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促进“菜篮子”工程发展方式转变 保证大城市蔬菜市场稳定供应 总被引:1,自引:0,他引:1
随着我国城市化进程的快速推进,城市农产品保障供给特别是生鲜农产品的稳定供给已经成为维系城市正常运行的重大问题,如何稳定以蔬菜为主的生鲜农产品的均衡供应值得大家深思。面对城市发展的新形势和新要求,需进一步转变"菜篮子"工程发展方式,完善市郊蔬菜生产,加强流通体系建设,提升质量安全水平,促进蔬菜科技进步,健全社会化服务,以保障城市蔬菜市场的稳定供应,满足城乡居民生活水平日益提高的需要。 相似文献
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无论是自然灾害还是突发疫情,都对我国农产品的应急保障能力提出了巨大的考验。只有进一步加强农产品生产灾害预警、增强产销对接能力,才能尽可能降低突发事件给产业链上下游带来的经济损失,保障人民的粮食安全。市场流通是蔬菜产业链的关键环节,如何实现北京市蔬菜供应货源的充足性、可持续性及市场价格的相对稳定性,对于首都"菜篮子"稳产保供建设具有重要的意义。 相似文献
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"菜篮子"产品价格基本稳定既有利于经济社会稳定,又有利于调动农民的生产积极性。浙江省平湖市在加强"菜篮子"工程建设的基础上,研究蔬菜产品在生产、流通、消费和市场调控等方面存在的问题,并提出建立稳定蔬菜生产流通、稳定菜价的长效机制。 相似文献
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我国蔬菜产业发展现状及对策措施 总被引:3,自引:0,他引:3
正我国蔬菜产业发展成效显著,但"四个难度不断加大":提高产品质量难度、稳定市场价格难度、促进绿色发展难度、保障市场供应难度。未来主要目标任务是做到"一稳定四提高":一是稳定生产面积,二是提高均衡供应能力,三是提高质量效益,四是提高绿色发展能力。蔬菜是事关民生的重要农产品。近年来,各级农业部门紧紧围绕推进农业供给侧结构性改革这一主线,加快培育发展新动能,全力促进蔬菜生产稳定发展、保障市场均衡供应,为丰富"菜篮子"供应、 相似文献
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疫情防控是一场阻击战,也是一场总体战,各项工作都要为赢得这场严峻斗争提供支持,农产品尤其是蔬菜更是人民生活的必需品,全力以赴做好蔬菜生产供应保障工作更显重要,农业农村部连发通知,重点强调抓好冬春蔬菜生产,加大生产力度,千方百计增加产量,配合有关部门保障蔬菜顺畅供应,保持市场充足供应和价格稳定,为“菜篮子”产品流通和农产品生产创造必要的便利条件,确保“菜篮子”产品产得出、运得走、供得上,为打赢疫情防控阻击战提供坚实的物质保障。 相似文献
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为更好地保障疫情等突发情况下蔬菜的稳定供应和生产,对应急状态下蔬菜供应模式面临的问题进行了深入分析,并对如何完善突发情况下蔬菜供应模式进行了研究,提出了应急状态下蔬菜应急供应保障体系建立的思路和方法,即:通过增加储备蔬菜品种、完善种植基地布局保障市场蔬菜供应;通过监控配送物流,构建安全配送体系;通过加快保鲜技术研究,建立质量保障体系;通过创新产品研发及标准化生产,满足多样化需求;通过产地直销供应、加工配送模式、搭建蔬菜调配平台等方式,完善调配体系,实现了"菜篮子"的保价格、保质量、保供应,产生了良好的经济、社会与生态效益。 相似文献
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The effects of combinations of salinity (no salt, 2000 p.p.m. or 4000 p.p.m. of CaCl2 and NaCl, 1:1) and water table (30 cm, 60 cm or 90 cm from the soil surface), on the vegetative growth and tolerance of ‘Golden Japanese’ plum and ‘Mit Ghamre’ and ‘Balady’ peaches were studied. The plants were grown in lysimeters. The growth of the trunk, total shoot length, the increase in shoot length per cm and the fresh weight of top, root and total plant were reduced with increasing salinity of the irrigation water. The effect was accentuated when the plants were maintained at high water table level. The salinity treatments resulted in the death of 43%, 73% and 76% of the plants in the plum, and the ‘Mit Ghamre’ and ‘Balady’ peaches, respectively, indicating that the plum is more tolerant to salinity than the peach. The plants of the salinity treatments showed various symptoms of salt injury, such as leaf burn, defoliation, shoot die-back and finally death. In the peaches, salt injury started to occur in the first growing-season, whereas the salt injury appeared in the plum in the second growing-season. The symptoms were more pronounced in the 4000 p.p.m. treatment than in the 2000 p.p.m. treatment and were more pronounced at the high water table level. The salinity level was the predominant factor and the effect of the water table on the vegetative growth diminished with increase in the salinity level of the irrigation water. 相似文献
