Apple fibrous heart disease is a compound disease that is complicated in the process of apple disease infection and consists of a variety of weak parasitic bacteria. With the changes of natural conditions and the adjustment of production measures, this kind of disease, which is a sub-general type of disease, has gradually become a major disease that has been seriously jeopardized in recent years. In particular, the phenomenon of more dangerous escalation occurred in 2008, which has gradually caused widespread Fruit farmers and scientists attach great importance to it. However, in the prevention and control of the disease, some fruit farmers have some misunderstandings in the prevention and treatment of apple fibrous heart disease due to technical and other reasons, resulting in poor control effect.
Do not dare to take drugs during flowering, and the culprit in the best prevention and treatment period of apple mold disease is mainly in the process of apple flowering and fruit setting. The pathogens infiltrated into the fruit and infected the fruit. Therefore, the best time to control apple mold disease is the apple flowering period, and this period is the crucial period to determine the fruit setting rate and yield. Since the farmers are worried about the impact of the yield, they generally do not dare to use drugs during this period, thus delaying the optimal prevention and control period. Pathogenic bacteria can not be eradicated in time, resulting in the increase of the risk of apple mold heart disease year after year.
Improper selection of pharmaceuticals and poor control effect In recent years, the price of production materials has risen rapidly. This has led farmers to adopt a cautious attitude. In particular, the use of high-efficiency and high-priced biological pesticides has been relatively reduced, and many farmers have used relatively low-cost chemicals. Apple mold heart disease. Actually, through scientific experiments and practical applications in the field, the chemical agents such as carbendazim and thiophanate-methyl have relatively poor control effects on apple fungal heart disease, and have a greater impact on fruit setting rate, and also cause a significant increase in malformation, and apple florescence is not appropriate. use. Bio-agents such as Polaroid, polyoxin, and clobetane (multiple antibiotics) have good control effects, and they have no significant effect on fruit setting rate, and they can be used with confidence. During the prevention and treatment period, it is recommended to use it in the early stage of flowering and early fruit setting period. The control effect is better, but it is necessary to pay attention to spraying time after 4 pm, and to use a spray nozzle with better atomization effect. Do not use the spray gun to minimize the fruit set. The impact of the rate.
Emphasis on chemical control and neglect of cultivation measures After investigation, it has been found that the main factors leading to the increase of the incidence of apple mold disease in apple trees are the tall orchard trees, high degree of canopy closure, and the increase in the area of ​​orchard bags, and the quality of fruit bags. However, fruit growers often only pay attention to chemical control and neglect cultivation measures, which can only reduce the incidence rate temporarily, and cannot solve problems in a long-term and stable manner. Therefore, prevention and control of apple mold must pay attention to cultivation measures, it is recommended that farmers: First, we must choose a dwarf, simple, high light efficiency tree; Second, the scientific and rational transformation of closed orchards, remove some of the branches affecting light, open the light path, reduce The degree of closure; the third is to choose the Kobayashi bags and other breathable, better drainage of paper bags, do not plan to use inferior bags cheaper, fundamentally reduce the incidence of apple medulla disease year by year.
In addition, the majority of farmers should also pay attention to apples, because the apple mold disease is a more complex disease process, the impact of technology, weather, geographical location, fruit bag quality, the degree of orchard confined, the control effect is currently unstable, and some The year is good, and some years are poor. Therefore, it is advisable to consult with agricultural technicians to determine the best local control method.
Do not dare to take drugs during flowering, and the culprit in the best prevention and treatment period of apple mold disease is mainly in the process of apple flowering and fruit setting. The pathogens infiltrated into the fruit and infected the fruit. Therefore, the best time to control apple mold disease is the apple flowering period, and this period is the crucial period to determine the fruit setting rate and yield. Since the farmers are worried about the impact of the yield, they generally do not dare to use drugs during this period, thus delaying the optimal prevention and control period. Pathogenic bacteria can not be eradicated in time, resulting in the increase of the risk of apple mold heart disease year after year.
Improper selection of pharmaceuticals and poor control effect In recent years, the price of production materials has risen rapidly. This has led farmers to adopt a cautious attitude. In particular, the use of high-efficiency and high-priced biological pesticides has been relatively reduced, and many farmers have used relatively low-cost chemicals. Apple mold heart disease. Actually, through scientific experiments and practical applications in the field, the chemical agents such as carbendazim and thiophanate-methyl have relatively poor control effects on apple fungal heart disease, and have a greater impact on fruit setting rate, and also cause a significant increase in malformation, and apple florescence is not appropriate. use. Bio-agents such as Polaroid, polyoxin, and clobetane (multiple antibiotics) have good control effects, and they have no significant effect on fruit setting rate, and they can be used with confidence. During the prevention and treatment period, it is recommended to use it in the early stage of flowering and early fruit setting period. The control effect is better, but it is necessary to pay attention to spraying time after 4 pm, and to use a spray nozzle with better atomization effect. Do not use the spray gun to minimize the fruit set. The impact of the rate.
Emphasis on chemical control and neglect of cultivation measures After investigation, it has been found that the main factors leading to the increase of the incidence of apple mold disease in apple trees are the tall orchard trees, high degree of canopy closure, and the increase in the area of ​​orchard bags, and the quality of fruit bags. However, fruit growers often only pay attention to chemical control and neglect cultivation measures, which can only reduce the incidence rate temporarily, and cannot solve problems in a long-term and stable manner. Therefore, prevention and control of apple mold must pay attention to cultivation measures, it is recommended that farmers: First, we must choose a dwarf, simple, high light efficiency tree; Second, the scientific and rational transformation of closed orchards, remove some of the branches affecting light, open the light path, reduce The degree of closure; the third is to choose the Kobayashi bags and other breathable, better drainage of paper bags, do not plan to use inferior bags cheaper, fundamentally reduce the incidence of apple medulla disease year by year.
In addition, the majority of farmers should also pay attention to apples, because the apple mold disease is a more complex disease process, the impact of technology, weather, geographical location, fruit bag quality, the degree of orchard confined, the control effect is currently unstable, and some The year is good, and some years are poor. Therefore, it is advisable to consult with agricultural technicians to determine the best local control method.
Take the original herbs, remove impurities, wash water, Run through, cut thin slices, dry. Or use when crushed, Coptis should not over 14.0% of the standard moisture, the total ash content of not more than 5.0%, dilute alcohol extract not less than 15.0%. Berberine hydrochloride is not less than 5.5% berberine, berberine not less than 0.80%, berberine not less than 1.6%, palmatine not less than 1.5%.
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