When introspecting production in the field, farmers are often found to have the following misunderstandings in the prevention and control of crop pests and diseases: (1) Blindness prevention and control: pesticides are applied without clarifying the condition and pests. (2) Pesticides are not suitable for the selection: insecticides are used when insects are seen and fungicides are used when they are seen. (3) Unable to grasp the optimal control period for routine pests. (4) Improper preparation of pesticides. (5) Spraying pesticides is not correct. (6) Improper application of pesticides. Due to the above reasons, the appropriate period of prevention and control was delayed, the control cost was too high, and the control effect was poor. In response to the above problems, several suggestions are put forward for production reference in connection with actual production.
First, understand the pest situation, the right medicine; seriously identify the symptoms of pests and diseases, a variety of pests mixed or unclear identification of the case, consult a scientific and technical personnel, find out the condition of pests, select efficient counterparts of pesticides, Right remedy.
Second, seize the appropriate period of prevention and control, organize on-site training; agricultural sci-tech personnel must always go deep into the fields for field inspections, carry out on-site training sessions during the period of the best pest prevention and control, and in the simplest way, enable farmers to master different diseases at the earliest opportunity. Insect control time and methods.
Third, the preparation of liquid medicine in strict accordance with the standard concentration; in the liquid preparation, read the instructions carefully, strictly according to the proportion of the preparation of pesticide concentrations, is strictly prohibited to increase the dosage or concentration, do not use well water and sewage to pesticides. Before cleaning the pesticide, clean the bucket and watering can with water. Add a small amount of water to the bucket first. Weigh the potion according to the standard area and add it to the bucket. Add water to dilute it and stir it until ready; add one third of the water to the watering can. According to the concentration of the liquid medicine, the well-distributed medicine liquid will be evenly divided into several portions, any one of them will be added to the barrel, and the mixture can be sprayed by adding enough water to stir.
Fourth, master the drug application techniques and deliver the drug in place. Adjust the sprayer when spraying pesticides. When the liquid sprays from the nozzle, a layer of mist forms on the stems and leaves of the crop. When applying pesticides, you must master the speed, neither fast nor slow. When pesticides are applied, different pesticides and methods of applying pesticides should be selected according to the hazards of the pests and the parts where they occur, 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, ditching, ponding, or pouring; spraying on the back of the leaves will spray the liquid on the opposite side of the leaves, such as controlling aphids and rice planthoppers. Ye Yan chooses insecticides with strong absorbability to move the liquid from top to bottom and repeatedly spray evenly onto the stems and leaves from the bottom up.
Fifth, timely application of pesticides; pesticides should be selected when the sunny day, according to the law of insects, do a favorable time pesticide application. Diseases and most insect pests should be applied after 4 pm. Nocturnal insects such as beetles and ground tigers are required to apply in the evening.
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