潮汐式灌溉方式(欧美称tidal或ebb and flood)是基于潮水涨落现象设计而命名的一种高效节水灌溉方式。该方式利用了育苗穴盘底部的排水孔,在灌溉时使水位没过排水孔,水分自下面上地被基质自然吸入,既保持了叶面干燥,又可防止淋洗式灌溉导致的肥水流失,适用于各类盆器及穴盘栽培植物的种植管理。微环境恒温育苗床通过潮汐式底部补水方式,使根基环境自然达到相宜的含水量,地暖使用发热均匀的电镀膜取代传统电热线作为恒温热源,电热膜的热点转换率要高于点热心,且为面状加热,膜上各点发热量均相同。
穴盘育苗作为一种现代化的无土栽培方式育苗技术体系,具备一次性成苗,病虫害发生率低,种苗品质高度可控以及可大规模工业化生产等优势特点,该技术体系集成了育苗穴盘,玻璃温室,钢架育苗床,自动播种与特种灌溉设备等栽培设施,是目前世界上主流的植物种苗生产方式。然而多数生产者为了降低生产成本,在实际应用种往往将育苗穴盘排放在大田中的简易土床内,使用传统的人工顶端喷淋法补水,冬季通过铺设电加温线及搭建小拱棚进行加温保温。
穴盘育苗技术在此等“减配”条件下运动具有诸多弊端,1:在台风多雨季节,育苗场地极易受洪涝积水影响,2:土壤具有一定导热性,冬季育苗时,热量易通过底部土壤流失,使得加温能耗较高,3:顶端喷淋式的补水方式灌溉均匀度较差,肥水浪费大,4:由顶端喷淋式灌溉造成的页面表面湿度较高,极易滋生各种病害,是引发各种苗期病害的重要原因,此外,育苗过程中遇到较低气温时,需对幼苗生长环境惊醒加温保温。潮汐苗床是一种能源利用率高,病害发生率低的的催芽培育一体化微环境恒温育苗床,通过搭建育苗床面保温小拱棚,压缩育苗棚内保温的三维空间,,使维持育苗环境温度所消耗的能量最低。河北省衡水市华耀农业设施工程有限公司潮汐式灌溉移动苗床栽培床是一种床面为塑料结构的栽培床,其床面采用塑料制作的潮汐式苗盘,它又称底部灌溉式栽培床.
Features and advantages of ebb-and flood ben ches
1.Ebb-adn flood roling benches is a kind of mature irrigation tecfnoloy and is widely used in developed countries.It sovied the "solid phase,liquid phses and gaseous phase composition"of the media.Ebb-and-flood rolling benches is a is on hte stage of developing in our country.
2.Water saving,high efficiency and competely closed circulatory system make the utilization rate reaches90%.
3.The plants grow faster,It is 1day ahead of traditional seeding method for age of seeding per week ,which can enhance the facility utilization rate.
4.It can protect the leaf from water film in surface,therefore the leaf can get more
light to have photosynthesis, which can promote the transpiration pull and the root
can absorb more nutrients.
5.Stable media moisture content to avoid the root capillary from iry death because of reaching the con tain er bottom or edge
6.Easy to control the relative humidity to keep the fungus because it is dry under the using of chemicals.
7.Noweeds under the benches to reduce the fungus because it is dry under the benches
8.Low management cost.No matter hand orerating or with help of microcomputer contorol management,a person can finish the irrigation of 0.2 to 0.5 ha flat benches in 20 to 30 minutes
9.It can be used any time and not limited by bariety,specification and time.
10.The normal sprinkling irrigation can not distribute the fertilizer and water equally and lead to the yield declining .However,the ebb-and-flood irritation can make sure the yield 100%, the production reaching standard,every plants with same height and high quality.