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Stone sulphur mixture is a high-efficiency, low-toxic insecticidal, bactericidal and acaricidal agent commonly used in orchards. The orchard sulphur mixture in the early spring can have a multiplier effect on the prevention and control of pests and diseases throughout the year. However, due to the specific operating procedures in the production, the quality of the obtained mother liquor is greatly different, which affects the application effect to varying degrees.
First, the choice of raw materials: the quicklime used in the sulphur stone sulphur mixture requires white color, light weight, no impurities, the finer the sulphur powder, the better, and then prepare some neutral detergent. The ratio of quicklime, sulfur powder and water is 1:1.7:11, and the amount of washing powder is 0.2%-0.3% of water consumption.
Second, the tanning method: When tanning, add the right amount of water in the pot and heat it with a large fire. Weigh the sulfur powder, quicklime and washing powder in proportion. When the water temperature is 40 ° C ~ 50 ° C, the sulfur powder is poured into the pot, the washing powder is added and stirred. When the water temperature is between 80 ° C and 90 ° C, the quicklime is slowly placed in the pot, and the mixture is quickly stirred while the fire is turned down. Once you find the overflow pot, pour a small amount of cold water. Start the recording after the pot (about 13 minutes), and pay attention to observe the color change of the liquid in the pot, and grasp the best heat. When the liquid is brick red, it means that the fire is not enough; when the liquid turns black and green, it means that the fire is big, the effect will be reduced; when the liquid is changed from brick red to reddish brown, it should be stopped immediately. After the ceasefire, the liquid can continue to react with its own residual heat, and the liquid quickly turns into a scented color, which can be cooled.
Third, note: (a) utensils should pay attention to. Do not cook or hold mother liquor in copper or aluminum pans. (2) Pay attention to the ratio of raw materials and the feeding procedure. After the raw materials are placed in the pot, they should be boiled by fire and at the same time pay attention to the color change of the liquid. (3) During the tanning process, a small amount of mother droplets can be dropped into the clear water, and the mother liquor is quickly dispersed to indicate that the fire is almost the same, and the pan can be discharged after further measurement with a Baume hydrometer. If you sink as below, you need to squat again. (4) When using, the water may be sprayed according to the weight multiplication method or the density multiple method according to different tree species, time and concentration requirements, so as to avoid unnecessary phytotoxicity. In the early spring, the orchard advocates spraying 1 or 2 times of high-concentration stone sulphur mixture. In other seasons, the concentration is too high. (5) Avoid using it for a long time. It is best to use the prepared stone sulphur mixture once, and it can not be used for a long time, otherwise it will reduce the efficacy. The mother liquor should be isolated from oxygen, and a layer of kerosene or diesel oil can be added to the mother liquor to prevent oxidation.
Huaxian County Liu Xiuling
First, the choice of raw materials: the quicklime used in the sulphur stone sulphur mixture requires white color, light weight, no impurities, the finer the sulphur powder, the better, and then prepare some neutral detergent. The ratio of quicklime, sulfur powder and water is 1:1.7:11, and the amount of washing powder is 0.2%-0.3% of water consumption.
Second, the tanning method: When tanning, add the right amount of water in the pot and heat it with a large fire. Weigh the sulfur powder, quicklime and washing powder in proportion. When the water temperature is 40 ° C ~ 50 ° C, the sulfur powder is poured into the pot, the washing powder is added and stirred. When the water temperature is between 80 ° C and 90 ° C, the quicklime is slowly placed in the pot, and the mixture is quickly stirred while the fire is turned down. Once you find the overflow pot, pour a small amount of cold water. Start the recording after the pot (about 13 minutes), and pay attention to observe the color change of the liquid in the pot, and grasp the best heat. When the liquid is brick red, it means that the fire is not enough; when the liquid turns black and green, it means that the fire is big, the effect will be reduced; when the liquid is changed from brick red to reddish brown, it should be stopped immediately. After the ceasefire, the liquid can continue to react with its own residual heat, and the liquid quickly turns into a scented color, which can be cooled.
Third, note: (a) utensils should pay attention to. Do not cook or hold mother liquor in copper or aluminum pans. (2) Pay attention to the ratio of raw materials and the feeding procedure. After the raw materials are placed in the pot, they should be boiled by fire and at the same time pay attention to the color change of the liquid. (3) During the tanning process, a small amount of mother droplets can be dropped into the clear water, and the mother liquor is quickly dispersed to indicate that the fire is almost the same, and the pan can be discharged after further measurement with a Baume hydrometer. If you sink as below, you need to squat again. (4) When using, the water may be sprayed according to the weight multiplication method or the density multiple method according to different tree species, time and concentration requirements, so as to avoid unnecessary phytotoxicity. In the early spring, the orchard advocates spraying 1 or 2 times of high-concentration stone sulphur mixture. In other seasons, the concentration is too high. (5) Avoid using it for a long time. It is best to use the prepared stone sulphur mixture once, and it can not be used for a long time, otherwise it will reduce the efficacy. The mother liquor should be isolated from oxygen, and a layer of kerosene or diesel oil can be added to the mother liquor to prevent oxidation.
Huaxian County Liu Xiuling
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