1) Bt powder, green worm, and acaricidal bacillus in biological preparations are a kind of commonly used bacterial pesticides, and their insecticidal action is related to the quantity and activity of bacteria. In other words, the best control effect can be achieved only under the appropriate temperature, humidity and light conditions. It requires a suitable temperature of 20 to 30 ° C, the humidity needs to be larger, and it is required to avoid direct sunlight. It is best to apply it in the morning or evening when there is dew or on a cloudy day. It is worth noting that the mixing of such pesticides with fungicides will greatly reduce their activity.
2 There are many pesticide varieties that are stable in acidic and neutral media, but are easily decomposed in the presence of alkali. Such pesticides include cytotoxic, anti-virus cockroach, mancozeb, keering, chlorhexidine, carbendazim, jinggangmycin, rotenone, chlorpyrifos, phoxim and pyrethroids. Therefore, such pesticides cannot be mixed with alkaline pesticides such as ketone, Bordeaux, sulfur suspension or stone sulphur, otherwise the efficacy will be reduced.
3 î€ can be killed, copper cream, copper sulphate, copper oxychloride and other copper preparations are a more common type of pesticide. However, there are many pesticides such as methyl thiophanate, carbendazim, dexamethasone, mancozeb, benomyl, and thiram. They cannot be mixed with copper preparations. If mixed, it will reduce the efficacy. half.
4 î€ Some pesticide varieties such as dixon, phoxim, rotenone, see light easily decomposed. Therefore, you should try to choose cloudy days, or use it sooner or later. For example, the use of phoxim spray is only valid for 3 to 5 days, but it can be applied to the ground to control underground pests. The validity period can be as long as 1 month.
5 î€ melons and beans are sensitive crops. Dichlorvos, ethyl phosphine bromide, diclosan, phoxim, insecticides, and dysentery should be used with caution on melon crops; dichlorvos should be used with caution in legumes. , trichlorfon, insecticide double, disease and other diseases. Melon bean crops are highly susceptible to phytotoxicity with the above pesticides, and it is best to replace them with other pesticides.
2 There are many pesticide varieties that are stable in acidic and neutral media, but are easily decomposed in the presence of alkali. Such pesticides include cytotoxic, anti-virus cockroach, mancozeb, keering, chlorhexidine, carbendazim, jinggangmycin, rotenone, chlorpyrifos, phoxim and pyrethroids. Therefore, such pesticides cannot be mixed with alkaline pesticides such as ketone, Bordeaux, sulfur suspension or stone sulphur, otherwise the efficacy will be reduced.
3 î€ can be killed, copper cream, copper sulphate, copper oxychloride and other copper preparations are a more common type of pesticide. However, there are many pesticides such as methyl thiophanate, carbendazim, dexamethasone, mancozeb, benomyl, and thiram. They cannot be mixed with copper preparations. If mixed, it will reduce the efficacy. half.
4 î€ Some pesticide varieties such as dixon, phoxim, rotenone, see light easily decomposed. Therefore, you should try to choose cloudy days, or use it sooner or later. For example, the use of phoxim spray is only valid for 3 to 5 days, but it can be applied to the ground to control underground pests. The validity period can be as long as 1 month.
5 î€ melons and beans are sensitive crops. Dichlorvos, ethyl phosphine bromide, diclosan, phoxim, insecticides, and dysentery should be used with caution on melon crops; dichlorvos should be used with caution in legumes. , trichlorfon, insecticide double, disease and other diseases. Melon bean crops are highly susceptible to phytotoxicity with the above pesticides, and it is best to replace them with other pesticides.
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Vibrating ruler or surface finishing screed is a commonly used tool in construction machinery, mainly used to remove air from concrete in construction, scrape the concrete floor, and increase the density and viscosity of concrete. Vibratory rulers are used in a wide range of applications. The vibrating ruler, also known as the walk-behind vibrating ruler, can be divided into gasoline vibrating ruler and electric vibrating ruler according to power. Generally, a vibration ruler of about 2 meters is used the most.
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