In recent years, the problem of pest resistance has become more and more prominent. There are many factors that contribute to this problem, but there is no doubt that it has a lot to do with the lack of scientific knowledge and unreasonable drug habits.
Farmers in many places in the prevention and control of diseases and insect pests in the process of re-treatment of light prevention, see insects hit insects, see the disease before treatment, did not understand the law of occurrence of pests and weeds, can not seize the best timing of drug use, and blindly pursue fast , Efficient, often blindly increase the amount of medication and the number of medications. Some other farmers saw that a certain kind of pesticide was effective, they used it continuously for a long time, and they did not rotate. Too much reliance on a single chemical agent for prevention and control, coupled with lack of attention to crop rotation, fallow cultivation, and intercropping, and long-term continuous cropping and continuous planting, have led to a rapid increase in the resistance of insect pests and a significant reduction in control effectiveness. This not only increases production costs, but also contributes to the safety of agricultural production and agricultural products. Quality and safety and ecological environment have caused adverse effects.
What needs attention is that the current resistance of rice and vegetable pests to the commonly used pesticides in the field has increased significantly, especially for diamondback moth and rice planthoppers. The prevention and control situation is not optimistic, and it is urgent to strengthen scientific drug use. For pesticide users, it is particularly necessary to change unscientific drug habits, because if they are allowed to continue to develop, they may eventually fall into the dilemma of having no medicine and no cure for pests and diseases.
How to delay pest and disease resistance, experts can give a lot of technical guidance, such as rotating pesticides with different mechanisms, such as adopting comprehensive prevention and control measures, but the key is to change the concept.
In fact, the reason is very simple. No matter how good the food is, it will be enough. Even the best medicine will always be resistant, so you can't use only one pesticide for a long time. Ordinary pesticides can prevent and control, do not blindly pursue the use of good drugs, new drugs, or a good time at a critical moment does not work. When using drugs, according to crops and pests and diseases, identify the best timing of drug use, master the dosage and concentration, do not just increase the amount and frequency, try to use the lowest cost to achieve the best control effect. In addition, comprehensive prevention and control is the fundamental solution. We must integrate measures such as cultivation and management, physical control, and biological control, and conduct interplanting in a timely and rational manner, focusing on the prevention of pests and diseases in advance. This can have a multiplier effect.
Cultivating scientific drug habits is not a matter of overnight. It requires the joint efforts of government departments, plant protection technicians, grassroots pesticide dealers, and pesticide users. We expect a small step in the transformation of ideas and slowly become a big step in action.
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