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AIM:To establish a fast, accurate and economical technique for culturing mouse pulmonary arteriolar smooth muscle cells (PASMCs), and to explore the effects of hypoxia on the proliferation and apoptosis of the PASMCs. METHODS:In sterile condition, the pulmonary artery was isolated from the male BALB/c mice by digesting with collagenase I, and the cells were cultured in fetal bovine serum-coated flask. Centrifugal procedure was not used during the cell passage. The cell morphology was observed under an inverted phase-contrast microscope. α-Smooth muscle actin was identified by immunocytochemistry and immunofluorescence. The effects of hypoxia on the proliferation and apoptosis of the PASMCs were detected by CCK-8 assay and TUNEL assay. RESULTS:PASMCs were identified by the methods of immunocytochemistry, immunofluorescence staining and observation of morphology. Unlike the rat PASMCs with typical subcultured peak-vally pattern, the mouse PASMCs showed a lot different without a peak-vally pattern. The cells could be subcultured after 5 d to 7 d and there was 3 to 5 generations depending on the activity of the cells. CCK-8 assay demonstrated that the A values of PASMCs exposed to hypoxia increased after 24 h (P<0.05) as compared with normoxia. TUNEL result showed that the apoptotic index of the PASMCs in hypoxia decreased after 24 h (P<0.05). CONCLUSION:This technique for obtaining cultured mouse PASMCs is simple, fast, accurate and economical. The digestion time is easy to control. Hypoxia promotes the proliferation and inhibits the apoptosis of PASMCs. 相似文献
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小檗碱和壳聚糖抗蔬菜病原真菌活性测定及复合膜制备 总被引:2,自引:0,他引:2
研究了小檗碱和壳聚糖对几种常见蔬菜病原真菌的抑制活性,以及以小檗碱和壳聚糖为主料制备复合膜的方法,并测定了该膜的药物释放效果。试验表明:低浓度(0.234 mg/mL)小檗碱即可抑制辣椒炭疽病菌(Vermicularia capsici)等5种蔬菜病原真菌的生长。20 mg/mL浓度壳聚糖对番茄灰霉病菌(Botrytis cinerea)的抑制率高达65%,而对其余4种果蔬病原真菌也有一定的抑制作用。为了集成这2种天然化合物的优点,制备了小檗碱-壳聚糖复合膜,该膜具有缓释功能,在模拟外部环境(磷酸缓冲液,pH 6.8)条件下,20 d小檗碱累计释放率接近25%,提示其在果蔬贮藏抗菌中的应用价值。 相似文献
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Fresh onion seeds desiccated to 6.0% seed moisture content (SMC) were stored in various packaging materials under different storage conditions. Seeds packed in aluminum-laminated pouches beside those stored with silica gel at 25 °C maintained satisfactory germinability and vigour after 12 months. Desiccated seeds stored in moisture impervious containers produced more vigourous seedlings. Germination potential of onion seeds increased with reduced SMC besides storage in moisture impervious packets along with desiccants as physiological and biochemical attributes are regulated. Seed viability and vigour decreased with accelerated ageing due to increased lipid peroxidation, decreased activities of several free radical and peroxide scavenging enzymes. Electrical conductance of seed leachates also increased with ageing. Thus, adoption of appropriate storage temperature and moisture control techniques would significantly affect onion seed quality, which was due to minimum accumulation of free peroxide radicals and enhanced activity of free radical scavenging enzymes. 相似文献
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以大荔县冬枣种植区采集的发病枣果为试材,采用常规组织分离法进行病原菌的分离纯化,通过柯赫氏证病法则、形态学观察及分子生物学分析,研究鉴定了冬枣黑斑病和炭疽病的病原菌种类,并采用田间调查法对2种病害为害特征进行比较分析,以期为田间有效区分冬枣黑斑病和炭疽病为害症状,并快速判断其病原类型,及进一步深入开展精准防控提供参考和指导.结果表明:陕西大荔冬枣黑斑病的病原菌为细极链格孢(Alternaria tenuissima),炭疽病的病原菌为胶孢炭疽菌(Colletotrichum gloeosporioides).2种病害均主要为害枣果实,在枣果果腰或果肩上形成黑褐色病斑,可能同时存在且症状相近极易混淆,但在病斑表面、皮下及久置表型3个方面存在明显区别. 相似文献
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钾肥在小白菜和萝卜上的施用效果 总被引:6,自引:0,他引:6
采用盆栽试验方法研究了施用钾肥对小白菜、萝卜生长发育、产量、品质及钾素含量的影响。结果表明 ,施用钾肥对小白菜和水萝卜的株高、叶片数无显著的影响 ,但可提高水萝卜块根的产量 ,提高幅度为 31.0 4 %~ 97.93%。施用钾肥可提高小白菜和萝卜的蛋白质和VC含量 ,降低硝酸盐含量 ,增加植株的钾素含量 相似文献