The yam, also known as yam, belongs to the family Dioscorea. It is a perennial grassy vine and is eaten with a tuber root or tuber root. It contains a variety of vitamins and choline, and has a high nutritional value. For cultivation of yam, sandy soil with fertile soil, deep soil, strong water retention and fertility, good ventilation, and convenient drainage and irrigation must be turned 35 to 45 cm deep. When deep-turning the land, the top soil layer of 20 to 30 cm above should be used first. Turn aside and continue to deepen to 35-45 centimeters. Never avoid turning the soil. After the land has been turned deeply, a cultivation ditch has been formed and the basal fertilizer can be applied to the cultivation ditch. Basal fertilizer generally applies 20 kg of superphosphate, 3,000 kg of decomposed organic fertilizer and 200-300 kg of plant ash. When fertilizing, the bottom of the planting ditch can be filled with the topsoil that has been turned upside down, with a thickness of 15 cm. Then, the basal fertilizer is applied on the soil layer, and finally the soil is covered with 15 cm. The top dressing of yam is mainly in the middle and late stages of growth, with less need for fertilizer in the early stage. After the emergence of yam, a 20% human fecal urine fertilizer is applied after the seedlings are applied neatly, and then applied once every 20-30 days. Fertilization can dig a 6-10 cm deep fertilization ditch at a distance of 30 cm from the plant, and 700-1000 kilograms of human excrement. When underground tubers enter a vigorous growth period, topdressing should be repeated. Mu 20-30 kg of compound fertilizer and 40-60 kg of cake fertilizer are applied or applied in the trenches, and the soil is covered after fertilization to ensure sufficient nutrients for tuber elongation and expansion. Later, depending on the growth of the plant, it is determined whether or not top dressing. Excerpted from China Agricultural Press>
Lighting Adapter
T8-T5 Adapter System, Which replaces T8 /T10/ T12 fluorescent tubes with mechanical ballast, 40% to 45% power savings + More Environmentally friendly Components = green lighting, . Advanced technology, and perfect performance, warm start, PF>0.99, THD<10%, wide voltage(150-270V), no flicker or hum. And reliable quality and Long Life, ballast three years and tube 10000 hours Complies with CE use for offices, supermarkets, schools, hospitals etc.
Lighting Adapter
Lighting Adapter, T8-T5 Adapter System
Ningbo Sunfine UV lighting Co.,ltd. , http://www.uvlightings.com