共查询到20条相似文献,搜索用时 203 毫秒
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以树状月季“粉扇”和“绯扇”为试材,采用盆栽控水方法,利用叶绿素荧光成像仪、便携式光合仪和茎流仪对干旱处理的盆栽树状月季“绯扇”和“粉扇”的光合特性、叶绿素荧光和茎流进行测定,研究了持续的干旱胁迫对2种树状月季光合效率的影响,初步分析2种树状月季对干旱胁迫的具体生理反应行为和抗旱性强弱,以期为培育抗旱树状月季和干旱条件下树状月季的水分管理提供参考依据。结果表明:在干旱胁迫下,树状月季“粉扇”和“绯扇”对持续的干旱均表现出相似的生理反应行为,但是“粉扇”对干旱的抗性要强于“绯扇”,说明在应答干旱胁迫时“粉扇”可以通过相对更高的茎流速率来保持水分的供应以提高光合效率,在今后对2种树状月季供水管理时,应该加强“绯扇”的水分供应。 相似文献
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月季被称为"花中皇后",属于蔷薇科植物,在我国栽培历史达两千年.月季花期一般在6~7个月,并且品种繁多,可以丰富园林树种多样性,调整园林内种植结构,所以在公园、风景区中利用广泛.树状月季也被称为玫瑰树、月季树,是通过扦插、嫁接、修剪等园艺手段培育出的新型月季,在江苏、河南等地最为盛行.近年来,苏州地区继续加强树状月季栽... 相似文献
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《Scientia Horticulturae》2005,106(1):129-134
Locust bean gum (LBG) is a natural hydrocolloid extracted from the seeds of carob tree (Ceratonia siliqua L.). This work describes the successful use of LBG as a gelling agent in combination with agar for shoot multiplication and rooting of carob tree and Iberian rose shoots. Its presence did not affect the multiplication rate of both species. The rooting frequency of carob shoots was even significantly increased in the presence of 5 g of LBG plus 4 g of agar to the medium compared to medium solidified with 9 g of agar. Iberian rose shoots rooting was not influenced by the addition of this gum to the rooting medium. Results obtained show that LBG can be used in combination with agar in culture medium as a gelling agent without negative effect on plant material and with the advantage of reduced medium costs. 相似文献
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In order to meet comprehensive planting goals, tree-planting campaigns must plant on private properties, in residential front and backyards. Successful engagement in these kinds of neighborhood plantings requires an understanding of residents' decision making. Through surveys with past recipients of free 1″-caliper trees, past neighborhood leaders of tree-planting recruiting, and door-to-door canvassing in a pilot neighborhood, this study shows the top factors for accepting free trees and main reasons for declining. Surveys asked past tree recipients their main motivations for accepting a free tree, and three reasons rose to the top: trees provide beauty, trees help the environment, and trees keep people healthy. Top barriers for declining a free tree included not desiring more trees than they had, concerns about maintenance, and a language barrier. These results can inform tree-planting campaigns and tree-focused organizations in order to improve messaging and neighborhood engagement – all to ensure that more trees are planted and canopy is increased. 相似文献
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阳光玫瑰引种于淮南试栽,采用单干双蔓避雨栽培,栽植第2年每666.7m^2产量500kg,第3年1500kg,结果枝率85%,坐果率较高。果穗圆锥形,平均单穗重600g以上,单粒重8~14g,果实8月中下旬成熟,黄绿色,玫瑰香味较浓,香甜可口,成熟果树上挂果达2个月。抗霜霉病和炭疽病性强于巨峰,偶感灰霉病,幼果易发生日烧危害。总结了避雨栽培技术以供参考。 相似文献
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切花月季不同嫁接方法育苗对比试验 总被引:2,自引:0,他引:2
为培育抗性强、产量高、品质优良的切花月季品种,在银川地区首次采用嫁接方法开展切花月季的繁育试验,对不同月季品种、不同嫁接部位对嫁接成活率的影响进行了初步研究.结果表明:月季品种是影响月季嫁接成活率的关键因子,相同条件下不同的月季品种嫁接在同一砧木上的成活率差异较大,选用不同的嫁接方法,嫁接成活率也有所不同,此外,嫁接部位对接穗成活率及新枝的生长速度影响很大. 相似文献