Crop pest control recommendations

When guiding the production in the field, it is often found that farmers have the following misunderstandings in the prevention and control of crop pests and diseases: (1) blind prevention and treatment: pesticides are applied without clearing the disease. (2) The choice of pesticides is not correct: use insecticides when seeing insects, and use fungicides when seeing spots. (3) The best prevention and control period for conventional pests and diseases can not be grasped. (4) Improper preparation of pesticides. (5) Spraying pesticides is not correct. (6) Improper time for pesticide application. Due to the above reasons, the appropriate period of prevention and control has been delayed, resulting in excessive control costs and poor control effects. In response to the above problems, combined with the actual production of several suggestions for production reference.

First, find out the situation of pests and diseases, the right medicine: carefully identify the symptoms of pests and diseases, a variety of pests and diseases mixed or the pests and diseases are not clear, ask the scientific and technical personnel to find out the disease and insects, choose high-efficiency counterpart pesticides , The right medicine.

Second, grasp the appropriate period of prevention and control, organize on-site training: agricultural science and technology personnel should often go to the field to check the situation, in the best prevention and control period of pests and diseases, carry out on-site training sessions, in the simplest way to enable farmers to master different diseases at the fastest Insect control time and method.

Third, strictly in accordance with the standard concentration of pharmaceutical liquid: in the preparation of liquid medicine, read the instructions carefully, strictly proportional to the preparation of pesticide concentration, it is strictly prohibited to increase the dosage or concentration, no well water and sewage against pesticides. Before cleaning the pesticide, clean the bucket and the watering can with water. First add a small amount of water to the bucket, weigh the medicine according to the standard area and add it to the bucket. Dilute with water and mix well. Add one third of the water in the watering can. According to the concentration of the liquid solution, divide the prepared liquid into several parts, and take one part into the barrel. Add enough water and mix well to spray.

Fourth, master the application of techniques, send medicine in place: adjust the nozzle when spraying pesticides, so that the liquid sprays from the nozzle to form a layer of mist adhered to the stems and leaves of the crop. When applying pesticides, you must master the speed, not fast or slow, so do not leak the spray. When applying pesticides, different pesticides and pesticides should be used according to the hazards and occurrences of pests and diseases, and pesticides should be delivered in place. For pests and diseases that endanger the roots, the pesticide is applied to the roots of the plants, applied by the ditch, applied or poured; the food on the back of the leaves is sprayed onto the opposite side of the leaves, such as controlling aphids, rice planthoppers, Ye Wei chooses a systemic insecticide that sprays the liquid from top to bottom and repeatedly from bottom to top onto the stems and leaves.

Fifth, timely application of pesticides: when applying pesticides, choose sunny days, according to the law of insect activity, to achieve a favorable time to apply pesticides. It is advisable to use pesticides and pesticides for most pests after 4 pm. Evening insects such as chafers and ground tigers should be applied in the evening.

More pesticide knowledge , please pay attention to China Pesticide Network

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