The method of preventing and controlling the damage of Aphis gossypii: Linfen Fertilizer Network
The rotation of water and drought, and crop rotation with rice and other crops can effectively eliminate the residues of golden worms in the soil. Before the planting of Ophiopogon japonica, the soil was deepened and planted with a targeted insecticide and a new high-fat film to uniformly stir the fine soil and sprinkle it in the planting ditch, which can effectively inhibit the damage of the golden worm. Linyi Fertilizer Network Copyright
During the growth of Ophiopogon japonicus, weeding should be timely weeded to reduce weeds. The depth of loose soil should be about 3 cm, which promotes soil loosening and good development of Ophiopogon japonicus. It is often irrigated at the peak of the activity of the golden worm, which can effectively inhibit the damage to the wheat winter. Or set up insecticidal lamps in the field during the adult period of the golden worm to lure. Linyi Fertilizer Network Copyright
After the wheat winter harvest, the soil is turned over in time, and the wintering golden worms in the soil are turned to the soil surface to be frozen or eaten by natural enemies, effectively reducing the damage of the golden worm. Linyi Fertilizer Network Copyright
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 gas fuel cell is to provide the energy source for the gas actuated tools.

The first fuel cells were invented by Sir William Grove in 1838. The first commercial use of fuel cells came more than a century later following the invention of the hydrogen–oxygen fuel cell by Francis Thomas Bacon in 1932. The alkaline fuel cell, also known as the Bacon fuel cell after its inventor, has been used in NASA space programs since the mid-1960s to generate power for satellites and space capsules. Since then, fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are also used to power fuel cell vehicles, including forklifts, automobiles, buses, boats, motorcycles and submarines.

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