The research on pesticide compound preparation is of great significance for prolonging the service life of new pesticide varieties, alleviating the resistance of target organisms, expanding the spectrum of prevention, reducing the cost of prevention, improving drug efficacy and environmental safety.
In order to screen the pesticide synergistic compound formula for controlling the whitebacked planthopper, the researchers of the Institute of Entomology of Guizhou University and the Institute of Plant Protection of Guizhou Province used the rice stem impregnation method to measure 8 pesticide single agents and compounding agents against white back. The virulence of the 3rd instar nymph. The co-toxicity factors were used to screen out the ratio of 16 groups of co-toxic factors greater than 20, and 15 groups were further quantitatively screened by co-toxicity coefficient method, and 5 groups with synergistic effect were obtained, respectively, which were nitenpyram. The ratio of 1:10 to chlorpyrifos and the ratio of imidacloprid to isoprocarb were 7:40, 7:200, 7:400 and 7:1000, respectively; the co-toxicity coefficients were 112.5, 242.1, 212.4, 638.1, 417.7, respectively. Among them, imidacloprid and isoprocarb have the most significant synergistic effect in the ratio of 7:400.
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Aluminium alloy is a type of metal that is widely used in various industries. This alloy is made by combining aluminium with some other metals, such as copper, magnesium, silicon, and zinc, to enhance its properties. The resulting alloy has improved properties than pure aluminum, such as higher strength, corrosion resistance, and good weldability.
One of the main advantages of aluminium alloy is its lightweight. It is about 1/3 the weight of steel, which makes it an ideal material for transportation applications, such as airplanes, cars, and trains. The alloy's high strength also makes it suitable for structural applications, such as in the construction industry.
The corrosion resistance of aluminium alloy is another benefit. Its protective oxide layer prevents rust and other forms of corrosion, making it an ideal material for outdoor applications, such as building facades, roofing, and window frames. The alloy's good thermal conductivity also makes it suitable for heat exchangers and other heat transfer applications.
Aluminum alloy also has a good aesthetic appeal. It can be easily shaped, welded, and fabricated into various shapes and designs. It can also be anodized or painted to provide a decorative finish.
In conclusion, aluminium alloy is a versatile material with many advantages. Its lightweight, strength, corrosion resistance, thermal conductivity, and aesthetic appeal make it an ideal choice for many applications.
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