The use of two pesticides, i.e., phosphoramidite and lime sulphur, was formulated into a liquid mixture. The effect of controlling the red spider was very significant. The specific method is: first use 750 ~ 1000 kg of water and lime sulfur stock solution prepared into a 0.1 ~ 0.2 Baume degrees of lime sulfur, and then mixed with 45% of water emulsion phosphoric acid 500 ml, that is 1500 ~ 2000 times liquid Mix liquid medicine. The spraying time should be in the first generation of the young generation of red spider moth, about 10 to 15 days after late flowering, and it should be even when spraying. After 2 hours of spraying, all the cubs died. Using this method to control apple red spider, only need to spray once a year to cure, at the same time, apple powdery mildew, ring vein disease also have control effect. The two pesticides used were all commonly used in rural areas. If 1000 kg of water is used to make 2000 times of mixed liquid, 10 mu of orchard can be sprayed, which can save at least 60% of the cost compared with other pesticides. It is also simple and easy to use, and it is not easy to make insects resistant to insecticides. Because of the unsuitable compounding of the iridescent phosphorus and lime sulfur compounds, when preparing the mixed liquid, it must be used with the equipment.
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