‘仲秋红'油桃标准化关键技术研究

经过2004～2009年对'仲秋红'油桃标准化关键技术的试验研究,摸清了'仲秋红'油桃的植物学特性和生长结果规律,探索其配套栽培技术,制订出其标准化生产技术规程,编制了周年管理历,为今后进行产业化开发提供了技术保障.     

不同干燥工艺对莲子品质的影响

为深入了解不同干燥工艺对莲子干燥后品质的影响，该文以干燥后莲子的收缩率、复水率、抗性淀粉(RS)含量、色泽和组织结构为考察对象，研究了自然干燥、热风干燥、真空干燥、冷冻干燥、微波干燥和微波—热风联合干燥等6种不同干燥工艺对莲子品质的影响。结果表明：微波—热风联合干燥莲子的收缩率小，复水率高，RS含量低，色泽与莲子原始指标较接近，且能够较好地保持莲子的原始组织结构；微波干燥莲子的品质仅次于微波—热风联合干燥莲子；冷冻干燥莲子的收缩率和复水率均最佳，但RS含量高，色泽较莲子原始指标差，且组织结构发生了明显的变形和皱缩；自然干燥、热风干燥、真空干燥莲子的品质均较差。综合考虑，微波—热风联合干燥后的莲子除RS含量较低外，其他品质均较优，可作为最佳干燥方法应用于生产。     

Comparison of breeding bird and vegetation communities in primary and secondary forests of Great Smoky Mountains National Park

We compared breeding bird communities and vegetation characteristics at paired point locations in primary (undisturbed) and mature secondary forest (70-100 years old) sites in Great Smoky Mountains National Park, USA to understand how sites logged prior to creation of the park compare to undisturbed sites following 70 years of protection from human disturbance. We found that bird and vegetation communities are currently similar, but retain some differences in species composition. Rank abundance curves for primary and secondary forest bird communities showed very similar patterns of species dominance. Species composition was also similar on the two sites which shared 24 of the 25 most frequently recorded species. Nonetheless, comparisons of density estimates derived from distance sampling showed three bird species were more abundant on primary forest sites and that one bird species was significantly more abundant on secondary forest sites. Notably, comparisons based on raw counts (unadjusted for potential differences in detectability) produced somewhat different results. Analyses of vegetation samples for the paired sites also showed relative similarity, but with some differences between primary and secondary forests. Primary forest sites had more large trees (trees greater than 50 cm diameter at breast height) and late successional species. Primary forest sites had a denser tall shrub layer while secondary forest sites had a denser canopy layer. Nonetheless, tree species richness, basal area of live trees and number of standing snags did not differ between primary and secondary forest sites. Results indicate that breeding bird communities on sites within the park that were logged commercially 70 years ago are currently quite similar to bird communities on sites with no history of human disturbance. Similarities between the bird communities on previously disturbed and undisturbed sites in Great Smoky Mountains National Park may exceed those on more fragmented landscapes because large patches of primary forest, adjacent to commercially logged sites, remained in the park when it was established in 1935. These patches of primary forest may have served as source areas for commercially logged sites.     

多抗节水型小麦品种沧麦12的选育及利用

[目的]为小麦抗逆育种奠定基础。[方法]结合沧麦12小麦品种的育种经验,阐述沧麦12的育种方法、特征特性和栽培技术。[结果]沧麦12节水、抗寒、抗病、丰产稳产,遗传背景丰富,适宜河北省黑龙港流域冬麦区种植。2013年通过河北省品种审定委员会审定通过,并申请国家植物品种权保护,公告号为CNA010879E。[结论]沧麦12的抗旱耐盐等抗逆性状与丰产性及产量潜力等性状有效结合起来。     

河流生态环境需水量及关键技术研究

综述了河流生态环境需水量的国内外研究进展,从基础理论和计算方法两方面探讨了热点问题,围绕生态水文模型、驱动机制与演变规律、河流生态资产与生态环境需水量的概念关系模型、生态调度模型和生态流量预警等关键技术,提出了河流生态环境需水量的研究模式;对未来的相关研究做了展望。     

H1N1亚型猪流感诊断方法的研究新进展

2009年,甲型H1N1流感在全球多个地方猪和人群中暴发,给人民群众的生命健康带来了巨大威胁,给经济发展和社会稳定产生了严重影响.及时快速的诊断是有效控制疫情大规模暴发的最有效途径之一.近几年随着现代分子生物学技术发展,猪流感诊断方法在快速、准确性方面有了很大提高.对H1N1猪流感概况及猪流感的诊断方法进行了综述.     

小麦黄花叶病毒衣壳蛋白的原核表达及抗血清制备

通过RT-PCR方法扩增获得小麦黄花叶病毒(Wheat yellow mosaic virus,WYMV)的衣壳蛋白(CP)基因,将其连接原核表达载体p EHISTEV,并将重组质粒转化大肠杆菌Rosetta,经IPTG诱导后,可以表达38 k D的融合蛋白。通过切胶回收的方法收集目的蛋白,免疫新西兰长耳兔,制备WYMV CP的多克隆抗体。间接ELISA测定该抗血清效价为1∶2 048,Western blotting分析表明该血清可以与病株中CP发生特异性反应,而与健康植株汁液无反应。该血清为WYMV的检测及CP功能的研究奠定了基础。     

兴城市花生连作障碍发生原因及防控技术

通过分析花生连作障碍对花生生长发育和土壤的不利影响,阐述花生土传病害发生原因及防控技术,以供参考。     

C两优608水稻在池州市贵池区的种植表现及机插关键技术

阐述了C两优608在池州市贵池区的产量表现、特征特性等,从适期播种、科学施肥、合理灌溉、病虫草害防治等方面总结了其机插关键技术,以促进该品种在当地的推广应用。     

南江黄羊冬季不同饲养方式的效果研究

南江黄羊在大巴山区生态条件下，在120d的冬季中，采取“舍饲”饲养方式，可获得周岁公羊日增重164．50g，只平净增效益31．30元；幼龄（6月龄以下）羊达到平均日增重78．13g，成活率95．24％的生产水平。