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高油大豆铁豆67号配套栽培技术研究 总被引:2,自引:0,他引:2
对影响铁豆67号产量的密度、施肥量、叶面喷肥、化控次数4因素分别设定3个水平的处理,采用正交表L9进行数据分析处理,结果表明,影响大豆新品种铁豆67号产量因素的顺序是:施肥量、密度、叶面喷肥、化控次数;铁豆67号最理想的栽培技术模式是密度1.1万株/667m2,施肥量为20kg/667m2,叶面喷肥1次,化控次数1次。产量与施肥量呈正相关。密度高于1.1万株/667m2时,产量与密度呈负相关;密度低于1.1万株/667m2时,产量与密度呈正相关。产量与叶面喷肥次数、化控次数呈正相关,极差R值分别为8.91和6.17,但并不显著,说明适时适量的叶面喷肥次数和化控次数对铁豆67号的产量有积极的调节作用,但不能起到决定作用。 相似文献
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以小米辣“义选2号”为研究材料,通过研究氮磷钾施肥量对其产量影响,总结小米辣“义选2号”高产栽培关键技术.试验采用3因素4水平二次回归最优设计,建立相应的数学模型.结果表明:氮磷钾施肥量分别为18.66~20.19kg/667m2,8.41~9.78kg/667m2,18.40~19.08kg/667m2时,效益最大,可达4515.01~4731.31元/667m2. 相似文献
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以粳稻新品种岫粳16号为试验材料,以800kg/667m2为产量目标,设1.4万~3.2万丛/667m2共7个处理研究其适宜栽培密度.结果表明:不同处理对岫粳16号产量影响较大,产量随栽培密度的增加先增后减,其中2.0万丛/667m2(处理3)、2.3万丛/667m2(处理4)达到了产量目标.栽培密度的大小对岫粳16号产量、构成产量的主要因素及主要农艺性状均有不同程度的影响,其中有效穗、生物产量、经济系数、穗总粒、穗实粒、基本苗、最高茎蘖数、全生育期与栽培密度关系密切,且呈现规律性变化,其余的因素变化不大,且无规律. 相似文献
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为了筛选出适宜淄博地区种植的绿豆品种,以中绿5号等15个绿豆品种为材料,分析了不同绿豆品种农艺性状和抗逆性状的差异,以及不同农艺性状与产量的相关性。结果表明:冀绿7号、冀绿9号、潍绿7号和中绿5号产量较高,绿丰3号和晋绿豆6号的产量较低;株高和主茎节数与产量呈极显著负相关,分枝数与产量呈显著负相关,单株结荚数与产量呈显著正相关;冀绿7号、冀绿9号和潍绿7号的抗倒性、抗旱性和抗病性均较好。综上所述,冀绿7号、冀绿9号和潍绿7号适合在本地种植,且产量相对较高。 相似文献
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研究采用二因素随机区组实验设计方法,以酒用高粱"茅梁1号"为试验材料,进行田间栽培试验,来探索种植密度和施肥量对其产量及其相关性状的影响。结果表明,不同处理条件下的高粱单株产量和单产分别在29.67~46.67 g、261.80~519.70 kg/667m~2。种植密度对单株产量、群体产量和穗长都具有重要影响,单株产量随着密度的增大而减小,群体产量却显著提高;当种植密度为10000株/667m~2时与对照处理相比的增产效果最为明显,在57.20%~68.17%之间,当种植密度10000株/667 m~2、施肥量30kg/667 m~2时单产最高,但是对千粒重影响不显著。施肥对高粱单株产量、群体产量、穗长和千粒重的影响均不显著。 相似文献
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介绍了运用冷冻干燥技术进行速溶蛋花汤的加工,研究了生产工艺、特点以及影响产品质量的主要因素。试验表明,采用冷冻干燥技术加工的速溶蛋花汤,具有营养丰富、风味独特、方便快捷等特点。 相似文献
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DENG Zhao-jing 《保鲜与加工》2005,(1):153-156
A new definition of inertia,i.e. the momentum is the measuring of inertia of matter, is proposed. The article through and etc., subjects, the correctness of the new notion of inertia:The monentum is the measuring of inertia has been demonstrated, and the unsolved contradictions of the traditional definition of inetia. And the mass is the measuring of inertia has been revealed. 相似文献
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香蕉是热带亚热带发展中国家重要的粮食作物和碳水化合物来源。但近年来,香蕉生产受到严重的病虫危害。大多数香蕉栽培品种是三倍体,生长周期长,而且不孕。由于没有种子,给繁殖和育种带来一定的困难。遗传转化技术的发展为香蕉品种的改良提供了一种有效的手段。香蕉的遗传转化方法有电激法、基因枪法、农杆菌介导法等。农杆菌介导法的应用是香蕉品种改良的一个重大突破。香蕉遗传转化的外植体也发展到多种,有原生质体,胚性细胞悬浮系,分生组织,以及横切薄片等。近几年,随着分子生物学的发展,出现了转化效率更高,重复性更好的香蕉遗传转化技术。如农杆菌和基因枪结合法,离心辅助农杆菌介导法、真空渗透技术等。这些新技术新方法的出现,必将推动香蕉产业高速发展。 相似文献
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基于RS与GIS技术,利用景观生态学理论及景观格局指数对布尔津县土地利用现状进行定量分析。结果显示为:(1)布尔津县以草地、林地为主要景观类型,镶嵌着耕地、水域等景观类型。(2)四个分区(即高山区、丘陵区、平原区、荒漠区)的林地资源组成差异明显,耕地、居民、交通及工矿用地集中分布在丘陵区和平原区(3)从各项指数来看,高山区的多样性指数较低;平原区是受人文因素最多的区域,景观优势度低,各种土地利用类型比例差异不大,有利于生态可持续发展,但要合理的开发利用;荒漠区生态环境相对脆弱,要加强生态环境的保护与改善。通过该研究对布尔津县的土地利用现状作一个了解,为该县乃至整个地区的景观规划和可持续发展战略提供科学依据。 相似文献
