实施龙顶名牌战略推进茶叶产业化进程

分析了开化龙顶茶叶生产的环境。土地资源和生产，销售现状以及存在的问题，提出了产业化发展战略和实施对策与措施。     

果蔬产后病害病原菌胞外酶的启动及其调控

病原菌胞外酶的启动和调控在果蔬产后病害病原菌致病过程中起着重要作用。本文针对寄主植物的生理变化对果蔬产后病害发生的影响,产后病害病原物细胞壁降解酶在致病过程中的作用,影响病原物细胞壁降解酶活性的因子(包括酚类物质、pH值、温度、湿度和金属离子等)及其调控作用等方面的研究进展做了较为全面的综述。     

STUDY ON CHEMICAL CONSTITUTION OF BENZENE AND ALCOHOL EXTRACTIVES OF TRACEUTRON SINENSE OLIVE

Thechemicalconstitutionsoftheextractivevaryquitindifferentfamily,genusandspecies.ThisVariancecanbeidentifvedmucheasierthanthevariancesofcollulose,semicolluloseand1ignin.Thusthestudyofchemicalconstitutionsofextractiveisanimportantbranchofphytochemistryandchemicalplanttaxonomy.TetracentronSinenseOliveisaspecialbroad-leavedspecies.Therearetracheidsbutnovessel.Bothcharactersofbroad-leavedandconiferspeciespresentinonespecies-Thusthestudyofchemicalconstitutionsoftheextractivefromthisspeciesisquite…     

Study on chemical constitution of benzene and alcohol extractives ofTraceutron Sinense Olive

The wood powder ofTetracentron Sinense Olive was extracted with the benzene and alcohol (2:1 v/v). Then, the extractive is analyzed in Gc and Gc-Ms. Twenty chemical constitutions of the extractive are separated and identified, which are as follows: calamenene; 2.6,10-trimethyldihexyl; 3-methoxybenzaldehyde; Methyl-4-methox-_ybenzoate; 4-methoxyphenylacetone; 3.4-dimethoxybenzaldehyde; 3.4-dimethoxyhypnone; methyl-3.4-dimethoxybenzoate; Methyl-4-methoxyphenylacrylate; 4,4′-dimethoxycabonyl-diphenylethane; Methyl-3, 4,5-erimethoxybenzoate; Methyl-3.4-dimethoxyphenylacrylate; Methyl-myristate; Methyl-palmate; Methyl-zoomarate; Methyl-stearate; Methyl-oleate; Methyl-arachidate; Methyl-behenate; Dimethylazelate.     

林业行政违规现象的探讨

调查了林业行政管理中存在利益驱动、以罚代批、一罚了之、以权谋私、毁林造林、收取贿赂等6种违规形式,林业行政违规是行政职能部门的权力异化导致的。对违规成因进行了理论分析,提出应加强内、外监管,建立权力监督制约机制,民间团体、检察机关介入监管林业行政违规的解决对策。     

Effects site conditions on industrial fiber plantations of Lar/x olgensis

Plot sampling was conducted in the second cultivation areas ofLarix olgensis in Heilongjiang Province, China. By analyzing plot investigation data, wood properties, and kraft pulps of 840 plots and 248 sample trees in industrial plantations of L. olgensis on different sites, we examined the growth process of L. olgensis industrial plantation with suitable structure, the wood fiber feature, chemical composition, physical performance and pulp characteristics. It is suggested that site conditions have major effects on plantation growth, fiber contains, fiber length, rate between fiber length and fiber width, pulping rate and pulp physics intensity. The best site for L. olgensis industrial plantation growth is site class Ⅰ and site class Ⅱ, which are on lower locations. Site condition has an obvious influence on the wood characteristics. Within the range of site conditions and stand densities studied, the worse the site condition, the less the fiber contains, the shorter the fiber length, and the more the 1% NaOH extraction. This kind of relationship becomes more obvious as stand age increases. However, the influence of site condition on pulping rate and pulp physics intensity is not obvious. The result provides theoretical base for cultivation of industrial fiber plantation of L. olgensis.     

茶梢蛾幼虫空间分布及其抽样技术

对茶梢蛾幼虫的空间分布型及抽样技术的研究结果表明,幼虫为普通聚集分布,其基本成分是面积为一株油茶大小的个体群,个体间相互吸引。调查时以棋盘式取样为佳。根据空间分布型分析,计算出序贯抽样模型为:最适理论抽样数模型为:     

不同提取方式下塔拉籽油提取率及其相关性质的研究

采用不同提取方式对塔拉籽油提取率、理化指标、脂肪酸构成进行测定的结果表明:在索氏、超声、超临界3种提取方式中,超临界在塔拉籽油的提取率和脱酸方面表现最好,相关理化指标的表现也较好;塔拉籽油脂含有棕榈酸、棕榈油酸、硬脂酸、油酸、亚油酸、花生酸、亚麻酸、二十二碳酸等8种脂肪酸,不同提取方式对脂肪酸构成及含量无明显影响,超临界为塔拉籽油最优提取方式。     

EFFECTIVENESS OF ACEPHATE IMPLANTS IN PROTECTING CONES FROM INSECT DAMAGE IN SOME CONIFERFORESTS OF NORTHEASTERN CHINA

lNTRoDUCTloNInChina,onlyafewexperimentshavebeenperfbrmedtotestinsecticidessusceptibletopreventconesandseedsfrominsectdamage(Anonymousl986,GaoBuquetal.l99l,YueShukuil992,LiuYikong1993).Moreover,thesetestsonlyconsistedofsprayingchemi-cals,thatmayinduceharInfulconsequencesuponenvironment.TheintensifiedeffoftofafforestationinNortleasternChinarecentlyrequiredtoestablishlnyenumbersofseedorchards,aswellasparent-trCestands,inordertoprovideforesterswithhigh-qualityseeds,especiallyinlarch.Thispr…     

Chemical changes in steam-pressed kenaf core binderless particleboard

The effects of chemical changes in kenaf core binderless particleboards on the bonding performance and thickness swelling of boards were investigated by chemical and spectroscopic analyses. Mild steam-injection treatments (0.6–1.0MPa) caused significant degradation of hemicelluloses, lignin, and cellulose. Conventional hot pressing caused a lower degree of degradation of the chemical components. The hot-pressed kenaf core board without any binders showed poor bonding performance. Thus, it was found that partial degradation of the three major chemical components of the kenaf core by mild steam-injection treatment increased the bonding performance and dimensional stability of the binderless boards, and gave better quality binderless boards than those made by hot-pressing treatments.Part of this report was presented at the 4th International Wood Science Symposium, Serpong, Indonesia, September 2002; and at the 53rd Annual Meeting of The Japan Wood Research Society, Fukuoka, March 2003