Abstract:This study was conducted by composting and applying nitrogen to utiliize bag-asse as a substrate which would be equal to peat medium for factory-cultivatedvegetable seedlings. The results showed that:(1) with basal fertilizer(1.0g of NH4NO3,2.0g of KH2PO4, 0.2g of K2SO4 and 0.6mg of micronutrients per liter) and additi-onal application of N by2,1.5,1.0 times respectively, bagasse composted for 3,6,and 9 months was equal to peat medium; (2) only basal fertilizer was needed forthe bagasse when composted for 12 months;(3) increasing the composting volumemade bagasse more effective as a growth substrate;(4) after being dressed with two-fold nitrogen,and with O.5kg of urea per 100kg added the bagasse composted for2 months was equal to peat medium;(5) after being dressed with additional 5.84gof urea formaldehyde per liter medium as basal fertilizer,the bagasse composted for2 months was equal to peat medium.

Abstract:Complicated symptoms including antifeedance, protruding of the intistine, dark-ening of the body wall, malformation of the throax emerging of adult organs ap-peared to the larvae of diamondback moth after the larvae were treatecd with thechloroform extract of Ajuga nipponensis. Results in histological and ultrastructuralstudies showed that the larvae treated by the extract caused notable changes tothe mid-and hind-intestine cells,the epidermis cells,silk gland, the wingbuds, Malpighian and fat body.

Abstract:new species and 1 new combination of Cercospora and allied genera on medici-nal plants in Guangdong Province were reported in this paper. They wereCercospora cantonensis P.K.Chi sp. nov. on Dioscorea opposita, C. scrophularicolaP.K.Chi sp. nov. on Scrophularia ningpoensis,C.rabdosiae P.K.Chi et Z.D. Jiangsp. nov. on Rabdosia serra, C. eupatorii-fortunei P.k.Chi et Z.D.Jiang sp. nov. onEupatorium fortunei, C. alismaticola Z.D.Jiang et P.K.Chi sp. nov. on Alismaplantago-aquatica var. orientale, C. stahlianthi Z.D.Jiang et P.K.Chi sp. nov. onStahlianthus involucratus, Corynespora catharanthicola Z.D.Jiang et P.K.Chi sp. nov.on Catharanthus roseus and Pseudocercospora quisqualidis (Narain & B.s.Mehrotra)Z.D.Jiang et P.K.Chi comb. nov. The detail descriptions and latin diagnoses weregiven for the new species. The Type specimens of the new species are deposited inthe Department of Plant Protection, South China Agricultural University,Guangdong; China.

Abstract:Investigations of parasitic nematodes on Lvchee were carried out inGuangdong province from 1991 to 1993. 29 species of nematodes which belong to 17genera, 14 families and 2 orders were identified from 42 root samples and soil sam-ples around roots of Lychee plants in 10 cities (counties). These species were existedas follows: Tylenchus buttenk; T. cylindricollis; T. exiguus T. fasiformis; T.parvissimus; Clavilenchus similis; Tylenchorhynchus claytoni; T. nudus; Pratvlenchuscoffeae; P. brachyurus; Helicotylenchus californicus; H. cornarus; H. digonicus; H.dihysters; H. exallus; Aorolaimus belicus;Scutylenchus quadrifer; Meloidogyne sp;Rotylenchulus reniformis; Macroposthonia xenoplax; Discocriconemella limitanea;Tylenchulus semipenetrans; Paratylenchus elachistus; Aphelenchus avenae; A.meximus; A. Sparsus; Aphelenchoides bicaudatus; Xiphinema americanum;Trichodorus monohystera; T.nanus; Lelenchus sp.. The former 23 speices are new re-cords on Lychee.

Abstract:The pathogen which causes cinnamon die back was identified as Botryodiplodiatheobromae. Monospore culture showed that 204 out of 248 clonies were grey incolour, and the other 44 were black. Based on the difference exhibited in pathoge-nicity. growth rate, reaction to boron, illuminance, production of pigment and resultsof electrophoresis of superoxide dismutase (SOD) and protein, it is suggested that twodifferent physiological race existed, and were labeled as Aand B respectively.

