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该研究以改善生态环境为目标,围绕城市园林绿化、营造竹林景观,在安吉竹种园、上海东方绿舟、北京房山高科技园区、临安观赏竹园开展试验研究,并在浙江、上海、北京不同区域运用此项技术进行推广试验,在试验过程中,总结了观赏竹园艺栽培技术:(1)城市园林观赏竹栽培技术;(2)观赏竹盆景栽培及制作.城市园林观赏竹栽培技术包括采取堆土筑丘、改土、设置隔离层等方法创造适宜竹子生长的土壤环境,并采取搭建水平井字架,块状拉索等措施进行固竹防风,采取了全秆通梢密植法开展竹子园艺栽培,解决不同区域立地条件栽植竹子,快速形成竹林景观的技术问题,研究摸索出了一套全梢竹子挖掘、运输、整枝修剪、栽植和养护技术措施,实现竹类园艺栽培技术创新;观赏竹盆景栽培及制作包括盆景栽培、盆景养护、盆景配置等. 相似文献
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彩叶植物的观赏价值及应用前景探讨 总被引:12,自引:0,他引:12
文章在阐述彩叶植物具有极高观赏价值的基础上,概括了彩叶植物在园林中的应用形式,并指出彩叶植物具有广阔的市场发展前景。 相似文献
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观赏植物辐射诱变育种研究进展 总被引:11,自引:0,他引:11
本文论述了国内外观赏植物辐射诱变育种研究进展,详细阐明我国近年在诱变源、辐射诱变机理、辐射效应、诱变材料、辐射剂量与变异率的关系等方面研究概况。最后,提出了今后辐射育种研究的主要方向。 相似文献
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Prior to marketing, ornamental tropical fish are currently sorted, graded and counted manually; a process that is labor intensive, stressful to fish and inaccurate. Manipulation of fish movements at our will is a key element in the development of a device for automatically sorting, grading and counting fish by a computer vision system, and the present study is one step towards the development of such a fish-friendly sorting device. The positive phototactic and rheotactic innate responses of guppies (Poecilia reticulata) were exploited to induce them to swim through transparent pipes or narrow channels, to render them ready for inspection by a computer vision system. Water flow direction and velocity, water level, and illumination were effective in inducing fish to move from one container into the other via a narrow transparent pipe. It was attempted to separate guppies moving in groups into individually spaced fish, by introducing an obstacle into a narrow channel or narrowing the transparent pipe. 相似文献
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The meiotic behavior of three tall fescue (Festuca arundinacea, 2n = 6x = 42) genotypes, giant fescue (F. gigantea, 2n = 6x = 42), and their reciprocal F1 hybrids and C1, amphiploids was evaluated to determine the parental genomic relationships. Isozyme banding patterns were used to confirm the parental identity of the hybrids and amphiploids. At meta-phase I, the parents had predominantly bivalent pairing. The hybrids had an average of 9.51 I, 16.02 II, 0.12 III, 0.02 IV, and the amphiploids had 2.17 I, 38.82 II, 0.60 III, 0.58 IV, 0.01 V—VIII. The prevalence of bivalent pairing in both hybrids and amphiploids suggested a homoeologous relationship between the six genomes, with four of the six being more closely related. Bivalent pairing in the amphiploids indicated genetic regulation of chromosome pairing. Zymograms were obtained for acid phosphatase (ACPH), alcohol dehydrogenase (ADH), glutamate oxaloacetate transaminase (GOT), malate dehydrogenase (MDH), 6-phosphogluconate dehydrogenase (6-PGD) and phosphoglucoisomerase (PGI). The three tall fescue and giant fescue parents had different zymograms for ACPH, MDH, 6-PGD and PGI; thus, the tall fescue parents of the hybrids and amphiploids could be determined based on the banding patterns of these four enzymes. Phenotypes were determined for ACPH-1, PGI-2 and 6-PGD-1. ACPH-1 may be used to follow the introgression of giant fescue chromatin into a certain tall fescue genotype. 相似文献