以姬秋丽的叶片和茎尖为外植体材料,进行多肉植物组培快繁技术研究.研究结果表明:以茎尖为外植体培养效果最佳,先用75％乙醇处理30s,再用0.1％升汞浸泡12～15min为最佳消毒处理方法;以MS为基本培养基,添加不同浓度6-BA、NAA、KT等植物生长调节剂,适宜诱导姬秋丽愈伤组织及丛生芽的培养基为MS+6-BA 2.0mg/L+NAA 1.0mg/L,效果明显;丛生芽增殖培养基MS+6-BA 2mg/L+KT 1.0mg/L+NAA 0.2mg/L最为适宜;生根培养基以1/2MS+IBA 2.0mg/L为最佳,试验证明最终成苗率可达90％以上,根部粗壮生长状态良好,研究表明姬秋丽组织培养快繁技术体系增殖数高,易成活,质量高.

污染是多肉植物组织培养过程中的常见问题,严重影响了多肉植物的组培成功率.为了提高多肉植物组培苗的成活率,本文对多肉植物组织培养过程中出现的污染及其产生原因进行分析,并提出防止污染使死亡率降至最低的有效方法,为多肉植物组织培养提供技术支持.

The transfer of the contractual right of land has become an important way of improving the efficiency of land use,optimizing the allocation of land resources,and highlighting rights of land development.From the le-gal,institutional,and cultural aspects,the article is about to take a three -dimensional analysis on the barriers to the transfer of the contractual right of land.It puts forward perfecting the fair and efficient laws corresponding the right transfer.It suggests some comprehensive reforms of the household registration and the rural collective property rights systems.Meanwhile,the paper proposes to establish some relative rights transfer markets and nurture some service organizations.It is also suggested that we should remove the social welfare tied to the household registra-tion.Another resolution is to train modern vocational peasants by developing rural vocational education.

Administrative information disclosure is an important principle of administrative procedures, which is the inevitable trend of political democratization,and it is a necessary requirement in the building of socialist rule of law.To protect people's right to know the information,and supervise role of the administrative body acts as the public has been recognized gradually.It is practical significance to analyse the plight and path of administrative information disclosure from economics perspective.

Voting is the cornerstone of modern democratic politics,and it aims at justice.Any substantial right,including the right to vote,should be protected by law.There are some defects in the current voting and lawsuit system of China.On the basis of analyzing the status quo and problems in the voting and lawsuit system of China,this paper puts forward measures to improve them.

行政信赖保护原则在行政执法过程中要切实发挥其功能,关键要看如何适用。树立现代执法理念、严格执法程序、创新执法方式、建立健全失信责任追究机制、强化政府信用工作投诉监督机制等是执法主体,特别是行政机关信赖保护原则适用的现实路径。

适用行政信赖保护原则对行政行为进行司法审查,已为德国、日本和我国台湾地区所广泛采用.目前,该原则在我国的司法实践面临着一些障碍,基于全面规制行政权、树立公众对法律的普遍信仰以及营造诚信政府的必要性,笔者就信赖保护原则司法适用的路径进行了探索.

在行政程序法中确立信赖保护原则是规制行政行为、提高行政效率、塑造诚信政府、保护相对人的合法权益的必然要求。在行政程序中,实现信赖保护原则必须对行政行为进行事先控制,规范行政行为的撤销与废止制度,以及追究行政主体违反该原则的相应责任。

Although the principle of administration trust protection is an important concept in the administrative law,the research on it is relatively backward.It is very controversial about the legal basis for this principle.In this article the author has probed into its legal basis from three aspects: the social contract,the benefit value and the right standard.

The essay analysis the status of trust protection principles in China in order to improve the countermeasures accordingly.