Abstract:田间调查，形态鉴定和人工接种试验证明我国一种由咖啡短体线虫引起的中药材料新病害－山药根腐线虫病。该病在江苏沛县县普遍发生，侵染山药的根系和块茎，田间发病率为３０％－１００％，产量损失高达３０％－５０％。本文还对该病的症状和病原形态进行了系统描述。

Abstract:通过系统调查和室内观察，采用平均历期法，组建以作用因子组配的桔全爪螨自然种群生命表。组配自然种群生殖力表，以内禀增长率（ｒｍ）等作为判断桔全爪螨种群数量发展趋势的指标。分析结果表明，在春季天敌对桔全爪螨种群数量的控制作用是明显的，但天敌作用不足以控制桔全爪螨种数量的增长，需辅助以其他措施进行控制。

Abstract:本文对华南地区番木瓜环斑病毒的Ｙｓ，Ｖｂ和Ｓｍ３个株系和夏威夷ＨＡ５－１弱株系的生物学和血清学等进行了进一步的研究。确证了ＰＲＶ在华南地区至少有３个株系。在株系间亲缘关系方面，华财３个株系间的关系较密切，而与ＨＡ５－１株系的较疏远。在西葫芦植株体内增殖和运转，Ｓｍ株系病毒增殖和运转最快，在体内的浓度最高；Ｖｂ次之；Ｙｓ再次之；而ＨＡ５－１则更次之。

Abstract:１９９１－１９９３年在室内和田间用贝螺杀对大瓶螺进行了一系列浓度的毒力和药效试验。室内试验在１．４×１０＾－＾４＾０％浓度经２４ｈ螺的死亡率为８７．３３％－８８．３３％，田间试验在１．４×１０＾－＾４＾％浓度２４ｈ螺的死亡率为８３．３３％。

Abstract:盆栽香蕉及大蕉在人工降温至１℃时大蕉生长正常，经多效唑处理的香蕉呈轻度冷害而不处理的香蕉产生重度冷害。降温过程大蕉的过氧化物酶活性高于香蕉并保持稳定状态。香蕉的过氧化物酶活性有较大的波动，冷害出现时活性较低。经多效唑处理的香蕉在降温过程中过氧化物酶活性明显强于不处理的香蕉并保持稳定。香蕉与大蕉叶片中的过氧化物同工酶的酶谱类型不同。香蕉经降温处理后有若干酶带消失或活性减弱，大蕉在降温过程中概有酶带的

Abstract:在人工气候室中通过人工降温使香蕉及大蕉受低温胁迫。在气温降压至１℃时香蕉植株出现冷害而大蕉植株仍生长正常。香蕉在冷害过程中，叶片中抗坏血酸含量明显下降。大蕉在低温胁迫过程中，叶片中的抗坏血酸含量一直高于香蕉且降幅很微。香蕉及大蕉的过氧化氢酶活性在温度从１０℃降至４℃时有增强的趋势，继续降温时则下降，但大蕉叶片中过氧化氢酶的活性在整个低温协迫过程均高于香蕉。自然越冬过程田间蕉叶片中抗坏血酸含量及过氧

Abstract:芒果种子离体胚轴的耐脱水力大于其整粒种子的耐脱水力，经硅胶脱水至１１％含水量时仍有７０％发芽率。５％－１０％的蔗糖和脯氨酸预处理可在一定程度上提高芒果离体胚轴的耐脱水力，但效果不显著，含水量为８．７％－３８．６％的干燥离体胚轴经液氮（－１９６℃）贮藏２４ｈ后，生活力完全丧失 。

Abstract:通过气体吸附法收集樟树自然散发的香气，再经气相色谱／质谱联用仪对其成分进行分析，鉴定。得出结果检出近５０种化学成分，并鉴定了其中１８种，含量最高的是α－蒎烯（３３．４６％），其次是莰烯（１２．６３％），桉叶油素（１１．４％）和β－蒎烯（１０．９９％）。

Abstract:家蚕微孢子石和ＭＣ１两种孢子超微结构差异显著。家蚕微孢子虫孢子的外壁，质膜均只见一层结构，极膜呈封闭锥体，膜的层次清晰，极丝平均１３圈，极丝与孢子中轴倾角４１°左右；ＭＧ１微孢子的外壁有３层结构，质膜分２层，极膜层次不清，极丝平均１１圈，极丝也孢子中轴倾角４５°左右，极泡有许多大的颗粒状物。

