It is more difficult to produce celery, and it is necessary to choose nursery stocks with high topography, convenient irrigation and drainage, loose soil and fertile sandy loam. To apply the rotted base fertilizer, it is necessary to apply some fertilizer to make the soil loose. In order to achieve quick, full, and uniform emergence, 7 to 8 days before sowing , seed soaking and germination can be carried out. Sowing in the middle and late June , first soak for 12 to 24 hours with cold water and add 12 ~ 14 °C , wash the seeds clean, let the air dry for a while, wait until the surface of the seeds is dry, wrap it with a wet towel, let cool place (15 ~ 20 ℃) visible light germination, washed once with cold water every day. Seeds can be sown before planting, and seeded with new high-fat film before planting (also mixed with seed coating agent or pesticide), can moisturize and heat, repel underground pests, isolate virus infection, enhance germination and swelling function, and improve seeds. Germination rate. The sowing method is mostly carried out by sowing, that is, the bottom water is poured first, and the water is oozing and sand is used for sowing. After sowing, the soil should be thin and uniform, and the nursery should be kept moist. Generally , a small amount of water can be poured in the morning and evening after 1 to 2 days until the seedlings are released, and the new high-fat film is sprayed to effectively prevent the water from wilting and wilting. Resistance to pests and diseases. It is necessary to pour small water to facilitate the emergence of seedlings. Seedlings 2 leaves at a time, seedling distance 1cm . Seedlings films 3-4 minutes once seedlings, seedlings from 8 ~ 10cm square, live vaccine, cultivator to, promoting the differentiation of roots and leaves of the seedlings. When the seedling grows to 5 to 7 pieces, when the seedling height is 15 to 18 cm , it can be planted.   ORP, also known as oxidation-reduction potential, represents the oxidation-reduction ability of water, and the unit is mV. When the ORP sensor reads a negative number, this means that the substance being measured is a reducing agent, and when the reading is positive, it means that it is measuring an oxidizing agent. The reading of ORP will reflect the degree of pollution or disinfection of water, and it is an important indicator of water quality. Although it cannot independently reflect the quality of water, it can reflect the ecological environment of water bodies in combination with other water quality indicators.
Daruifuno online analog ORP sensor has two types of flat platinum and circular platinum, and the measurement range is also different. Customers can choose according to their needs. The simulated ORP electrode is a double-salt bridge design, Ag/Cl reference electrode, and we also have glass material and plastic case packaging models.
Analog Orp Sensor,Water Orp Tester,Water Orp Sensors,Orp Water Tester Probe Suzhou Delfino Environmental Technology Co., Ltd. , https://www.daruifuno.com
If the ORP value is low, it indicates that the content of reducing substances or organic pollutants in the wastewater treatment system is high, the concentration of dissolved oxygen is low, and the reducing environment is dominant.
If the ORP value is high, it indicates that the concentration of organic pollutants in the wastewater is low, the concentration of dissolved oxygen or oxidizing substances is high, and the oxidation environment is dominant.
Main applications for ORP sensors include: Chlorine and Disinfection, Cooling Towers, Swimming Pools, Water Treatment, Poultry Processing, Pulp Bleaching.
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