There are four main technical requirements for precision seeding: First, the following species should be refined, one for each hole; second, the depth of the cover soil should be consistent; third, the position of the seeds (ie, front and rear positions) should be accurate; and (4) the seed bed should be narrow. The deviation of seeds in the seed bed is smaller. 1) The precise seeding of the next seed quantity theoretically requires that the seed amount per seed is one seed, but due to the difference in performance and quality of the seeder and the shape of the seeds, this requirement cannot be absolutely achieved, and the country has prescribed a qualified precision seeding. Operating standards are: single-grain rate ≥ 85%, cavitation rate <5%, broken seed rate ≤ 1.5%. 2) The sowing depth should be the same for the seed sowing in the top layer of the soil, that is, the sowing depth or the cover soil depth should be the same, generally 3-4cm, the error can not be greater than 1cm. 3) The distance between the lines should be accurate: the precision spacing should be the same as the plant spacing, the spacing error should be 3cm, and the error amount should be ≤20%. 4) The left and right deviations of the seedlings to be sown in the seed bed should be small. The deviation from the centerline of the seedbed shall be no more than 4cm, and a line after emergence will facilitate field management.
In the United States and Canada, an Electric Blanket is a blanket with an integrated electrical heating device usually placed above the top bed sheet. In the United Kingdom and Commonwealth, electric blanket commonly refers to an electric underblanket (electric mattress pad), which is placed below the bottom bed sheet. Electric blankets usually have a control unit which adjusts the amount of heat the blanket produces. Blankets for larger sized beds often have separate controls for each side of the bed. The electric blanket may be used to pre-heat the bed before use or to keep the occupant warm while in bed.
Some modern "low voltage" electric blankets (such as Car Blanket) have thin carbon fiber wires and work on 12 to 24 volts. These blankets are more comfortable and even safer than ordinary 110/240 volt blankets.
Electric Blanket
Car Electric Blanket, Electric Under Blanket, Electric Over Blanket, Electric Heating Cape
Ningbo Makeheat Electrical Appliance Co., Ltd , http://www.makeheat.net
