Analysis of Medicinal Protection during Growing Period of Vegetable
Snack Machine,Kitchen Equipment,Biscut Making Machine,Bakery Equipment Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com
Due to the objective existence of pathogenic bacteria, once the temperature and humidity are suitable, the occurrence of melons will infect the seedlings and even cause epidemic once the temperature and humidity are suitable. When the seedlings grow strong or the water, fertilizer, light, temperature, and humidity are properly adjusted, the diseases are The occurrence will be reduced. However, the reality of production tells us that due to the successive cultivation of vegetables, there are more and more host pathogens in winter, including the accumulation of soil-borne diseases, the presence of bacterial debris, and the growing wintering plants. In particular, the occurrence of warm winter phenomenon is very beneficial to the activity of pathogenic bacteria, and has reached the level that without the use of drug protection, the melons and vegetables cannot grow normally. From the moment the vegetables are sown, they grow in a “world†full of germs. If you do not take active and effective pharmaceutical protection, and rely solely on the crop’s own resistance and man-made environmental adjustments to make it grow normally, it is obviously not. realistic. Therefore, the period of growth and development of vegetables is also the period for people to take measures against germs. The mainstream view is that diseases should be "prevention-based, comprehensive prevention and control", and non-mainstream views are that "seeing the disease, medication, disease-free protection." The following is a brief analysis of the pros and cons of the two viewpoints. The basis of “seeing and using medicine†is based on the prevention and control after the central diseased plant is found. In the production practice, when the central diseased plant is found in the field, there are often obvious symptoms. The spores of the pathogenic bacteria are not the initial infection stage, and it is likely to be bacteria. The late growth of silk is even a period of sporulation, which has caused damage to the growth of plants. In particular, it is only observed by naked eyes during production, and its limitations and errors are very large. It is often considered as a central disease strain, and a spot has actually formed. Taking downy mildew as an example, from spotting to widespread epidemics, it is generally 2-3 days. Therefore, the guidance of “seeing medications†is very ambiguous for farmers, and their practicality is not strong, and they are likely to cause late medication and delay prevention and treatment. In the best period, the cost of continuous medication is high, and it is easy to cause serious consequences in the short term. The author believes that early prevention of disease-free vegetables during the growth period is an effective method. This method has clear guiding ideas, farmers are easy to implement, and practicality is strong. Before the onset of vegetables, apply protective fungicides to form a layer of protective agent on the stems and leaves of vegetables. First, it can inhibit the germination of pathogenic spores; second, it can prevent the infiltration of mycelium; and third, it can kill. Some have germinated mycelium that has not yet entered mesophyll tissue. If properly controlled, the crop can be harvested throughout the entire growing season without the use of therapeutic fungicides. To take a step back, even if the crops get sick later, the spread of the disease will not be too fast, and then the use of therapeutic fungicides will be quick and easy to cure. Taking the control of tomato late blight and cucumber downy mildew as an example, once a disease-free strong seedling is transplanted, it should be immediately sprayed with a once-in-a-time fungicide (amisite) or dinynocinamide (ruvan). The preventive effect is better than that of chlorothalonil or mancozeb bactericides, and it is sprayed 1-2 times every 7-10 days. Under normal circumstances, tomato late blight and cucumber downy mildew can not occur or occur. very light. Of course, after the seedlings have been transplanted, they should be immediately sprayed with a therapeutic bactericide. It is too late for the protective bactericide to be used at this time. Spraying such an agent is a waste of money.