小议提高用材林森林生产力的途径

通过选用适当的培育方式、遗传改良、林分结构的配置、立地的选择和调控等4个方面的分析论证,论述了寻求提高用材林的森林生产力的途径。     

梅花鹿茸胶囊增强免疫力功能的研究

目的观察梅花鹿茸胶囊对免疫功能的影响。方法1.MTT法（刀豆素A诱导的小鼠脾淋巴细胞转化试验）。2.耳肿胀法（二硝基氟苯诱导小鼠迟发型变态反应）。3.Jerne改良玻片法（抗体生成细胞检测）。4.血凝法（血清溶血素测定）。5.小鼠碳廓清试验。6.半体内法（小鼠腹腔巨噬细胞吞噬鸡红细胞试验）。7.乳酸脱氢酶测定法（NK细胞活性测定）。结果梅花鹿茸胶囊对试验动物产生如下作用：1.增强小鼠细胞免疫功能。2.增强小鼠体液免疫功能。     

螺旋藻的营养价值及药用特性

 螺旋藻是一类可供人和动物食用药用的微生物,重点阐述了螺旋藻及其多糖的抗疲劳、抗福射、抗癌、抗病毒作用,营养特性及其免疫力提高作用。     

Root Growth of Two Soybean [Glycine max (L.) Merr.] Cultivars Grown under Different Groundwater Level Conditions

Abstract

Soybean yield is low in the fields with a low groundwater level during summer due to drought stress. By raising the groundwater level using Farm-Oriented Enhancing Aquatic System (FOEAS) the yield of soybean cultivar Sachiyutaka can be increased, but not that of Fukuyutaka. Here, we examined the effect of the groundwater level on root growth and its dynamics in these two cultivars. Three of the four experiments demonstrated that root elongation ceased just below groundwater level in both cultivars. However, when the groundwater level was kept at 35 cm or deeper, the root growth at an early growth stage was more vigorous at a deeper layer in Fukuyutaka than in Sachiyutaka, but at the mid-growth stage root growth in Sachiyutaka became similar to or exceeded that of Fukuyutaka. These results indicated that the optimum control technique for the groundwater level differed with the cultivar. The groundwater level for Sachiyutaka should be kept relatively high at an early growth stage. Further studies will be needed to clarify the optimum control technique for maximizing the yield of Fukuyutaka that have a fast root growth at an early growth stage.     

废纸浆原料家具产品的成型与增强处理研究

以废纸回收再利用为目的进行了废纸浆原料应用于家具产品领域的相关性及适用性试验,开展了废纸浆原料家具产品的成型与增强处理研究,获得了废纸浆原料家具产品的成型方式、结构性能和工艺方法,确定了赋予此类产品最佳的材料性能参数与依据,以期最大限度地回收再利用此类材料.     

文冠果脂肪积累规律及提高油脂产量的技术措施

[目的]研究提高文冠果油脂产量的技术措施。[方法]对文冠果进行不同施肥处理,通过定期测定文冠果的脂肪、蛋白质、淀粉含量研究了不同施肥处理对文冠果脂肪积累的影响及提高文冠果油脂产量的措施。[结果]在种子发育与充实期施有机肥和根外喷施氮、磷混合肥能加快文冠果种子的油脂积累速率。7月30日采摘的施有机肥和根外喷施氮、磷混合肥的文冠果种子的油脂产量均比对照高。8月20日采摘的施有机肥和根外喷施氮、磷混合肥的成熟种子的油脂产量分别比对照高55.9%和28.4%。根外喷施0.1%硫酸锌的文冠果种子油脂产量比对照高1倍;根外喷施高锰酸钾可将其油脂产量提高44.9%～75.1%,根外喷施0.1%硫酸亚铁可将其油脂产量提高48.2%。[结论]文冠果油脂产量随着千粒重的增加而提高;合理施肥及适当根外喷施微量元素能显著提高文冠果的油脂产量。     

