共查询到20条相似文献，搜索用时 62 毫秒
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为探明节水抗旱稻品种在节水灌溉条件下的产量优势与生理基础,以新培育的节水抗旱稻品种沪优2号为材料,以高产杂交稻内5优8015为对照,设置2种灌溉模式(常规灌溉与节水灌溉),研究了2种灌溉模式下沪优2号和内5优8015的种植表现。结果表明,在常规灌溉下,供试品种产量无显著性差异,产量均高于9 t/hm~2;与常规灌溉相比,节水灌溉显著降低了对照品种的产量,降幅达到27.4%,而对节水抗旱稻品种产量影响较小。节水抗旱稻品种在节水灌溉下保持较高的产量,主要得益于其具有较强的分蘖能力,较高的分蘖成穗率、每穗粒数和结实率,齐穗期有较大的根系生物量以及较深的根系分布,且复水后有较高的根系氧化力。 相似文献
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节水抗旱稻（Water-saving and drought-resistance rice,WDR）是指既具有水稻高产优质特性,又具有旱稻节水抗旱特性的一种新的栽培稻类型（NY/T 2862-2015）,是在水稻科技进步的基础上,通过进一步整合现代优良水稻与旱稻品种的优良特性而成。节水抗旱稻的节水、抗旱和耐直播能力较强,可采用“旱直播旱管”的绿色栽培模式,可在水田不淹水栽培,大幅度节约灌溉用水,减少面源污染和甲烷排放,也可在旱地或山坡地种植,拓展水稻种植空间。本文简要介绍了节水抗旱稻的概念、特点以及培育与改良策略,表列了团队育成审定的23个节水抗旱稻品种及各自主要特点及适种区域,对节水抗旱稻的产业发展目标进行了讨论。 相似文献
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1990年以来 ,对水稻节水高产栽培技术进行探讨 ,利用负压计测定土壤水势和土壤干量法测定土壤的含水量 ,初步掌握了水稻对水分较为敏感的生育期。既 :有效分蘖期、抽穗前 2 0d、抽穗期、抽穗后 2 0d是水稻对水分较为敏感的时期 ,并且测定各期土壤水势对水稻生长发育的影响 ,以此为指标进行节水栽培技术探讨。同时研究以湿润灌溉、秧苗旱育和旱稻品种利用为中心形成水稻节水高产栽培配套技术 ,结果 ,水稻节水达 30 %以上 ,旱稻用水仅为水稻用水的 5%～ 7% ,具有明显的节水效果 相似文献
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吉林省的旱稻研究及其发展前景 总被引：1，自引：0，他引：1
从历年研究课题和取得的科研成果两方面回顾了吉林省旱稻研究的历史过程;客观地分析了旱稻研究的现状,从承担国家旱稻品种试验到旱稻栽培和新品种选育研究,并介绍了旱稻研究存在的主要问题;种植旱稻是实现节水农业的有效途径之一,研究领域和前景十分广阔。 相似文献
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《Journal of Cereal Science》2007,45(3):236-251
Sorghum is a good source of phenolic compounds with a variety of genetically dependent types and levels including phenolic acids, flavonoids, and condensed tannins. Most sorghums do not contain condensed tannins, but all contain phenolic acids. Pigmented sorghums contain unique anthocyanins that could be potential food colorants. Some sorghums have a prominent pigmented testa that contains condensed tannins composed of flavan-3-ols with variable length. Flavan-3-ols of up to 8–10 units have been separated and quantitatively analyzed. These tannin sorghums are excellent antioxidants, which slow hydrolysis in foods, produce naturally dark-colored products and increase the dietary fiber levels of food products. Sorghums have high concentration of 3-deoxyanthocyanins (i.e. luteolinidin and apigenidin) that give stable pigments at high pH. Pigmented and tannin sorghum varieties have high antioxidant levels that are comparable to fruits and vegetables. Finger millet has tannins in some varieties that contain a red testa. There are limited data on the phenolic compounds in millets; only phenolic acids and flavones have been identified. 相似文献
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Sorghum and millet phenols and antioxidants 总被引：5，自引：2，他引：5
Sorghum is a good source of phenolic compounds with a variety of genetically dependent types and levels including phenolic acids, flavonoids, and condensed tannins. Most sorghums do not contain condensed tannins, but all contain phenolic acids. Pigmented sorghums contain unique anthocyanins that could be potential food colorants. Some sorghums have a prominent pigmented testa that contains condensed tannins composed of flavan-3-ols with variable length. Flavan-3-ols of up to 8–10 units have been separated and quantitatively analyzed. These tannin sorghums are excellent antioxidants, which slow hydrolysis in foods, produce naturally dark-colored products and increase the dietary fiber levels of food products. Sorghums have high concentration of 3-deoxyanthocyanins (i.e. luteolinidin and apigenidin) that give stable pigments at high pH. Pigmented and tannin sorghum varieties have high antioxidant levels that are comparable to fruits and vegetables. Finger millet has tannins in some varieties that contain a red testa. There are limited data on the phenolic compounds in millets; only phenolic acids and flavones have been identified. 相似文献
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概述了海峡两岸农业交流与合作的现状,提出了应该共同呼吁尽快实现两岸“三通”,开放农业生物技术图书期刊资料交流以及开放生物学科方面网络的思路,以便为农业交流与合作的顺畅开展打好基础,并寄希望能够就糖蔗、果蔗以及甘蔗笋等方面的研究与开发到台湾学习取经,开展学术交流或与台湾同行共同开展研究,为我省甘蔗业的发展作出贡献。 相似文献
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Summary Between 1993 and 1998 205 different potato cultivars and 1220 accessions/genotypes of wild and cultivated potato species from
the IPK Genebank Gatersleben were evaluated. Parameters interesting for starch isolation and especially for the use of starch
were determined. Altogether, there was a higher variability in wild potato species than in cultivated potatoes for all characteristics
investigated: dry matter content, starch content, protein content, amylose content and mean particle diameter of starch granules. 相似文献
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ZHU Mingdong WEI Xiangjin XIE Hongjun TANG Guohua ZENG Xiaoshan WANG Jianlong HU Peisong YU Yinghong 《中国水稻科学》2019,33(5):401-406
