共查询到18条相似文献,搜索用时 319 毫秒
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黄岩地区几个常栽荸荠品种的比较试验 总被引:2,自引:0,他引:2
对桂林荸荠、安徽荸荠、本地荸荠3个荸荠品种的植物学性状、商品性、品质、产量、产值进行对比。试验结果表明,安徽荸荠与本地荸荠在植物学特性方面具高度相似性,但安徽荸荠经济性状方面较优;桂林荸荠肉质细嫩,化渣爽口,是优质的水果型品种,而安徽荸荠产量高、球茎大、糖度高、耐贮运,农户应根据当地市场的消费需求与习惯,合理安排种植品种和种植比例。 相似文献
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<正>荸荠[Eleocharis dulcis(Eleocharis tuberosa)]又名马蹄,产品器官主要为球茎。在《水生蔬菜答农民问》(61、62)中,介绍了荸荠的传统药用[1,2]、鲜食与加工利用等相关内容[3~5]。本文主要介绍荸荠完整球茎(未去皮、芽完好、无破损、无腐烂等)贮藏保鲜方法。1荸荠贮藏保鲜的主要目的生产上,荸荠球茎贮藏保鲜的目的主要有3个。其一是用于留种。要求球茎保持高活力至翌年播种育苗季节,其中春夏季播种育苗时期一般为3~4月,夏季播种育苗时期为6~7月。对于春季播种育苗用球茎,通常留田贮藏即可满足要求; 相似文献
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荸荠俗称马蹄 ,我县种植面积在 3333hm2 左右 ,其产值约占荔浦县种植业的四分之一。荸荠杆枯病是影响荸荠生长的主要原因。为了减轻杆枯病的为害 ,减少损失 ,1 993年以来 ,我站在青山镇对荸荠杆枯病的发生为害情况进行了调查 ,并作了防治试验与综合示范试验 ,取得了较好的效果。1 病原及症状荸荠杆枯病俗称“荸荠瘟”。其病原是荸荠柱盘孢(CylindrosporiumeleochidisLentz)引起 ,属半知菌亚门真菌。该病在我县主要为害叶鞘、茎叶。叶鞘染病 ,基部初现暗绿色不规则水渍状斑 ,后扩展到整个叶鞘 ,病部干燥后… 相似文献
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荸荠秆枯病及其药剂防治技术 总被引:1,自引:0,他引:1
荸荠是我区主要水生蔬菜之一,一般立秋前移栽,前茬为早稻,属“晚水荸荠”。70年代末以来,荸荠秆枯病(Cylindrospo-rium eleochoridis Lentz)危害不断加重,1985年调查全区因此病损失产值180多万元。为摸清该病的发生危害情况,探索有效药剂及其使用技术,笔者于1985~1988年进行了调查与试验,现总结如下: 一、发生及危害 (一)病害症状:病菌主要为害茎秆,可产生三种不同症状.(1)普通型,是田间常见的典型病斑。初生浅褐色或暗绿色小点,扩大后成梭形。梭形病斑长度0. 3~3. 0厘米,平均为1. 49厘米;颜色为枯黄色,中间灰褐色。病斑扩大后可相互合… 相似文献
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The Relation in the Apple Between the Development of Young Shoots and the Thickening of Older Stems.
R. C. Knight 《The Journal of Horticultural Science and Biotechnology》2013,88(1):72-77
SummaryAs a crop new to the western world, opportunities for production of Chinese water chestnut have barely been exploited. In China, over the latitude range 21º to 34ºN it is planted in spring and harvested in autumn. Opportunitiesexist to extend its cultivation to new climates, where growth throughout the year is not constrained by low temperature, but may be constrained by photoperiod. To study the response of Chinese water chestnut to photoperiod, six experiments wereconducted intropical central Queensland. One set focussed on planting early in spring, with long-day treatments superimposed. Anotherset investigated autumn and winter plantings, also with superimposed long-days, and the third compared the performance ofChinese water chestnut under constant or decreasing photoperiods, ranging from 8.h to 20.h, in light-out chambers. Corm formation was strongly retarded by long days but promoted by the photoperiods which were shorter than a criticalmaximum. Thecritical photoperiod was between 12.0±12.5.h, below which corm formation was rapid, and above which it was non-existent, or minimal if combined with cool (<21º mean) temperature. Under short days, to the detriment of stem growth, significantly more dry matter was allocated to corms and rhizomes. The latter provided potential corm sites. The response of corm formation and rhizome production to photoperiods shorter than the critical was more pronounced the moreextended the treatment period. The data provide evidence for the ability to manipulate timing of harvest at the field scale to extend availability of fresh produce on the market. 相似文献
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SummaryChinese water chestnut is a crop new to Australia. To establish a reputable industry, the influence of both genotype and environment on yield and quality need to be evaluated. To that end, the genetic relationships of cultivated Chinese water chestnut in Australia were investigated using random amplified polymorphic DNA (RAPD) analysis. Initial problems with inhibition of RAPD reactions were solved by precipitation of polysaccharides with 1 M NaCl and the subsequent addition of 0.4.mg ml-1 bovine serum albumin (BSA) in RAPD reactions. Nearly all DNA extracts from then onwards were RAPD-amplifiable. Ninety-six RAPD markers generated by 14 primers separated the samples from Taiwan (cv. Shu-Lin), Hangzhou of mainland China (cv. Da Hong Pao), New South Wales of Australia (unknown cv.) and the USA (unknown cv.) from the remainder of the samples from Australia. These remaining samples were too closely related to be differentiated. The dissimilarity observed between these remaining samples (0.78–4.4%) may be due more to scoring errors of undetectable bands and sampling error rather than to real genetic variation. It is therefore suggested that the observed morphological and physiological variations in Chinese water chestnuts produced in Australia (e.g. corm sweetness) are phenotypic and reflect the differences of environment and cultivation rather than genetic diversity. 相似文献
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简述了荸荠生产中种质资源收集、分类、对比、抗性鉴定;繁殖、育苗、水肥管理、脱毒技术;轮作、间套模式;主要病虫害及管理措施。介绍了当前荸荠采收、去皮等前处理新技术及设备,传统产品加工以及近年来荸荠皮的功能物质研究、综合利用的一些新进展.并对今后产业发展提出了期望。 相似文献
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板栗红蜘蛛是唐山市板栗生产上的主要害虫.根据板栗红蜘蛛发生消长规律,采用烟雾机喷雾施药,研究了聚乙烯醇、刹死倍和3种杀螨剂对红蜘蛛越冬卵和发生期螨的防治效果.结果表明:对越冬卵的防效聚乙烯醇40倍液+5度石硫合剂在栗树休眠期可达86.53%;刹死倍200倍液在栗树芽萌动期达77.9%;尼索朗对发生期螨的防效达80.6%,均可在板栗产区推广应用. 相似文献
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荔浦县荸荠组培苗产业化的形成有力推动了当地荸荠产业的健康发展,回顾了荔浦县荸荠组培苗产业化的形成及发展过程,对荔浦县荸荠组培苗产业化发展进行了可行性分析,并对产业化的效益进行了分析。 相似文献