橡胶木的防变色试验

通过不同浓度的不同防变色剂分别对未处理和经过硼防腐剂和Parachem防腐剂加压处理的橡胶木锯材进行浸沾处理，对其防变色效果进行了研究。结果表明，无论经过硼防腐剂处理与否，用防变色剂进行短时间（30s)的浸沾处理，均可有效地防止橡胶木的蓝变和发霉，保护期可达4周以上。     

微米木纤维JGD型木橡胶减震器的建模理论研究

选用可再生资源---红松木材的加工剩余物和边角碎料切削而成的木纤维为原料,用数学建模方法构造JGD型木橡胶减震器的外部造型,通过MATLAB验证JGD型木橡胶减震器仿真模型的通用性和精确性。动态输入模型参数,得到不同模型所需的加工尺寸,制作与模型相对应的模具。在模具上完成微米木纤维JGD型木橡胶减震器的整个模压加工过程,既能保证木橡胶减震器外形尺寸,又降低其生产成本,可为微米木纤维JGD型木橡胶减震器的加工系统实际生产提供理论依据。     

顶果木灰霉病病原鉴定

【目的】对顶果木灰霉病病原菌进行鉴定,以明确其分类地位,为顶果木灰霉病的防控提供参考依据。【方法】从广西南宁市良凤江国家森林公园苗圃基地采集顶果木灰霉病病害标本,对病害进行症状描述、组织分离和致病性测定,观察致病菌的形态学特征并进行r DNA-ITS序列分析。【结果】分离获得顶果木灰霉病致病菌代表菌株DGM5-6。DGM5-6菌株在PDA上长势良好,毛绒状菌落初期呈淡黄白色,后期逐渐变为灰白色;气生菌丝呈放射状生长,开始为白色,生长后期为灰色;病菌分生孢子梗单生,灰色至褐色,分枝,顶端膨大成球形,其上有多个小梗,梗上聚生卵形、圆形或椭圆形的分生孢子;分生孢子呈浅灰色至无色,单胞,大小为10.0-12.5μm×7.5-10.0μm。DGM5-6菌株ITS基因扩增片段长度为535 bp,其r DNA-ITS序列与Gen Bank中灰葡萄孢（Botrytis cinerea Pers.ex Fr）序列的同源性达99%。【结论】引起广西顶果木灰霉病的病原为灰葡萄孢（Botrytis cinerea Pers.ex Fr）,该病原菌寄主范围广,应结合苗圃清园、圃地治理、合理密植、生物防治和化学防治等进行防控。     

对五株典型霉菌形态的观察和比较研究

对教学常用的五株典型霉菌,即根霉,毛霉,河内白曲(米曲霉),黑曲霉和黄曲霉经分离、纯化、培养后,对它们的形态进行了观察和比较研究。其结果是根霉的假根发达,毛霉的囊轴清晰,河内白曲的足细胞健壮,黑曲霉和黄曲霉的顶囊良好。     

ZMCJ型系列纸浆模快餐具生产线可行性分析

分析了纸浆模快餐具的生产成本，对产品市场前景和生产线投资规模进行了预测，介绍了产品工艺流程及生产设备。     

Quantitative study on solid slag film’s crystallinity of mould fluxes by using DSC method

The method to determine the crystallinity of solid slag film is established by analyzing the DSC curve of solid slag film and corresponding quenched slag. The accuracy of the method is investigated by measurements of prepared samples whose crystallinity is given. In addition, the solid slag films of mold slags used to cast medium carbon steel and low carbon steel are obtained by heat flux simulator in laboratory, and the crystallinity of the two kinds of slag film are also measured by DSC method. Experimental results indicates that the crystallinity of solid slag film can be determined by comparing the crystallization enthalpy of solid slag film and corresponding quenched slag during heating process, and the relative error is within 5.03%. For medium carbon steel, the crystalline fraction of solid slag film is 88.6%, while the crystalline fraction of solid slag film corresponding to low carbon steel is 55.0%. The results are consistent with actual structure of solid slag films.     

Inheritance of resistance to Botrytis cinerea Pers. in Cicer arietinum L.

Summary Chickpea (Cicer arietinum L.) line ICC 1069 was selected as resistant parent after screening for resistance to grey mould (Botrytis cinerea Pers.) under artificial inoculation conditions. It was crossed with four high yielding susceptible varieties of chickpea. Crosses ICC 1069 × BGM 413 and ICC 1069 × BG 256 showed monogenic dominant resistance in ratio of 3R (resistant): 1S (susceptible). However, in crosses, ICC 1069 × BGM 419 and ICC 1069 × BGM 408, a ratio of 13S (susceptible) : 3R (resistant) was obtained indicating the presence of epistatic interaction. The results pointed towards the presence of a type of major gene resistance to grey mould in chickpea.     

50%嘧霉胺·多菌灵WP防治番茄灰霉病田间药效试验

[目的]明确50%嘧霉胺.多菌灵WP对番茄灰霉病的防治效果和安全性,选择其在田间的适宜用量,为该农药的推广应用提供科学依据。[方法]设置了不同浓度和与其他药剂对比的7个处理,研究各处理对防治番茄灰霉病的田间药效。[结果]结果表明,用50%嘧霉胺.多菌灵WP 600 g/hm2防治番茄灰霉病,对叶片和果实的防效分别为82.3%和81.5%,显著高于对照药剂40%欧诺SC 480g/hm2、30%齐乐WP 1 050 g/hm2和50%多菌灵WP 1 000 g/hm2的防效。[结论]在用量450~600 g/hm2的情况下,该农药防治效果可达70%~85%,对作物安全。     

苹果霉心病的研究Ⅰ致病菌种类的调查鉴定

自苹果花期至贮藏期定期从花器、幼果、成熟果实和贮藏过程中的果实分离获得菌株。用孢子悬浮液经果实的萼筒注射接种红星苹果的成熟果实，发病后分离获得病原菌纯培养物。根据培养性状、子实体和孢子的形态共鉴定出１１属的１２种及８个类型的致病真菌。