Standard for pesticide use after apple flowering and before bagging

1. Reasonable drug selection: Select high-efficiency, low-toxic, low-residue pollution-free pesticides ; second, choose biological agents, such as microbial pesticides, antibiotics, etc.; third, try to use selective and selective pesticides, Use broad-spectrum pesticides to protect natural enemies and beneficial organisms; Fourth, use pesticides or imported pesticides produced by domestic pesticide manufacturers, and try not to use "new drugs." Most of the so-called new drugs are refurbishment of old drugs. Although the name is good and the packaging is good, the price is more expensive and the use is not affordable. Fifth, we must choose a drug with a good active ingredient content.

2, timely use of drugs, according to the characteristics of the occurrence of pests and diseases, such as gold-grained moth, heartworm and other drill-bit pests to be in the adult stage, egg stage and larvae hatching before the leaves have been drilled, fruit; the scale insects should be secreted The wax layer is administered prior to forming the shell. The second is to use the drug according to the performance of the drug. For example, the late-acting pesticides such as chlorfenapyr and BT should be applied for 3-5 days in advance to maximize the effect of the drug; the protective fungicide should be applied before the infection of the bacteria, and the systemic fungicide should be applied at the beginning of the disease. medicine.

3. Accurate use of drugs should be strictly in accordance with the dosage and concentration of pesticides used on the pesticide label. Second, the correct application method should be selected, such as fumigation or injection to control dried pests such as beetles and geyser; The quality of the drug. Maintain a balanced pressure when spraying the liquid. The spray head is more than 0.5 m away from the fruit tree leaves to ensure the atomization effect. The spray should be even and thoughtful. From top to bottom, from the inside to the outside, the front and back sides of the blade should be sprayed with the liquid medicine. It should not be leaked or sprayed. It is better to wet the leaves and not form flowing water droplets.

4. Safe medication mainly includes safety for humans, animals, fruit trees, fruits and natural enemies. For the young fruit period before bagging, use pesticides such as dry suspension, water-dispersible granules, water-floating agent, microemulsion or wettable powder for safe young fruit. Do not use organic phosphorus or pyrethroids. Insecticides and fungicides containing sulfur, thiram and copper, so as not to cause fruit rust and kill natural enemies.

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