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Based on the relation between the incipient yield pressure and the limit of yielding in cylinder according to the elastic disabled rule, a laboratorial method of determining limit of yielding of material is designed and a set of experimental data were gained by the method. The incipient yield pressure of the cylinder is gained by analyzing the experimental data, and then the limit of yielding is gained. The laboratorial method has a good reliability as the experimental value has a little error to the theory value. It has a definite engineering signification and theory value to research the mechanical capability of material and the disabled rule of high pressure vessel. 相似文献
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南瓜降糖功能及其系列食品加工技术 总被引:3,自引:0,他引:3
阐述了南瓜在糖尿病辅助治疗方面的功能特性,介绍了南瓜降糖主要制品南瓜全粉、南瓜脆片、南瓜果酱和南瓜肉汁的工艺流程和操作要点。 相似文献
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母猪繁殖障碍成因分析 总被引:3,自引:0,他引:3
繁殖障碍是导致母猪淘汰的最主要因素,直接造成母猪非生产天数延长,繁殖猪群生产效率降低,严重影响猪场的经济效益。本文作者对引起母猪繁殖障碍的多方面因素,包括营养因素(如饲养水平、饲料品质、断奶日龄)、环境因素(如温度、湿度、通风、光照)、疫病因素、生产技术及管理因素进行了详细阐述。 相似文献
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Efficiency of water use of early plantings of sunflower 总被引:4,自引:0,他引:4
M. Auxiliadora Soriano Francisco Orgaz Francisco J. Villalobos Elías Fereres 《European Journal of Agronomy》2004,21(4):465-476
Rain fed crop production in Mediterranean environments depends to a large extent on strategies that avoid the intense summer drought. Early plantings of sunflower have given consistently higher yields in such environments, but the basis for such yield increases has not been explored. We conducted two field experiments at Cordoba (Spain) to investigate the effects of an early and a late planting date on the components of water-limited crop productivity; namely, water use (T), water use efficiency (TE) and harvest index (HI) of sunflower. The results were generalized by simulating rain fed sunflower yields, under early (1 January) and late (15 March) plantings, for a 25-year period with the aid of a simulation model of the Ceres type (OILCROP-SUN) which has been validated in Cordoba. Experimental seed yields of early plantings in 1989 and 1996 were 2.0 and 3.0 t ha−1, while late plantings yields were 1.3 and 2.4 t ha−1, for the 2 years. Average simulated yields were 2.7 ± 1.1 and 1.9 ± 0.7 t ha−1 for early and late plantings, respectively. For the 2 years, T of early plantings was higher than that of late plantings, but the response of TE and HI to planting date was not the same in the two experiments. In the simulation exercise, T and TE of early plantings were consistently higher than those of late plantings, while there were no differences in the HI for the two planting dates. We conclude that early plantings of sunflower increase rain fed yields by increasing both T and TE, while the impact of planting date on HI very much depends on the crop water stress pattern, which is quite variable from year to year even in the predictable Mediterranean environment. 相似文献