Prevention and control of apple spotted leaf disease

1. Sprinkle once before the germination of the clearing garden, and spray again after the fruit is under the tree or during the red period of the flower red, that is to say, the clearing medicine must be sprayed twice. The effective medicines are: sterilizing excellent 1200-1500 times liquid, clearing 1000-1200 Double liquid, orchard clear 1000 times liquid, Fuxing 8000 times liquid, and secondly, timely clean up the leaves, take the source of the bacteria out of the orchard, and burn it intensively.

2. Strengthen the management of the orchard to deepen or deep-plow the soil, pay attention to fertilization and irrigation, strengthen the input of farmyard manure, and rationally pruning ("large reshaping" combined with traditional shearing method) to promote ventilation and light transmission.

3, the management of diseased trees has been diseased, the tree is coated with 1:5 times the amino acid aqueous solution, or 1:4 "Alliance" compound fertilizer solution, can also be combined with spraying amino acid fertilizer or humic acid fertilizer (such as “Jinong” humic acid foliar fertilizer) is beneficial to enhance the tree potential and promote the amount of flowers in the coming year.

4. When the medicine is sprayed reasonably, the early stage (from April to May, spraying the modern sterilization excellent 1200-1500 times liquid, the agricultural resistance 120 800-1000 times liquid, the multi-antimycin 600-800 times liquid, the gram mold, the mold Clear 800-1000 times liquid; in the middle and late period (June-September) spray 3% polyoxygen 500 times liquid, Baoli'an (polyoxymycin) 1200-1500 times liquid or 10% Bao anti-100-1500 times liquid, It can also spray and combine manganese and manganese series, such as “Spoke” 800-1000 times, “Nongge” 1200 times liquid, DuPont Yibao 1200-1500 times, and also “Bideli” 800 of Shuangji Pesticide Factory - 1000 times liquid.

5, prevention and control of "insect pests" to reduce infection and control of leaf miner and lepidopteran pests, leaf-feeding pests, is another effective way to prevent the disease, such as: the damage symptoms on the leaves of the leaf miner, is also repeated Infecting sensitive areas, timely prevention and control, in order to reduce the number of infestation, anti-effect agents have young ureas: such as avidin urea urea suspension 2500-3000 times, Kangzhuang young urea 1500-2000 times liquid, killing young Urea No. 3 suspension agent 2000 times liquid.
In short, strengthen the integrated management of the tree, prevent the disease, prescribe the right medicine, choose reliable agricultural products, and eliminate the germs in the bud. In this way, the leaves are green, the flower buds are of good quality, and the fruit trees have high returns, which fundamentally eliminates the disease. .
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