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1. Strengthen cultivation management to improve tree disease resistance
From the beginning of August, combined with spraying and spraying 3-4 times of candy, Gaomei Shi, leaf-preserving agent, Fuwan potassium and 0.5% potassium dihydrogen phosphate, interval 10-15 days. Look at the sky to use the water; stop the ring cutting and stripping, timely and appropriate autumn trimming, the diseased branches, long branches, and the branches and densely squeezed branches, thin parasitic branches to facilitate ventilation and light; timely inspection The bag is removed and some of the insect fruit, diseased fruit, fruit-seeking fruit, malformed fruit and sun-dried fruit are removed to reduce nutrient consumption and enhance the tree potential to improve the tree's resistance to stress.
2, scientific selection of drugs in a timely period
After August-September, it is the maturity stage of mid-late ripe apples, and it is also the epidemic stage of the spread of pathogens. At this time, it should be sprayed according to the weather conditions. Usually no rain rain or small, can be routinely performed; if Rainfall, high temperature and humidity, suitably shorter intervals, and to increase the number of spraying note the absorption of bactericidal and protective fungicides used interchangeably, are available excellent biocides 68.75% eBao 1500 times, 10% higher BWT 2500-3000, 1200-1500 Laid bacteria kill times, 800 times the 70 percent methanesulfonic torr, 80% of large green M-45800-fold, 40% Fuxing 800-1000, there are cheap Bordeaux mixture. When formulating pesticides, adding a quantitative synergist, penetrant or spreading agent, not only the drug effect is increased, the residual effect period is long, and the rainwater is washed away, and the control effect is quite good.
3, pay attention to the quality of spraying
Spraying process is to uniformly thoughtful, comprehensive, detailed and not sloppy, but also spraying the leaves and stems of fruit, focus, leaving troubles, we will do our best to rule as early as the late apple rot disease, treatment, and control The minimum level.
4, dip fruit postharvest
Before the fruit is harvested, it can reduce the incidence of a series of rotten fruit diseases during storage by using 2-6% calcium chloride, fruit disease or bacterial poisoning for 0.5-1 minutes.
Late-stage control of apple rotten fruit disease
Apple rotten fruit diseases mainly include apple ring rot, anthracnose, rot, black rot, brown rot, etc., all of which can cause good fruit to become a defective fruit, affecting yield and reducing orchard benefits. Apple rotten fruit disease usually infects the fruit in the young fruit period (May to July), and then appears to be latent, and forms a disease in the near mature stage (August to September), and then the disease occurs in a few days. Especially in the late rainy season, the temperature and humidity conditions are prone to outbreaks. Therefore, from now on, every fruit grower must earnestly and comprehensively do a good job in ensuring fruit and promoting income and income.
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