强化板·中密板和刨花板甲醛释放量与测定方法的关系

[目的]不同人造板类型不同测定方法间的甲醛量比较,可科学地评价不同方法间的相关性和特殊性,筛选快捷、简便的甲醛释放量测定方法。[方法]采用厂家样品送检和定期进厂抽检相结合的办法,收集有关厂家的强化板、中密板和刨花板样品,持续3年。[结果]碘量法对省内强化板、中密板和刨花板生产厂家产品持续3年的抽检表明平均甲醛含量变化趋势为中密板>强化板>刨花板,相应值为260.2和199.01、38.6 mg/kg。刨花板全部产品符合E1或E2限量标志,中密板部分产品符合E2限量标志、部分产品超标,强化板部分产品符合E1、E2限量标志,部分产品超标。不同人造板甲醛含量在厂家间的差异性不显著。中密板和刨花板的光度法甲醛含量大于碘量法、大干燥器法甲醛释放量高于小干燥器法,强化板的变化趋势相反。碘量法和光度法所测定甲醛含量在强化板、中密板和刨花板间的直线相关性均达极显著水平,大干燥器和小干燥器法在中密板和刨花板间的直线相关性达显著水平、在强化板间的直线相关性不显著。不同类型人造板甲醛含量和释放量间存在对数关系,中密板的相关性显著、强化板和刨花板部分方法间的相关性达显著水平。[结论]为人造板甲醛量不同测定方法值间的转化提供了依据。     

Growth and Yield Responses of Two Soybean Cultivars Grown under Controlled Groundwater Level in Southwestern Japan

Abstract

One of the limiting factors of soybean yield in southwestern Japan is soil moisture fluctuation from flooding to drought. The Farm-Oriented Enhancing Aquatic System (FOEAS), which consists of underdrain and sub-irrigation systems and can keep groundwater levels stable, was developed in 2005 to solve this problem. To obtain basic information on soybean cultivation using the FOEAS in southwestern Japan, we examined the growth response to groundwater level by using two cultivars (cv. Fukuyutaka and Sachiyutaka) in 2008 and 2010. Plant growth, yield, yield components and seed components (protein and oil contents) were analyzed. We also studied the effect of sowing time (normal or late). The groundwater level was controlled at depths of 20 and 35 cm or not treated (NT) as a control. The groundwater level could be kept at the target depths (20 and 35 cm) by FOEAS throughout the experimental period, but that in the NT plot fluctuated greatly. The growth and yield of Sachiyutaka might be increased by FOEAS, especially in late sowing, but the yield of normal sown Sachiyutaka was decreased in the 20-cm plot in 2010. Yield of late-sown Fukuyutaka tended to be decreased in the 20-cm plot. These results suggest that (1) the optimum groundwater level for yield of Sachiyutaka is between 20 and 35 cm, regardless of sowing time and (2) the groundwater level should not be kept at 20 cm for late-sown Fukuyutaka. Further studies are needed to determine the optimum groundwater level for each cultivar.     

NEB对重茬地黄生长发育及有效成分的影响

[目的]研究施用NEB对重茬地黄生长发育及有效成分的影响。[方法]通过对重茬地黄出苗率、保苗率、单支重量及平均窝重、根茎是否膨大、梓醇含量的测定,分析NEB对重茬地黄生长发育及有效成分的影响。[结果]施用NEB能有效提高地黄出苗率、保苗率,有效防止地黄死苗;提高有效成分梓醇含量。相比对照,低浓度NEB(3 000 mL/袋兑水)对地黄平均每窝重量和根茎膨大影响显著,解决了连作障碍导致地黄块根不膨大的问题。[结论]施用NEB可作为解决重茬病害的有效途径。     

广西木薯产业提升制约因素与对策

木薯产业是广西特色优势产业,产业提升对广西经济发展具有重要意义。根据广西木薯产业发展现状,指出广西木薯产业提升的必要性和紧迫性;分析广西木薯产业发展面临的主要问题和产业提升的主要要制约因素;提出重新认识木薯产业的战略地位,推进木薯产业跨越式发展;选育推广高产高粉木薯品种,推进木薯品种更新换代;推广木薯集约化栽培技术,大幅度提高单产;整合加工企业, 充分发挥加工企业的龙头作用;强化“企业、薯农联动”机制,建立健全“种植、加工一体化”产业发展模式;完善木薯产业链,提高产业整体经济效益等提升广西木薯产业的对策。