place for protecting pine trees; (3) severely damaged stand (age 50 years) with a selective cutting of infected trees; (4) severely damaged stand (age 30–40 years) with a selective cutting of infected trees. All the stands had been abandoned before the pine wilt disease damage. The understory structure of the severely damaged stand with no protection procedure was similar to that of the lightly damaged stand. Frequent invasion by tree species and acceleration in the growth of understory trees occurred after the dieback in the selective cutting stand. These results suggest that a deficiency in the canopy layer caused by the dieback resulted in low disturbance intensity in the early stages after the dieback, but the selective cutting increased the intensity by the reduction in the understory as well as the canopy layer. The intensity of the disturbance in the selective cutting stands was larger in the younger stand because it had a higher density of selectively cut pine trees. The different stand structure of pine forests occurred after the dieback because the intensity of the disturbance varied as a result of the selective cutting operation and the stand age.  相似文献   

Large cardamom (Amomum subulatum Roxb.) plantation — An age old agroforestry system in Eastern Himalayas     

K. A. Singh  R. N. Rai  Patiram  D. T. Bhutia 《Agroforestry Systems》1989,9(3):241-257

Large cardamom (Amomum subulatum Roxb.) is a shade loving plant grown in the Indian hill states of Sikkim and Dargeeling district of West Bengal. About 30 important tree species are used to provide shade to the cardamom plants. Alnus nepalensis, a deciduous, nitrogen fixing and fast growing tree, is the species most commonly underplanted with cardamom. In addition to providing shade, it is also used for fuelwood. The old trees are cut and young plants coming up are allowed to grow in cyclic order. The quick decomposing leaf litter of A. nepalensis also fertilises the cardamom plants. The nitrogen added to the soil in this way has been found to be as high as 249 kg/ha. Large cardamom thrives well in a moist soil, which is maintained by water diverted from seasonal springs on the upper slopes. The system is well suited to conserving soil, water and tree cover of the characteristically steep slopes of the region. Moreover, the management inputs required for growing cardamom are low but the crop gives a higher financial return than rice or maize. The shade trees used in the system are also a major source of fuel, fodder and timber, especially as access to state owned forests is restricted by legislation. However, increasing incidence of viral chirkey and foorkey disease, panicle rot and capsule borer are reducing the cardamom productivity. It has been observed that integrating dairying and apiculture will further augment profitability from large cardamom agroforestry system.  相似文献   

鸡传染性法氏囊病病毒BC6/85株VP2基因的原核表达、纯化及鉴定     

刘丹 《中国兽药杂志》2015,49(5):17-21

为获得可用于鸡传染性法氏囊病病毒(IBDV)抗体检测的重组抗原VP2蛋白,根据GenBank中发表的IBDV VP2序列设计一对特异性引物,应用RT-PCR技术克隆IBDV经典标准攻毒株(BC6/85株)的VP2基因,插入质粒pET-32a中构建重组表达质粒pET-32a-VP2,经IPTG诱导后获得了以包涵体形式表达的重组蛋白。重组蛋白纯化后,Western-blot检测表明具有良好的反应原性。本研究为下步建立IBDV抗体的间接ELISA方法及新型疫苗的研制奠定了基础。  相似文献   

寄生虫半胱氨酸蛋白酶核酸疫苗的研究进展与应用前景   总被引：1，自引：1，他引：0  

王钊  周井祥 《中国兽药杂志》2015,49(1):60-64

就寄生虫半胱氨酸蛋白酶的一些生理生化与免疫学性质进行了概括,阐述了该酶与宿主免疫应答之间的作用关系,证明了该酶具有作为研制高效核酸疫苗的条件,同时综述了寄生虫半胱氨酸蛋白酶核酸疫苗的发展以及应用前景。  相似文献