Abstract:The systematic optimization of applying fertilizer technique in sugarcane was studiedby the best modeling approach according to the principle of systematic engineering.A set of combining apply fertilizer method accorded with the systhentic targetsincluding the yields of high, medium and low, net profit and Sucrose content of canewas worked out by the systematic optimization of the best modeling approach usingcomputer. Other results were also discussed.The results provided the method and the-ory of reasonable applying fertilizer in sugarcane production.

Abstract:Comparing with sucker tissue,the effect of inflorescence tissue from banana,Var.Taiwan No.8, as explant on the result of tissus culture via cluster formation wasstudied. Two kinds of explants were able to develop clusters under the same condi-tion,but differences were observed in the induction frequency and multiplication in-dex. However,rooting transplanting of them were found almost the same.

Abstract:应用同工酶分析技术，分析了水极原产地３个天然小群体的遗传结构。结果表明，水杉群体具有较高的分子变异水平，３个小群体的多态座位百分率达８３．３％±０．００７９。小群体间的分化程度不高，３个小群体平均遗传距离为０．０８５７±０．０３１８；同工酶测定的总变异中，９１．４％的变异来自小群体内，仅８．６％的变异来自小群体间。

Abstract:在雷诺数（Ｒｅ）为（１－１２）×１０＾４范围内，对饮料厂的卫生配管系统所用的光滑不锈钢圆型材进行了紊流摩擦系数的测试。在此基础上，分析了常用的６个经验公式计算值与实测值的误差，并提出了该种管子紊流摩擦系数经验公式。结果表明，舍维列夫式，全苏热工研究所式，布拉修斯式计算值与实测值基本一致。本文的经验式，上述３式的计算值与实测值的剩余方差分别为２．６１１×１０＾－＾７，４．６５１×１０＾－＾７及５．０

Abstract:This paper proves two necessary and sufficient conditions for a matrix to be similarto a diagonal matrix, and provides a simple method for constructing the similaritytransformation matrices of a diagonalizable matrix.

Abstract:A method was described for the determination of trace germanium by GFAAS,in which the matrix modifier was Mg and Pd. This method has been used to analyseorganic germanium in ginseng.The analytical results were satisfactory.

Abstract:In this p aper HPLC methods the determination of sumiseven and itS intermediateis desctribed.A Micro Si 5 Column and mobile phase: hexane/isopropanol and UVdetector were used for deterimnation,with a recovery of 97.97%.

Abstract:Pot cultured wheat plants were used to carry out studies on normal absorptionamount of rare earth element in various organs.Distribution of rare earth elementin various D period of the cycle of wheat was also analysed.

Abstract:本文在前人研究的基础上对荧光测定微量硒作了进一步的改进与简化，结果表明，操作简便易行。硒与２，３－二氨基萘在酸性条件及适当的温度下，形成络合物。用ＥＤＴＡ掩蔽干扰离子，以环己烷萃取，取其有机相直接在ＨＩＴＡＣＨＩ６５０－１０ＬＣ荧光检测器５５５ｎｍ处（发３７４ｎｍ）测荧光强度。避光保存时络合物至少稳定２４ｈ。相对标准差在３％－５％之间。

Abstract:Make investigate Nitrate and nitrite content analysis of 127 samples of 27 vegetablespecies from S hihezi Market was carried of in a svrvey, and with the aid of the Ac-ceptable Daily Intake for man(ADI) value recommended by World Health Organization(WHO), a dietetic hygiene evaluation of them was made.

Abstract:本文采用双波长紫外扫描法测定饮料中糖精钠的含量。样品经乙醚提取，用展开剂三氯甲烷：丙酮：甲酸（９：３：０．１）展开，用岛津ＣＳ－９３０型双波长薄层扫描仪λｓ＝２２５ｎｍ，λＲ＝３５０ｎｍ时进行扫描，本法灵敏，准确，简便，用样量少，便于掌握，回收率为９３．７％－１０４．６％。