Efficient, broad-spectrum organophosphate insecticide - chlorpyrifos has contact, stomach poisoning and fumigation effects on pests, especially for the prevention and control of brown planthopper. The relevant application technologies are described as follows: First, the product features: 1. Chlorpyrifos Currently there are EC, granules, microemulsions and other formulations. Among them, the highest content of 40.7% of EC (same as cis and LS) is present; most of them are 40% of EC (New Nongpo, Chlorpyrifos, Bole), with the most EC in use, the effect is good; 5% of granules are mainly used The prevention and cure of vegetables and melons underground pests is a good alternative to high-toxicity pesticide 3% carbofuran granules; 30% microemulsions are being gradually promoted. 2. Chlorpyrifos is a poisonous pesticide that is highly toxic to fish and aquatic organisms. It is toxic to honeybees. The residue period on leaves is usually 5-7 days, and the residue period is longer in soil. There is no phytotoxicity to most crops, but it is more sensitive to tobacco and tomato leaf sprays. 3. In the current 5th generation of brown planthopper eggs hatching or low field pest field, use 25% buprofezin (Pentacloprid) plus 40% or 40.7% chlorpyrifos EC (same as Shun, Xinnongbao, Bo (Le, Losburn) 80-100 ml/mu, or 5% fipronil 30-40 ml/mu plus 40%, 40.7% chlorpyrifos EC 80-100 ml/mu spray. When spraying, the field is kept in a 2-3 cm water layer, and the density of the paddy field is high, and the liquid is difficult to be sprayed onto the rice paddy at the base of the rice. The spray is sprayed in a large capacity on a stretcher sprayer; for rice leaf roller, rice thrips, 40.7% of chlorpyrifos EC per acre with 80-120 ml fine mist spray; for Plutella xylostella, cabbage caterpillar, soybean pests, with 40.7% chlorpyrifos EC per acre dosage of 80-150 ml fine spray; for citrus leaf miner, red For pests such as spiders and teaworms, 40.7% of chlorpyrifos emulsifiable concentrate has a dilution concentration of 1000-2000 times. Second, the matters needing attention 1, in the current control of brown planthopper, in order to improve the prevention effect, chlorpyrifos can be mixed with buprofezin (buprofezin), Ruijin special use, to improve the contact of brown planthopper pests, stomach poisoning, fumigation. 2, in the later period of rice medication, but also pay attention to adequate spray volume, in the case of the recommended dosage per acre, the amount of medication should increase or decrease with the spray liquid. In the later stage of rice, the upper limit of the amount should be recommended. Manual sprayer spraying liquid should be more than 50 liters per acre. Stretcher-type motorized sprayer should use more than 300 liters per mu. 3. Observe the procedures for the safe use of pesticides and do a good job of labor protection. 4, grain and mulberry mixed areas, to stay away from the sericulture area prudent medication, to avoid contamination of mulberry fields and silkworm poisoning. SICHUAN UNIWELL BIOTECHNOLOGY CO.,LTD. , https://www.uniwellbio.com