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Eight misunderstandings in the use of drip irrigation systems. I don't know that these drip irr
Eight misunderstandings in the use of drip irrigation systems. I don't know that these drip irr
  • Release date:2022-01-15
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Error 1: unreasonable irrigation system, drip irrigation flow is low, and users often can't see the irrigation process. If the irrigation time is too long, there will be deep leakage waste; If the irrigation time is too short, the root system will suffer from water stress. Understanding the irrigation intensity, plant water demand and soil field capacity of the irrigation system can better irrigate according to the needs of plants. At the same time, it should be borne in mind that the irrigation period and amount should be adjusted according to the climate and different growth stages of plants, and the same irrigation system cannot always be used.

Error 2: the wrong dripper is adopted. The dripper is usually divided into two types: pressure compensated dripper and non pressure compensated dripper. Pressure compensation is more expensive, but the effect is better. First of all, the pressure compensation dripper can ensure that the water output of each dripper is uniform and the fertilization and irrigation are uniform. Secondly, some pressure compensated drippers can wash out the sundries blocking the dripper, and some pressure compensated drippers have large flow channels, which reduces the possibility of dripper blocking.

Error 3: lack of filtration equipment. Many users mistakenly believe that well water does not need filtration. In fact, well water often contains coarse sand, fine sand and some chemicals to block the dripper. Common filters include screen filter, laminated filter and sand filter. If there is sand in the water, centrifugal filter should be used. Before installing the filtration system, analyze the physical and chemical composition of the water quality, adopt appropriate filtration facilities according to the water quality, and select the dripper with anti blocking performance.

Error 4: there is no fertilization through the drip irrigation system. The simultaneous application of water and fertilizer is the biggest advantage of drip irrigation. The growth of plant roots is water and fertilizer oriented, and the application efficiency of fertilizer with irrigation water is the highest. However, when using the fertilization and irrigation system, there should be a device to prevent fertilizer backirrigation, so as to prevent fertilizer from polluting groundwater and other water sources.

Error 5: lack of routine maintenance drip irrigation system needs careful maintenance to achieve optimal performance. Units with conditions shall often flush drip irrigation pipes to ensure smooth water flow of equipment. According to actual needs, periodic combined use of effective chemical treatment can be considered.

Error 6: without pressure gauge and flow meter, these simple devices can help users "feel the pulse" of the irrigation system, so as to solve the problem of drip irrigation system that can not be accurately judged by the naked eye. Use a pressure gauge to detect the pressure at the head, middle and tail of the drip irrigation capillary, and compare the historical situation of the design pressure or water pressure to judge the problems of the drip irrigation system. The flowmeter can help users quickly judge the flow of water source. In addition, the flow data is helpful to calculate the actual flow and the historical flow of irrigation system.

Error 7: mistakenly believe that all pipes are of the same quality. Different drip irrigation pipes have different raw material quality, production process and patented technology. More importantly, the dripper structure design of different brands of pipes is different. Drip irrigation pipes that can provide uniform water and fertilizer, have anti blocking performance, long service life and are easy to install and maintain should be selected.

Error 8: ignoring the long-term operation cost, the drip irrigation system often needs to be used for more than ten or 20 years to irrigate millions of cubic meters of water and fertilizer, so it is very important to consider the uniformity of irrigation, the operation cost of pump station and daily maintenance cost. A well-designed system in the early stage can reduce the later operation cost through its good uniformity or energy saving. In addition, some suppliers have a lot of experience and know-how, which can guide users to select the correct irrigation system and provide help in the operation and maintenance of the system.


错误1:不合理的灌溉制度 滴灌流量低,使用者常常会看不到灌水过程,如果灌溉时间太长,则有会产生深层渗漏浪费;如果灌溉时间太短,根系又将发生水分胁迫。了解灌溉系统的灌水强度、植物需水量和土壤田间持水量,就能更好地根据植物需要进行灌溉。同时要铭记,灌溉周期和灌溉量要根据气候和植物的不同生长阶段而调整,不能始终采用同一灌溉制度。
  错误2:采用错误的滴头 滴头通常分为两种型号,压力补偿式滴头和非压力补偿式。压力补偿式虽然贵一些,但效果更好。首先,压力补偿滴头可确保每一个滴头出水均匀,施肥灌溉均一。其次,部分压力补偿式滴头可将堵塞滴头的杂物洗出,还有一些压力补偿式滴头流道很大,减少了滴头堵塞的可能性。
  错误3:缺少过滤设备 许多使用者错误的认为井水不需要过滤,而事实上井水经常含有粗砂、细砂和一些化学物质,堵塞滴头。常见的过滤器有网式过滤器、叠片过滤器和砂石过滤器,如果水中有砂则宜采用离心过滤器。在开始安装过滤系统前,要对水质的物理和化学组成进行分析,根据水质采用合适的过滤设施,并且选择具有抗堵塞性能的滴头。
  错误4:没有通过滴灌系统进行施肥 水肥同步施入是滴灌的最大优点。植物根系生长具有向水、向肥性,肥料随灌溉水施用效率最高。但使用施肥灌溉系统要有防止肥料倒灌装置,以防肥料污染地下水和其他水源。
  错误5:缺乏日常维护 滴灌系统需要通过精心维护以发挥最优性能。有条件的单位应经常冲洗滴灌管,保证设备水流的畅通。根据实际需要,可以考虑周期性配合使用有效的化学处理。
  错误6:没有压力表和流量表 这些简单的设备可以帮助使用者给灌溉系统“把脉”,以解决凭肉眼无法准确判断的滴灌系统问题。用压力表检测滴灌管首部、中部和滴灌毛管尾部的压力情况,对比设计压力或水压的历史情况,可以判断滴灌系统的问题。流量计可以帮助使用者快速判断水源的流量,另外,流量数据有助于计算实际流量和灌溉系统的历史流量情况。
  错误7:误认为所有的管品质一样 不同的滴灌管有不同的原材料品质、生产工艺和专利技术,更重要的是不同品牌管子的滴头结构设计是不同的。应该选择可以提供均匀水肥,具备抗阻塞性能,寿命长,易于安装和维护的滴灌管。
错误8:忽视长期运行费用 滴灌系统往往要使用十几年或20年以上,灌溉数百万立方的水肥,所以考虑灌溉的均匀度、泵站的运行费用以及日常维护费用非常重要。一个前期设计良好的系统,可通过其良好的均匀度或节能性降低后期运行成本。另外,一些供应商有很多经验和专有技术,可以指导使用者选用正确的灌溉系统,并在运行和维护系统方面提供帮助。

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