不同复配基质理化性质及其对辣椒幼苗生长发育的影响

为确定适宜辣椒无土穴盘育苗基质配方,以玉米芯为发酵原料,EM酵素菌、有机物料腐熟剂、金宝贝菌剂为发酵菌剂,以筛选出最佳的发酵菌剂,后将用最佳菌剂发酵好的玉米芯与蛭石、珍珠岩按不同比例复配,进行育苗配比优化试验。结果表明,EM酵素菌为最佳发酵菌剂;玉米芯固持作用差,适合与其他基质复配,可形成理化性质良好的有机型基质,以复配基质处理A1（玉米芯：蛭石=1：1）和A4（玉米芯：蛭石：珍珠岩=2：1：1）辣椒幼苗干质量、鲜质量、壮苗指数较高,与对照水平相似,且出苗率较高,出苗期较集中。     

Dietary intake of probiotics and maslinic acid in juvenile dentex (Dentex dentex L.): effects on growth performance, survival and liver proteolytic activities

Two feeding trials were carried out to evaluate the efficiency of probiotics and maslinic acid, on growth and survival of juvenile dentex; liver proteolytic activities were also investigated in the second trial. For experiment 1, triplicate groups were fed six diets with two probiotics (Bacillus toyoi, T, and B. cereus, E) at increasing levels (0.5, 1 and 2 g kg^?1 diet) and a control diet. Growth and feed conversion were not significantly influenced by the probiotics. The diet T1 produced the lower mortality, whereas diet E1 rendered the higher mortality. It was concluded that no significant effects on growth and survival were found following the addition of two kinds of probiotics to dentex diets. However, the diet E0.5 showed a tendency to ameliorate the growth and feed utilization of the diet. In a second trial, triplicate groups were fed four diets with increasing levels of maslinic acid (0, 20, 40 and 80 mg kg^?1 diet). Growth of fish given diets with the highest level of maslinic acid (D80) was slightly but not significantly lower than those from the other groups. Furthemore, mortality of fish fed diet D40 was the lowest. Changes in liver proteasome and endoprotease activities measured on sodium dodecyl sulphate (SDS)/gelatin gels were also detected in a dose‐dependent manner. It was concluded that a dietary maslinic acid at a level of 80 mg kg^?1 diet seems to be too high for juvenile dentex to maintain a maximal growth and survival rate.     

砂壤质潮土夏玉米适宜的化肥种类研究

采用田间试验研究Agro Services International Inc（ASI）推荐施肥、缓/控释肥、保水型复混肥和普通复混肥对夏玉米产量、SPAD值及养分吸收积累的影响。结果表明,夏玉米施用缓/控释肥和ASI推荐施肥增产效果较好,分别比农户习惯施肥处理增产11.0%和9.8%,保水型复混肥没有显著增产效果。夏玉米专用缓/控释肥养分缓慢释放可弥补砂壤质潮土保肥性差的缺点,能维持夏玉米各生育时期较高的叶片叶绿素含量,促进夏玉米对氮、磷、钾养分的吸收利用,提高干物质积累量,具有显著增产效果,是砂壤质潮土区夏玉米适宜的化肥品种。     

铃铛果红枣复合饮料工艺技术研究

以铃铛果为主要原料,研究了铃铛果和红枣复合饮料工艺,利用单因素试验和正交试验,对复合饮料的配方与工艺条件进行优化。结果表明：铃铛果汁和红枣汁1∶1情况下添加量为33%,蔗糖用量为9%,柠檬酸用量为0.05%,复合稳定剂的添加量为0.03%,115℃,灭菌5min,产品稳定性良好。     

中草药复方注射剂治疗仔猪腹泻的试验研究

[目的]探讨中草药复方注射剂对仔猪腹泻的治疗效果。[方法]提取中草药有效成分,制备中草药复方注射剂。用不同剂量(0.25、0.50和1.00 ml/kg)的中草药复方注射剂对人工感染的仔猪腹泻进行治疗试验。[结果]经过3 d治疗后,3个剂量组均有明显的治疗效果,治愈率可达60%~95%,极显著高于感染对照组,剂量以0.5 ml/kg为佳。将制备的复方注射剂和临床用的硫酸庆大霉素、诺氟沙星、头孢噻呋混悬、硫酸黄连素和博落回注射剂对人工感染的仔猪腹泻进行疗效对比试验,结果表明复方注射剂的治疗效果最好,治愈率达98.0%,明显优于其他注射剂。[结论]该中草药复方注射剂是临床上治疗仔猪腹泻的有效药物。     

复叶中小叶主叶脉及其生长角的提取

复叶中小叶的生长角度可作为特征参数识别复叶植物。首先利用改进的Sobel算子和中值滤波提取复叶叶轴和小叶的主叶脉,进而利用Hough变换线性检测获取复叶叶轴和小叶主叶脉的直线,利用所检测的直线计算得到小叶的生长角度。此外,对基于Hough变换线性检测的适用性进行探讨,发现Hough变换线性检测可以很好地适用于小叶主叶脉呈直线的复叶;但对于小叶主叶脉呈现弯曲状时,Hough变换线性检测时会出现明显的缺陷,需要采用外接矩形方法提取小叶的生长角度。提取结果表明,所采用的算法可以有效地提取复叶中小叶的生长角度。     

蛹虫草与黄伞复合多糖抗氧化活性研究

[目的]研究蛹虫草与黄伞复合多糖的抗氧化活性。[方法]采用超声提取法分别提取蛹虫草多糖和黄伞多糖,并将二者按不同比例复合后,在不同浓度下进行羟基自由基的清除试验。[结果]在一定的剂量配比下,蛹虫草多糖与黄伞多糖表现出很好的复合效果,清除羟基自由基的能力较单独多糖有明显的提升。其中复合比例为2∶1,浓度为16 mg/ml时清除率较蛹虫草多糖提高了79.82%,是黄伞多糖的3.6倍;通过方差分析得出,复合多糖与单独多糖之间存在显著差异(P0.05),既表现出了较好的协同作用又呈现出很好的量效关系。[结论]复合后的多糖的活性提高,表现出了较好的清除羟基自由基清除效果。