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辽宁省农垦局承担了农垦农产品质量追溯系统建设项目,经过3 a的运行,制定了《辽宁省农垦局农产品质量追溯工作制度》,建立了项目管理组织和项目管理制度,完善了省级监管平台,规范了追溯系统,产品实现了可追溯,培育了品牌,增强了市场竞争力。 相似文献
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实地氮肥管理对稻米品质的影响 总被引:4,自引:2,他引:2
在大田试验条件下,观察了实地氮肥管理对水稻产量和稻米品质的影响。与农民习惯施肥法相比,实地氮肥管理在水稻产量持平或略有提高的情况下明显降低了施氮量。实地氮肥管理提高了稻米的加工品质,降低了垩白米率、垩白面积和垩白度,提高了稻米的透明度,改善了外观品质;实地氮肥管理还明显降低了直链淀粉含量,提高了胶稠度,降低了糊化温度和蛋白质含量。此外,实地氮肥管理明显提高了米粉的最高黏度、崩解值,降低了消减值,改善了稻米的食味品质。农户示范也取得了类似的结果。对实地氮肥管理改善稻米品质的原因进行了讨论。 相似文献
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2014年盘锦水稻创历史高产,其主要原因是特殊的高温、多光、低湿的气象条件,激发了品种的生产潜力,提高了氮肥利用率,进而提高了收获穗数和穗粒数指标,降低了发病率,最终实现了高产。 相似文献
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为了实现甘蔗种植的丰产增收,广西省崇左市大新县大力推广甘蔗种植的机械化技术的推广,解决了当地甘蔗种植劳动力不足的难题,降低了甘蔗种植、科学管理与收获过程中的人工成本,提高了生产效益,实现了高产高质的目的 .文章介绍了甘蔗种植机械化技术中存在的一些问题,并提出了加强推广效果的具体措施. 相似文献
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锌肥对花生生理特性、产量及品质的影响 总被引:1,自引:0,他引:1
在大田试验条件下研究了锌肥对花生生理特性及产量品质的影响。结果表明,施用锌肥促进了花生的营养生长,增加了干物质积累量;提高了叶片叶绿素含量和净光合速率,增加了叶片过氧化物酶(POD)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性,降低了丙二醛(MDA)含量。施锌提高了花生产量,增加了籽仁脂肪和蛋白质的含量。其中施锌量为30kg/hm2时,花生产量最高,增产幅度达7.52%,其增产原因是增加了单株结果数,提高了果重。 相似文献
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文章分四个时期阐述了建国40年来我国甜菜科研工作进展状况,介绍了取得的主要成就;①明确了甜菜自然栽培区和集中产区;②搜集整理了甜菜品种资源,选育出若干新品种;③建立了三级良种繁育制度,实现了良种化;④总结丰产经验,推广了先进栽培技术;⑤摸清了主要病虫害发生及流行规律,提出了防治措施;③开展了基础理论及生物技术的研究,并取得了可喜成绩。 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