Seed processing and testing hold the key to the market circulation of seeds, and are an indispensable link in commercial breeding to endow seeds with commodity attributes. The research of seed processing and testing theory and technology is an important link in improving the seed industry chain, realizing large-scale commercial breeding and consolidating the seed industry science of ‘integration of breeding, propagation and promotion’. The scientific and technological system of seed industry in China is being formed and perfected, which is subject to the development level of the industry. The theory and technology of seed processing and testing are relatively weak. We reviewed the development of seed processing and testing theory and technology, and put forward strategies and suggestions to improve the sound development of China’s seed industry. In order to meet the needs of seed industry development and on the basis of high quality breeding of varieties, the new directions and demands of seed processing and testing theory and technology were analyzed. We will work to strengthen the applied research of seed industry, establish advanced seed quality inspection system, improve seed processing equipment suitable for the development needs of modern seed industry, establish standardized production system of seed processing industry, develop the scientific and technological disciplines of seed industry, and promote the sustainable and healthy development of seed industry. 相似文献
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种子加工及检验是种子向市场流通的关键,是商业化育种中赋予种子商品属性不可或缺的环节。种子加工、检验理论与技术的研究是完善种业产业链、实现规模化商业育种、夯实"育繁推一体化"种业科学的重要一环。中国的种业科学技术体系正在形成与完善之中,受制于行业发展水平,种子加工及检验理论与技术相对薄弱。本文回顾了种子加工及检验理论与技术研究发展历程,提出了完善中国种业科学发展的策略与建议。围绕种业发展的需要,在做好品种优质化繁育的基础上,分析种子加工及检验理论与技术的新方向和新需求,加强种业应用性研究,建立先进的种子质量检验体系,研制适合现代种业发展需求的种子加工设备,打造种子加工产业标准化生产体系,完善种业科学技术学科建设,促进种业产业持续健康发展。 相似文献
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种子加工、检验理论与技术现状及思考 总被引：3，自引：0，他引：3
种子加工及检验是种子向市场流通的关键，是商业化育种中赋予种子商品属性不可或缺的环节。种子加工、检验理论与技术的研究是完善种业产业链、实现规模化商业育种、夯实“育繁推一体化”种业科学的重要一环。中国的种业科学技术体系正在形成与完善之中，受制于行业发展水平，种子加工及检验理论与技术相对薄弱。本文回顾了种子加工及检验理论与技术研究发展历程，提出了完善中国种业科学发展的策略与建议。围绕种业发展的需要，在做好品种优质化繁育的基础上，分析种子加工及检验理论与技术的新方向和新需求，加强种业应用性研究，建立先进的种子质量检验体系，研制适合现代种业发展需求的种子加工设备，打造种子加工产业标准化生产体系，完善种业科学技术学科建设，促进种业产业持续健康发展。 相似文献
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In field experiments conducted over 2 years in Mediterranean conditions, five winter and five spring triticales were evaluated for forage and grain production in the same cropping season. The experiments had two treatments, namely harvesting for grain only, and dual-purpose forage and grain production. In the latter treatment, forage was cut when the first node was detectable (Zadoks' stage 31), without removing the apical meristems. Grain was harvested when ripe (Zadoks' stage 92) in both cut and uncut plots.
Environmental conditions affected grain production and protein content more than forage yield and quality. Winter triticales yielded about 43% more forage than spring types, but after forage removal the spring types yielded about 36% more grain than winter triticales.
Reductions in grain yield after clipping were more pronounced in winter (32%) than in spring (19%) types. Forage crude protein content was significantly higher in the spring types studied (24.6%) than in the winter types (23.5%), the opposite being true for fibre content (20.7 and 21.6% respectively). Grain crude protein content did not differ between grain and dual-purpose treatments, but was higher in the spring triticales (12.8%) than in the winter types (11.9%). There was more variability for the measured traits within the winter triticales studied than within the spring types. 相似文献
Environmental conditions affected grain production and protein content more than forage yield and quality. Winter triticales yielded about 43% more forage than spring types, but after forage removal the spring types yielded about 36% more grain than winter triticales.
Reductions in grain yield after clipping were more pronounced in winter (32%) than in spring (19%) types. Forage crude protein content was significantly higher in the spring types studied (24.6%) than in the winter types (23.5%), the opposite being true for fibre content (20.7 and 21.6% respectively). Grain crude protein content did not differ between grain and dual-purpose treatments, but was higher in the spring triticales (12.8%) than in the winter types (11.9%). There was more variability for the measured traits within the winter triticales studied than within the spring types. 相似文献
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近年来，随着大豆播种面积的增长，受病虫危害日趋严重。特别是大豆根潜蝇（又名根明）与根腐病共同发生危害，严重影响大豆的生产。综合防治技术主要手段是三年以上轮作，适时播种及种衣剂拌种等措施。 相似文献