共查询到20条相似文献,搜索用时 78 毫秒
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辽宁省桓仁满族自治县是生产冰葡萄酿、制冰葡萄酒的适宜地带。传统冰葡萄栽培采用小棚架,果实离体自然冷冻方式,植株埋土防寒越冬。桓仁产区研发的冰葡萄连体自然冷冻V形叶幕栽培模式采取一穴栽植2株葡萄,每年进行结果株和预备结果株的轮换长短枝修剪和结果,枝蔓埋土防寒,果实与植株连体越冬至元旦时节采收,之后沿防寒土表面剪截结果株。实现了与国际冰葡萄连体自然冷冻一致的技术标准。冰葡萄糖度高,品质均一,酿制的冰葡萄酒质优,植株管理方便。 相似文献
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叶幕厚度对“赤霞珠”葡萄叶幕微气候、光合特性及果实品质的影响 总被引:1,自引:0,他引:1
机械修剪以其高效高质的优势逐渐受到国内外葡萄种植业青睐。为探究机械修剪对葡萄叶幕微气候、光合特性及果实品质的影响,以4年生"赤霞珠"品种为试材,叶幕厚度分别设置为70cm(不抹副梢)、85cm(抹副梢)、85cm(不抹副梢)、100cm(不抹副梢),并于生长期调查了葡萄叶面积,测定光照强度、光合指标及浆果品质,采用单因素方差分析(ANOVA)进行数据分析。结果表明:叶幕厚度对叶幕微气候无显著影响,但随叶幕增厚,果际周围温度略降、湿度略升、光照强度减弱;葡萄转色期,70cm(不抹副梢)叶幕光合速率较85cm(抹副梢)显著提高12.9%,85cm与100cm处理差异不大;70cm(不抹副梢)、85cm(抹副梢)处理能在提高产量的同时促使葡萄提前成熟,增加果实含糖量、pH及总花色素含量,100cm处理能提高总酚、单宁及总酸含量。总体来讲,山西晋中地区的"赤霞珠"葡萄叶幕厚度应选择70cm。 相似文献
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一种更好的葡萄架型——“V”形架 总被引:2,自引:0,他引:2
葡萄是一种藤本植物,不能独立生长,无论栽培什么品种都必须人工搭架,而且由于其生长旺、副梢多、白花授粉易结果,故无论搭什么样的架,只要稍加管理,每年总会有一定收获。因此,从古至今,国内国外,葡萄的架型千姿百态,无奇不有。 相似文献
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无核寒香蜜葡萄属欧美种,1998年引入山东肥城。其果穗大,圆锥形,平均穗重600g,最大1300g;果皮粉红色,果粒圆形,着生紧密,平均粒重6.8g,大粒达13g, 相似文献
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金峰葡萄系欧美杂交种,属藤稔葡萄芽变,晚熟品种。果穗极大,平均穗重550g,最大穗重超过2300g。平均粒重18.5g。果皮深紫黑色。肉质硬,可溶性固形物含量19.5%,酸味很少,风味甘甜,有芬香,不裂果,耐贮运,品质优。 相似文献
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E. M. Nederhoff R. De Graaf 《The Journal of Horticultural Science and Biotechnology》2013,88(6):925-937
The effects of carbon dioxide (CO2) on stomatal opening and canopy transpiration were investigated in cucumber (Cucumis sativus L., cv. Jessica) and tomato (Lycopersicon esculentum Mill., cv. Calypso). Stomatal opening (i.e. leaf conductance, g) was measured with a porometer, and canopy transpiration rate (E) with weighing lysimeters on intact plants in large greenhouses. Regression analysis was applied to account for the effects of radiation, air humidity, leaf temperature and CO2 on g. The effect of CO2 on E, which is primarily through g and secondarily through adjusted air humidity, was investigated by combining the regression equation for g with the Penman-Monteith equation for E. The relative effect of CO2, as calculated with the fitted regression equations, was a decrease of about 4% in g for cucumber and of about 3% for tomato, per 100 μol mol-1 increase in CO2, in the range of about 300 to 1200 μmol mol?1 CO2. The effect of CO2 on E was smaller than on g and the extent of the effect depended on the conditions, mainly ventilation rate. The ratio K (relative change in calculated E divided by relative change in calculated g) was estimated at less than 0.2, except at low radiation. In reality, K will be even lower, because feedback mechanisms enforce the reduction in g and counteract the reduction in E. So the reduction of the transpiration rate of greenhouse cucumber and tomato caused by moderate CO2 enrichment is small and mostly negligible, except under low light conditions. 相似文献