紫花槭的抗寒适应性分析

通过野生树种紫花槭的引种和人工繁殖栽培,对紫花槭的抗寒适应性等进行了观测记录和分析研究,掌握了紫花槭具体的寒害胁迫情况和耐寒力的变化趋势,对紫花槭的抗寒适应性作出了综合评价。     

不同外源物质调控对紫花槭生长的影响

本实验拟为解决紫花槭圃地育苗生长势弱、生长缓慢提供技术参考,通过利用赤霉素(GA3)、吲哚乙酸(IAA)、腐殖酸液肥、尿素、磷酸二氢钾、氯化钾等外源物质,对圃地紫花槭幼苗进行生长调控,测定分析其对紫花槭各项生长指标的影响。实验结果:高浓度的赤霉素使紫花槭徒长,浓度为300ppm吲哚乙酸,6ml·L-1腐殖酸液肥,4g·L-1尿素和5g·L-1磷酸二氢钾对紫花槭各生长指标有不同的促进作用;氯化钾作用不明显且易对紫花槭叶产生药害。     

水杨酸对紫花槭抗寒生理指标的影响

通过室内实验生理生态学的方法研究了外源添加剂水杨酸（SA）对紫花槭抗寒性的影响。研究表明,在低温胁迫下,通过添加1.0mmol/L水杨酸能够显著降低（实验组）紫花槭的丙二醛（MDA）积累量、电解质渗透率;其可溶性糖含量明显高于未用SA处理的对照组。     

小陇山林区百合科观赏植物资源及其园林应用

小陇山地处温带南缘与北亚热带的过渡地带,气候温和湿润,适宜林木繁衍生长。作为我国华北、华中、喜马拉雅、蒙新四大自然植被区系的交汇处,植物种类繁多,是温带向亚热带过渡的植物基因库。通过多年的野外实地调查和文献研究,发现该地区约有百合科野生观赏植物23属55种,从资源分布、生态习性、观赏特性、栽培要求等方面对这些植物进行介绍,并对其园林应用做出分析建议。     

小丑火棘的特性及其园林应用

小丑火棘，蔷薇科火棘属常绿灌木，是由日本培育出的火棘的栽培变种，单叶，叶卵形，倒卵状长圆形或倒卵形，先端钝圆开微凹，边缘有钝锯齿。叶片有花纹，似小丑花脸，故名小丑火棘，冬季叶片呈粉红色。花为白色，花期3～5月，果期8～11月，红色的小梨果，挂果时间长达3个月。     

白牛槭和假色槭种子繁育技术研究

对黑龙江省槭树科秋季红叶植物中具有较高观赏价值的白牛槭和假色槭两种植物,进行了多年的种子繁育研究,从小试到中试,形成了一套完整的、适合于生产的种子繁育技术,使白牛槭和假色槭的出苗率达80％以上。     

假色槭人工驯化生长特性浅析

通过野生优良绿化树种假色槭的引种驯化和人工繁殖栽培,对其驯化情况、适应程度、生长特点等进行了详细的观测记录和分析研究,提出了相关应用措施和目前存在的问题。     

外源物质对元宝槭生长及生理特性的影响

利用外源物质对元宝槭进行调控,并且根据对元宝槭秋季叶色呈色期元宝槭生理指标的测定;发现2.5ml/L的矮壮素可以起到抑制元宝槭生长,消除抽条现象的作用;20g/L的蔗糖可以提高元宝槭叶色呈色作用。     

植物矮化激素对茶条槭生长及观赏性作用的研究

利用不同植物矮化激素对茶条槭进行喷施试验。结果表明,不同激素对茶条槭的生长效果及观赏性有明显的作用;对茶条槭矮化效果最佳的是10ml/L的国光矮壮素和浓度为2g/L的国光多效唑。     

新食品原料——枇杷叶研发现状与展望

枇杷叶在我国具有很长的药食两用历史,2014年枇杷叶被批准为新食品原料,因此具有潜在的开发利用价值。本文围绕枇杷叶的加工与利用,对其食用传统、有效成分、功能性及其相关食品的研发进行综述,并就存在的主要问题进行梳理、提出建议,以期为枇杷叶在食品加工领域的产品研发提供参考。     

绞股蓝荷叶复配茶包研发

以荷叶和绞股蓝为主要原料,对荷叶与绞股蓝复配比例、过筛目数、水的添加量和冲泡时间4个因素进行单因素试验,并根据单因素试验结果,设计L9 (34)正交试验。结果表明,绞股蓝荷叶复配茶包最佳工艺配方为:荷叶添加量与绞股蓝添加量的比例为1:4、过筛目数为70μm、水添加量为150 mL、冲泡时间为7 min,此条件下的荷叶绞股蓝复配茶包感官评分最高,为95分。     

An assessment of ordinary landscapes by an expert and by its residents: Landscape values in areas of intensive agricultural use

The expert-based approach to landscape assessment developed in North America during the 1970s is still largely used in planning. It has proved its usefulness for the protection and the management of landscapes with remarkable visual attributes. However, facing growing social demands for the quality of surroundings, ordinary landscapes also raise great challenges for planning. But, to what extent is the expert-based approach to landscape assessment able to capture the value of these ordinary landscapes? What might be the more appropriate method for this purpose? This paper addresses these questions through an empirical research project in areas of intensive agricultural use in Quebec (Canada). The aim of this research was to measure and compare the ability of an expert-based approach and of a lay people-based approach, also named experiential approach, to capture the most valued components of ordinary landscapes. These methods were applied to two study areas. The first one has no recognised landscapes in any planning document while the second one has recognised landscapes for regional tourism. Forty-six inhabitants and an expert were invited to evaluate the landscapes of the study areas. The results have allowed comparison of the components valued by the expert and by the inhabitants as well as the criteria used in the assessment. They revealed differences between the expert and the lay people assessment. For inhabitants, the value of ordinary landscapes is based on a set of criteria related to emotion, to everyday experience and to their intimate knowledge of places. Thus, the formal visual criteria used by the expert appear to be clearly less important in the evaluation by lay people. As the expert perspective in landscape assessment is more closely associated to the experience of an individual which cross the territory (ex.: tourist), this paper concludes that to capture the value of ordinary landscapes in a planning perspective, a combination of approaches is necessary.     

从龙葵果中提取食用红色素及色素稳定性的研究

以成熟的龙葵果为原料提取食用红色素,通过优化工艺、确定单因素条件、设计正交试验,以527nm波长的吸光度值衡量色素提取效果和稳定性;最优化的提取条件为:柠檬酸水溶液提取剂pH为1.72,样品加量3.35g/100mL,提取温度60℃,浸提时间60min;龙葵红色素提取液长期接触光、空气和Fe3 ,稳定性下降,因此,在提取、干燥和储存时要尽量避免长时间接触光和空气、避免与铁制容器直接接触。