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湖南省春大豆规范化栽培技术研究协作组 《作物研究》1989,(1)
我省大豆栽培技术粗放,单产低,增产潜力大,提高栽培技术水平是发展大豆的主攻方向。为此,于1987年由湖南省粮油生产局、湖南省作物研究所及有关地县科研推广单位组成了春大豆规范化栽培技术研究协作组,现将1988年的部分研究结果报告如下。 相似文献
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《大豆科技》2021,(4)
大豆起源于我国,有着悠久的栽培历史。近代以后,大豆的种植才在世界范围内传播开来。然而,仅仅几十年,西方国家利用现代农业科学技术,大大提高了大豆的产量,种植规模不断扩大。面对国外进口大豆日趋激烈的竞争局势及国内大豆产业的种种困境,我国大豆科研工作者不断创新开拓,为中国大豆科学研究和产业发展开创新局。在这些大豆农业科研工作者中,追根溯源,大多数人均传承自一位民国时期的著名大豆专家——王绶。以王绶这位具有奠基作用的人物为中心,从其农业思想、求学历程、科研攻关、教育奠基等方面进行分析,不仅折射出早期艰苦奋斗的农业科学家群体之缩影,也为广大科研工作者树立了一个榜样,更为未来我国大豆科研的发展之路提供可资借鉴的宝贵经验。 相似文献
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中国大豆产业的影响因素、互动机制及竞争战略 总被引:2,自引:0,他引:2
本文根据国内外大豆农业生产、加工业及经贸市场的相关情况 ,对中国大豆产业的发展在影响因素、竞争战略、互动机制方面进行了分析和表述 ,旨在为大豆产业建设提出一些新的问题及新的办法 ,面对世界大豆发展格局 ,建设有中国特色的大豆产业。 相似文献
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南美洲大豆育种现状及展望 总被引:1,自引:0,他引:1
王绍东 《中国油料作物学报》2014,36(4):538
概述南美主产国大豆生产发展沿革。介绍南美大豆育种体制、育种目标、育种程序、种子推广服务体系及品种保护现状,分析其快速发展的原因,展望南美大豆育种未来的发展趋势,提出我国大豆产业发展对策。 相似文献
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本文以《2003年全国农作物主要品种推广情况统计表》为依据,对中国大豆良种推广现状进行了深入剖析,找出了大豆良种推广存在的问题,分析了大豆良种推广的潜力,提出了促进大豆良种推广、发展大豆生产的思路和目标任务,并提出了构建大豆优势产业带、提高我国大豆产业国际竞争力的若干政策建议。 相似文献
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W. L. Porter 《American Journal of Potato Research》1967,44(10):382-382
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Effects of timing and rate of N fertilizer application on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in herbage from perennial ryegrass/white clover pastures were studied at two sites in south-western Victoria, Australia. Nitrogen fertilizer (0, 15, 25, 30, 45 and 60 kg ha–1 ) was applied as urea in mid-April, early May, mid-May, early June and mid-June 1996 to pastures grazed by dairy cows. At Site 1, N fertilizer resulted in a linear increase in P, K, S, Mg and Cl concentrations in herbage and a linear decrease in Ca concentration. For all times of application, concentrations of P, K, Ca, Mg and Cl in herbage increased by 0·0048, 0·08, −0·010, 0·0013 and 0·053 g kg–1 dry matter (DM) per kg N applied respectively. For S concentration, maximum responses occurred in mid-May (0·012 g kg–1 DM per kg N applied). At Site 2, N fertilizer resulted in a linear increase in P, S and Na concentrations in herbage, a linear decrease in Ca concentration and a curvilinear increase in K and Cl concentration. The maximum responses for P, S and K concentrations in herbage occurred for the N application in mid-June and were 0·015, 0·008 and 0·47 g kg–1 DM per kg N applied respectively. For Cl concentration, the maximum response occurred for the N application in early June and was 0·225 g kg–1 DM per kg N applied. Overall, applications of N fertilizer up to 60 kg ha–1 did not alter herbage mineral concentration to levels that might affect pasture growth or animal health. 相似文献
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Krishna Kumari S Thayumanavan B 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,53(1):47-56
Scanning electron microscope (SEM) pictures of small millet starch granules showed more large polygonal and few small spherical or polygonal granules. The granules of small millets resembled those of rice starch granules. The size of the starch granules ranged from 0.8–10 m. The size of the granules was larger in barnyard millet and smaller in proso millet. Several granules showed deep indentation caused by protein bodies. SEM of starch isolated from 24 hour-germinated kodo millet showed pitting or pinholes at some points due to the attack of amylases (preferentially on bigger granules). Brabender viscoamylograph studies on small millet starches revealed that the gelatinization temperatures ranged from 75.8 to 84.9 ° C. Barnyard millet possessed lower amylograph viscosity, minimum breakdown, and relative breakdown values when compared to the other small millets. 相似文献