大地园林化是按照综合规划对国土进行绿化美化的全面宏伟设想。绿化是大地园林化的基础，大地园林化是绿化的发展和提高。著者认为“城市大园林”的产生，是与大地园林化及其重点组成部分城市园林化一脉相通，而系其必然的发展。对于园林化中的生态建设与文态建设，文中着重予以剖析。对园林化中发扬民主，发展生产，调动群众积极性等，文中特加强调。文末还对实现城市大园林的有关问题，予以讨论。

梅花（Prunus mume Sieb.et Zucc.）是我国原产的著名花木，已有二千年以上的栽培历史。通过有关文献资料的整理分析以及实地的调查研究，本文着重对梅之原产地及梅花栽培历史作一初步探计。著者认为梅之原产地系以川、鄂山区为中心，梅花的栽培亦由四川开始，大致分五个时期，不断向三面扩展，逐渐增加品种并提高栽培水平和规模，文章讨论了梅花品种的演化，文学艺术与梅花栽培以及引种驯化等问题。

根据1943年以来在我国主要梅花产区进行品种胡查记载的结果，并与梅花品种的历史发展过程相核对，作者认为应在梅花品种分类中，主要根据进化的观点，同时也须结合园林栽培应用上的需要。这是梅花品种分类的基本原则，也可在其他花卉的品种分类研究中结合具体情况推广应用。在进行梅花品种分类时，作者根据上述原则，用枝条姿态作为梅花品种分类的第一般标准，花型作为第二极标准，再参照其他各级标准，初步提出了中国梅花品种分类系统的建议，并将业已记载、整理的231个梅花品种分列归入此系统中。

The florist's chrysanthemuml Dendranthema morifolium/Rarest./Tzvel., is a world known flceer, yet-the-problem of its origin has not been solved.-After a brief survey of the history of the flolriet's chrysanthemum in China, as well as concise descriptions of the probable parental wild species, the author laid stress on introducing preliminary achieve-ments in artificial creation of a new species-D. pekinense/Chen and Liang.1963, Chen and Liang 1964; Chen et el. 1981; Chen et al 1982/, being a tetraplold/2n=36/with intermediate characteristics between its maternal parent D. indicum var. acutum and paternal D. erubescens but with white, light pink, light yellow and. yellow semi double flower heads. 3 Peking Daisy cultivars/D. peki-nense/were obtained during 1962-1963, and 10 more cvs./also I plant each/in 1979-1980, all from F seedlings of D. indicum vat. acutumx1 D. erubescens, among many other offsprings of different speelflc hybrids. Beginning from autumn of 1981. artificial cross polllnations were made mostly between D. zawads-kii and indicum slong the slopes of Huang Shah/Yellow Mountain/, Anhui Province with alt. 1450-1680m. The mother plants were potted and transplanted to Beijing, and seeds/achenes in reeality/to be harvested on them during the winter in cool greenhouse. 19 hybrid plants from D. zawadskii X D. in-dicum show intermediate stem and leaf characteri-stics. F1 plants in bloom during the coming autumn will probably'throw new light on solving the origin problem. Further investigation projects, includin6 cross combinations with D. vestitumas one of the hybridization parents, also including some cytological observations with chromosomes of the parental wild species as well as those of the F1 hybrids are suggested.