共查询到20条相似文献,搜索用时 203 毫秒
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<正>设施蔬菜产业不断发展,番茄种植面积也逐步扩大,要想获得种植高效益,苗全苗壮是根本,早春育苗是非常重要的。番茄是日光温室栽培的主要作物之一,深受消费者欢迎。传统的番茄种植病虫害发生较为严重,导致番茄产量下降。穴盘育苗可以解决这一难题,缩短了育苗期限,节约了成本,穴盘育苗技术能极大地促进番茄育苗产业的发展。 相似文献
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Sweetpotato [Ipomoea batatas (L.) Lam. cv. Beniazuma] plug transplants produced from single node leafy cuttings under artificial light in a closed-type growth chamber were planted with roots and substrate of 11- and 15-day old (ca. two to three unfolded leaves with 0.08 m shoot length and three to four unfolded leaves with 0.11 m shoot length, respectively). The plug transplants of both the 11- and 15-day old were planted with one and three nodes depth (ca. 4 and 25 mm deep, respectively) inside the soil ridges (called one- and three-node depth, respectively, hereafter). The conventional vine cuttings (ca. 0.3 m long with seven to eight unfolded leaves) without roots were planted as Control treatment to compare the growth and yield of sweetpotato with each of the treatments of plug transplant. The main objectives of the study were to see the effects of ages of plug transplants and depths of planting for greater growth and yield of sweetpotato in the field. The yield of storage roots 115 days after planting in the field was 33 t ha−1 when using 15-day old plug transplants planted with three-node depth and was 10 t ha−1 greater than that in the Control. The mean storage root length was about 259 mm when using 11-day old plug transplants planted with three-node depth and was 33 mm greater than that in the Control. The mean diameter of storage roots was 70 mm when using 11- and 15-day old plug transplants planted with one-node depth and was 21 mm greater than that in the Control. The plug transplants planted either 11- or 15-day old showed greater overall performances than those of the conventional cuttings. The plug transplants planted with three-node depth showed greater performances than did the plug transplants planted with one-node depth. 相似文献
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创新应用信息技术 促进蔬菜种苗产业发展 总被引:1,自引:1,他引:0
从蔬菜产业发展对穴盘育苗的需求出发,综述了中国育苗技术的研究与发展。通过分析穴盘育苗的技术瓶颈,提出了以信息技术、智能装备和种苗质量管理多目标控制技术为核心的关键技术突破点;阐述了幼苗生长-环境-执行设备的信息获取与解析、精量播种、智能灌溉、温室物流、多点管理和多目标控制的育苗质量管理等关键技术与装备的创新驱动对种苗产业发展的支撑。 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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通过相关性分析和多元回归模型对南菜北运试点扩大前后产销两地间蔬菜市场整合的变化情况进行了研究。研究结果表明,南菜北运试点扩大对主产区-主销区、主销区-主销区间的市场整合影响方向相反,影响程度不同;南菜北运蔬菜生产基地间的蔬菜供给结构有待改善,蔬菜输送品种间存在部分重叠区间;距离因素在很大程度上阻碍了我国南菜北运市场整合的进程。 相似文献
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