蜂蜜模拟麦蚜蜜露危害对小麦产量 和主要营养品质的影响

在孕穗、抽穗扬花、灌浆3个小麦生育期,分别用蜂蜜模拟麦蚜蜜露危害小麦,最后分小区收获、脱粒、室内考种并测定小麦产量和主要营养品质指标。结果表明,随着蜜露危害程度的加重,小麦千粒重、面粉淀粉含量、湿面筋含量、蛋白质含量在小麦3个生育阶段均呈下降趋势。3个生育期分别被害后,小麦籽粒千粒重、蛋白质含量受影响程度最明显,湿面筋含量次之,淀粉含量变化不大。蜜露危害对小麦产量与主要营养品质的影响,在小麦3个生育期之间存在一定差异。     

江西省农村中学英语教师专业素质培养的路径研究

对江西省农村中学英语教师专业素质进行了深入调查和研究,并在此基础上提出了可行的、合理化的对策,为英语教育的改革和发展提供有力的数据支撑;同时也为地方教育行政主管部门制订政策提供一定的理论依据.     

Utilization of durum wheat landraces in East Shewa,central Ethiopia: Are home uses an incentive for on-farm conservation?

The study was conducted in East Shewa, central Ethiopia, where durum wheat landraces were once popular, but were displaced and re-introduced. Combinations of survey techniques are employed to document the different home uses of durum wheat landraces and to assess whether these serve as an incentive to on-farm conservation. The findings reveal that wheat landraces have multiple dietary and sociocultural uses that contribute to the maintenance of landraces on-farm. Temporal analysis of historical information showed that (1) richness in food traditions is associated with a high level of landrace diversity on-farm; (2) food traditions in East Shewa did not change radically as a result of the integration of farmers into the market economy; and (3) farm households still have an appreciation of, and a preference for, the home-use related qualities of the landraces, this despite their long term disappearance and the subsequent availability of several improved wheat varieties. The study illustrates the relationship between the local availability of landrace wheats and their on-farm survival. The home uses of landraces plays an instrumental role in the promotion of on-farm (in situ) conservation. Augmenting conservation activities with non-breeding approaches (e.g., awareness-creation) would support the survival of wheat landraces for the foreseeable future. Bayush Tsegaye (PhD) is a graduate from Noragric – the Department of International Environment and Development Studies, of the Norwegian University of Life Sciences. Prior to joining the University, she was engaged in various development programs in Ethiopia affiliated with government institutions as well as national and international non-governmental organizations. Her research interests include community management of plant genetic resources, food security, and gender issues. Trygve Berg is an Associate Professor at Noragric – the Department of International Environment and Development Studies, of the Norwegian University of Life Sciences. His research interests focus on the management of plant genetic resources and participatory plant breeding.     

Effects of semidry flour milling on the quality attributes of rice flour and rice noodles in China

To investigate the effects of semidry-milling on the quality attributes of rice flour and rice noodles, the properties of rice flours and cooking properties of rice noodles prepared with wet-, dry- and semidry-milled rice flours were characterized. The level of starch damage of semidry-milled rice flour at 30% moisture was significantly decreased to the level of wet-milled rice flour (P < 0.05); the whiteness of dry-milled rice flour was decreased compared with wet-milled rice flour (P < 0.05), while that of semidry-milled rice flour was not; the wet- and semidry-milled rice flours showed similar morphology and water hydration properties; the dry milling method reduced significantly the hardness, chewiness, and resilience of rice noodles (P < 0.05) compared with wet-milling, but semidry-milling did not; the cooking qualities of rice noodles produced by semidry-milling were comparable to wet-milling. It indicated the semidry-milling at 30% moisture may provide the protective effects on the characteristics of rice flours, which could be used to produce similar qualities of rice noodles to the wet-milling.     

白马骨无性扦插繁殖技术的优化

采用正交试验研究方法,以生根率、平均根长和平均生根数3个因子为生根质量的指标,对白马骨进行无性扦插繁殖技术的优化试验。结果表明：插穗类型对白马骨无性扦插繁殖生根质量的影响最大,扦插基质次之,赤霉素(GA₃)浓度第3,处理时间影响最小。当插穗为白马骨带叶茎段,扦插基质为红黄壤,GA₃浓度为 100 mg.L^_－1,处理时间为6 h 时,白马骨扦插的生根质量最佳。     

施用碘肥对油麦菜产量、品质及碘富集效果的影响

通过温室试验,探索不同用量的碘肥对作物产量及作物富碘量的影响。供试作物为油麦菜,碘肥来源为碘化钾,在满足油麦菜正常生长所需肥力的基础上,试验设计4个不同用量,施用方式分别为底施和喷施。试验结果表明,油麦菜对碘的富集作用明显,随着施碘量的增加油麦菜的富碘量呈逐渐增加的趋势;同时研究得出,随着施碘量的增加油麦菜的产量呈先增加后降低的趋势,碘化钾的施用量为5 g/m²时油麦菜产量最高,最高产量为49290.15 kg/hm²,施用碘化钾均能不同程度的增加油麦菜的产量,增加率分别为10.18%、1.02%和3.39%;油麦菜的Vc含量均有不同程度的增加,喷施处理对提高Vc含量效果最好,Vc含量为24.7 mg/kg;油麦菜的可溶性糖含量均有不同程度的增加,粗纤维含量和硝态氮含量在施用碘化钾后均有不同程度的降低,其中喷施浓度为0.1%的碘化钾小区油麦菜可溶性糖含量增加最高,纤维素含量和硝态氮含量最低;施用碘肥以后,土壤中碘含量均呈现出不同程度的上升,其中施用10 g/m²时土壤中碘含量最高,达到10.03 mg/kg。综上,蔬菜对碘的富集作用明显,因此,通过施加碘肥培养富碘蔬菜来防治碘缺乏病具有广阔的应用前景。     

论文献资源建设工作者继续教育的必要性

从网络环境对文献资源建设工作带来的影响出发,探讨了文献资源工作者适应新时期发展的需要进行继续教育的必要性、工作人员应具备的素质以及继续教育的途径等问题。     

以就业为导向提升大学生思想道德素质

适应新形势,以就业为切人点,采取多种形式．加强高校思想政治工作．提高大学生的思想道德素质,是一项刻不容缓的任务。     

网络环境下参考馆员的素质

本文论述了网络环境下提高参考馆员素质的必要性,分析了参考馆员的素质结构,提出网络环境下提高参考馆员素质的对策和措施。     

硒对赤豆芽苗菜产量品质及保护酶活性的影响

以东北赤豆(Vigna angularis)为试验材料,分别用0、2、4、6、8 mg/L的Na2Se O3溶液浸种处理12 h,研究硒对赤豆芽苗菜产量、品质及保护酶活性的影响。结果表明:适量的硒(4~6 mg/L)浸种对赤豆芽产量和品质的提高非常有利。赤豆芽苗菜VC含量、可溶性糖含量分别在硒浓度为4、6 mg/L时最高;8 mg/L处理时,硝酸盐含量最低。一定浓度的硒浸种可以显著提高赤豆芽菜保护酶活性,6 mg/L处理SOD、POD活性最高;4 mg/L处理CAT活性最高。本试验条件下,最适宜赤豆芽苗菜生长的Na2Se O3浓度为4~6 mg/L。