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不同起垄方式栽培对马铃薯产量的影响初探 总被引:1,自引:0,他引:1
通过马铃薯不同起垄方式的栽培试验,研究马铃薯高产栽培技术。结果表明,不同起垄方式栽培对马铃薯产量影响较大,马铃薯费乌瑞它以平播后覆土起垄栽培方式最好,其次是平作出苗后至发棵起垄栽培方式。 相似文献
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研究不同栽培方式对冬作马铃薯生长与产量的影响,探索适合低海拔地区马铃薯冬作栽培的品种类型与栽培方式,为冬作马铃薯高产高效栽培提供科学依据。以费乌瑞它、米拉和威芋5号为试验材料,采用起垄覆黑膜栽培、起垄覆白膜栽培和常规栽培方法,研究不同马铃薯品种类型冬作产量表现和不同栽培方式的保温效果及对植株生长的影响。结果表明,覆膜栽培具有增温效应,其增温效果依次为:起垄覆白膜起垄覆黑膜常规栽培。米拉平均产量最高,为1706.43kg/667m~2,其次是威芋5号,产量为1567.80kg/667m~2,费乌瑞它产量最低,为768.56kg/667m~2。费乌瑞它虫害率最高,达到90%,商品率最低,为55.41%。米拉虫害率为10.57%,商品率为85.24%。威芋5号虫害率最低,为2.33%,商品率为84.94%。覆膜栽培能起到增温保湿、提前出苗的作用;中熟和中晚熟品种产量和商品率高,虫害发生轻,经济效益好。 相似文献
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贵州乌蒙山区菜用马铃薯品种栽培比较试验 总被引:1,自引:0,他引:1
为筛选出可在贵州乌蒙山区推广的生长、产量表现较好的菜用马铃薯品种,以8个菜用马铃薯品种在贵州水城县双戛乡进行栽培比较试验,结果表明:费乌瑞它、中薯3号、郑薯5号和川芋39四个品种表现为早熟,新芋4号表现为晚熟;费乌瑞它、中薯3号、威芋5号在生育期、经济性状、商品外观上综合表现较好,且威芋5号、费乌瑞它小区产量最高(50 kg/18m2),其次是中薯3号(47.3 kg/18 m2),3个品种分别与其余参试品种达显著或极显著性差异,适宜在乌蒙山区进行推广. 相似文献
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垄作是一项能提高马铃薯单产的农艺措施,为探讨单行起垄与双行起垄对马铃薯生长的影响,开展了两种栽培方式的比较研究。结果表明:两种垄方式马铃薯生育期一致,单行起垄的薯块数量、大薯比例高于双行起垄,单行起垄单产2943.18kg/667m2,双行起垄单产2745.26kg/667m2,单行起垄单产比双行起垄单产高7.2%。 相似文献
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为探索在马铃薯起垄覆膜打孔栽培技术条件下,适宜的地膜种类与种植密度,试验设置白色地膜、黑色地膜与反光地膜三种地膜处理与4000株/667m~2、5000株/667m~2、6000株/667m~23个不同密度处理的双因子试验,研究不同种类地膜与不同密度对早熟马铃薯费乌瑞它的产量及性状的影响。试验结果表明:早熟马铃薯品种费乌瑞它不同密度间产量差异显著,在4000~6000株/667m~2均随密度增加而增加;不同种类地膜覆盖存在差异,其中白色地膜与反光膜差异显著;地膜与密度间交互作用不显著;采用反光膜覆盖,密度6000株/667m~2处理产量最高达2087.3kg/667m~2。 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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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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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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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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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