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<正>1主栽品种选择一般选择优质、高产、抗病,市场受欢迎的甜瓜品种,当前主要有瑞红、久红瑞、金蜜龙、元首、丰雷、碧龙、久青蜜、花蕾等。2栽培季节选择廊坊地区一般都是冬春茬温室和早春大棚栽培。一般温室栽培较大棚栽培早45d。3育苗温室育苗在12月中旬至翌年1月中旬播种,大棚育苗在2月中旬至3月上旬播种,苗龄30~40d。3.1确定播种期早春大棚甜瓜最适宜的苗龄为30d。我地早春大棚甜瓜 相似文献
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近年来,农十师调整农业种植结构,引进日光温室大棚栽培技术,经过2年的试验摸索,总结出一套适于北疆地区的温室大棚黄瓜无土栽培技术。1播前准备1.1品种选择选择早熟、丰产、耐低温、抗病强的津研6号和长春密刺等品种。 相似文献
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本文通过大棚西瓜秋延栽培试验,重点考察了棚栽秋延西瓜播期,整枝,管理以及气温等诸因素对其品质的影响。为秋延西瓜棚栽品种选择及栽培方法摸索新的技术。 相似文献
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利用大棚进行草莓促成栽培 ,在贵阳市可使鲜果在 11月中下旬开始上市直到次年 5月底、6月初采果结束 ,采果期长达 5~ 6个月之久。而且鲜果可在元旦、春节两节前上市。价格好 ,经济效益十分显著 ,在农村产业结构调整中是一项适宜推广的技术 ,通过几年大棚草莓生产实践 ,将大棚草莓促成栽培几项关键技术概括如下 ,以供草莓生产参考。1 品种选择促成栽培的草莓要选择休眠浅、优质、大果的品种。适宜的品种有 :丰香、鬼怒甘、章姬、丽红、宝交早生、全明星等 ,这些品种休眠期短 ,花芽分化早 ,浆果成熟时间早 ,品质优良 ,具有丰产性 ,勘以丰香… 相似文献
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一、选择品种
夏菠菜是7~8月上市的蔬菜。夏菠菜应选择耐热力强,生长迅速,耐抽薹,抗病、产量高和品质好的品种。比较适宜夏季种植的品种有菠杂18、菠杂58、菠杂冠能、绍兴菠菜、广东圆叶菠菜、南京大叶菠菜、华菠1号等。最好在大棚中生产.以便利用遮阳材料进行防雨降温。 相似文献
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中国稻草还田技术研究进展 总被引:5,自引:2,他引:3
随着中国农业的发展,大量稻草被焚烧或者弃置,这不仅浪费了养分资源还造成环境污染。本文综述了稻草还田的方式方法,稻草还田对土壤性状及水稻产量的影响以及稻草还田对水稻氮素吸收和氮肥利用率的影响,以期待稻草还田技术可以进一步推广应用。 相似文献
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中国牧草育种工作研究进展 总被引:4,自引:0,他引:4
在综述中国牧草育种工作进展的同时,分析了牧草育种工作中存在的问题,主要包括育成的牧草品种少,良种推广和覆盖面积较小以及牧草育种理论基础薄弱等,并针对性地提出应从改进牧草育种的方法和途径、培育具有地方特色的独特牧草品种、加强种质资源的保护与利用、加快良种向现实生产力的转化以及通过各部门协作攻关等方面解决这些问题。 相似文献
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兰花试管开花研究进展 总被引:3,自引:1,他引:2
对兰花试管开花方面的研究进行了综述,着重介绍了兰科植物试管开花的影响因素及其调控和分子机理等方面的研究情况,指出目前存在的若干问题并提出解决对策。 相似文献
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Twenty two Uromyces appendiculatus isolates were tested on 20 differential and 25 Ecuadorian Phaseolus vulgaris cultivars in the seedling stage. Based on the infection types 20 races could be discerned. The Ecuadorian cultivars differed
greatly in their reaction to the isolates, from resistant to only one isolate (`Red Small Garden') to resistant to all isolates
(’G2333‘). The isolates showed a wide range of virulence to the Ecuadorian cultivars, from virulent to only two cultivars
(isolate 13) to virulent to 21 cultivars (isolates 5 and 23).
Seven cultivars with a basically susceptible infection type appeared to differ greatly in quantitative resistance when tested
in three consecutive crop cycles. The disease severities in percentage leaf area affected averaged over the three cycles ranged
between 83.9% for ‘Red Small Garden’ and 13.1% for ‘INIAP-414’.
Race-specific resistance does not seem an advisable breeding strategy, but the quantitative resistance offers a good alternative. 相似文献
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低温胁迫是限制植物生长发育和地理分布最主要的环境因子之一,影响植物细胞膜系统、抗氧化系统、光合作用、次生代谢等诸多方面,对农业生产和发展有严重影响。因此,揭示作物在冷胁迫下的生理及分子机制是十分必要的,这有助于培育耐寒作物品种,从而减少生产损失,扩大作物种植面积,具有重要的生产价值和经济效益。目前,基于RNA-seq技术进行植物低温胁迫分子机制深度解析在拟南芥、水稻、油菜、茶树、小麦、烟草、高粱等重要作物上得到了发展应用。本研究综述了近年来植物在低温胁迫或低温适应过程中的转录组学研究现状,以期为高通量测序技术在植物抗性研究方面提供方法借鉴和理论基础。 相似文献
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Toshihiro Saito 《Breeding Science》2016,66(1):46-59
The Japanese pear (Pyrus pyrifolia Nakai) is one of the most widely grown fruit trees in Japan, and it has been used throughout Japan’s history. The commercial production of pears increased rapidly with the successive discoveries of the chance seedling cultivars ‘Chojuro’ and ‘Nijisseiki’ around 1890, and the development of new cultivars has continued since 1915. The late-maturing, leading cultivars ‘Niitaka’ and ‘Shinko’ were released during the initial breeding stage. Furthermore, systematic breeding by the Horticultural Research Station (currently, NARO Institute of Fruit Tree Science, National Agriculture and Food Research Organization (NIFTS)) began in 1935, which mainly aimed to improve fruit quality by focusing on flesh texture and black spot disease resistance. To date, 22 cultivars have been released, including ‘Kosui’, ‘Hosui’, and ‘Akizuki’, which are current leading cultivars from the breeding program. Four induced mutant cultivars induced by gamma irradiation, which exhibit some resistance to black spot disease, were released from the Institute of Radiation Breeding. Among these cultivars, ‘Gold Nijisseiki’ has become a leading cultivar. Moreover, ‘Nansui’ from the Nagano prefectural institute breeding program was released, and it has also become a leading cultivar. Current breeding objectives at NIFTS mainly combine superior fruit quality with traits related to labor and cost reduction, multiple disease resistance, or self-compatibility. Regarding future breeding, marker-assisted selection for each trait, QTL analyses, genome-wide association studies, and genomic selection analyses are currently in progress. 相似文献