Excerpted from China Agricultural Press>
Cold cathode glow discharge the positive ion bombardment high purity metal cathode produce secondary electron maintain discharge, cathode current is mainly composed of positive ions contribution, current is lesser, cathode is cold, hence the name "cold cathode";
The lifetime of the cold cathode Quartz UV Lamp is 12000hrs. it is very long.
We have U type,O shape,and also can customs for our client.
Cold Cathode UV Lamp have strong germical effience in 253.7 wavelength,especial for the nuclei acid albumen,it could let the bacteria aberrance or dead.
so this uv lamp suitable use in medical,sanitation,germ study,grocery and pharmacy fields etc.,also use some disinfector,and air purify.
Cold Cathode Quartz UV Lamp Cold Cathode Quartz UV Lamp, Cold Cathode UV Lamp, Quartz UV Lamp Ningbo Sunfine UV lighting Co.,ltd. , http://www.uvlightings.com
Cold Cathode Quartz UV Lamp
Sweet potato potassium application four methods
Sweet potato is a good potassium crop, which absorbs nitrogen, phosphorus and potassium in the soil in a ratio of 2:1:3. The appropriate amount of potassium can extend the functional period of sweet potato leaves, so that the sweet potato can obtain high yield. Potassium application of sweet potato generally takes four methods. 1. Immerse the vinegar in 1 kg of potassium sulfate dissolved in 30 kg of water, stir well, then cut the soaked potato vines with 2 knots, and remove them after drying for 1 hour, which can promote the early growth of sweet potato seedlings. 2. Apply basal fertilizer in combination with soil preparation, mix 200 kg of plant ash with 4000 kg of decomposed organic fertilizer, and mix it into the soil. 3. For 40 days after the top-dressing yam planted, 10 kilos of potassium sulphate are opened at a distance of 10 cm from the yams, and the soil after application will promote the formation and expansion of roots; when the vine grows to 1 metre long, Choose morning without wind and dew, and use 50 kg of plant ash to directly spray on the leaf surface to prevent stems and leaves from growing. 4. Spraying 50 days before the harvest of sweet potato, spraying with 1% potassium sulfate solution, 5% ash leaching solution, and 0.2% potassium dihydrogen phosphate solution. Spraying 45-60 kilograms in general, spraying once every 5 days, and even spraying 3 times.