Recently, as temperatures continue to rise, rainfall has gradually increased, creating favorable conditions for the infection, occurrence, expansion, and prevalence of apple pests and diseases. According to my station from June 26 to June 27, the county's five fruit industry townships 24 fixed-point surveys orchard surveys and large-scale spot checks. The rate of early-stage orchard defoliation diseases in the orchards was 41%, and the diseased leaf rate was 1.2%; the rate of rotten diseases and gardens was 40. %, the diseased plant rate was 15%; apple rust was in the jujube section of Houzhuang section of national highway 210. The rate of diseased gardens was 60%, the diseased plant rate was 21%, the diseased leaf rate was 4.5%, and sporadic occurrence occurred in other townships; The moth zoo rate was 48%, the insect leaf rate was 0.9%, and the highest single-leaved insects were 2; the leaf roller moth insect source rate was 51%, and 100 insects were 2.0%. The rate of red spider mites was 30%. The average number of insects in louvers was 16 and the maximum number of insects in single leaves was 18; the rate of locust infestation was 88.9%, and the rate of insect shoots was 15%; other pests and sporadic occurrences occurred. Based on the occurrence of the above pests and diseases, combined with the occurrence data of the pests over the past years and the analysis of the weather forecast from July to August, it is expected that the occurrence trends of the pests in the late growth period of the fruit trees are: moderate occurrence of early defoliation and partial occurrence of orchards; rust disease in juniper planting Occurrences occur moderately in the area; moderate occurrence of lightness occurs in the gold moths; light spiders occur in lighter degrees and some orchards occur moderately. From June to July, fruit trees grow vigorously, and the tree body begins to thicken to form a skin layer, which spreads favorable conditions for the propagation of rot disease. However, at this time, the fruit trees are in a vigorous growth period, and the disease resistance is strong. The lesions are generally limited to The surface layer of the skin forms a surface ulcer, which is the best period for preventing rot disease. I stand to suggest that the township government immediately organize fruit farmers to take measures to comprehensively control fruit trees.
Prevention:
(1) 1:2:200 (copper sulfate 1 kg: quicklime 2 kg: water 200 kg) Bordeaux spray, spray once every 15-20 days. It is recommended to spray on a single day in sunny days.
(2) 43% tebuconazole 5000 times or myclobutanil 4000 times + 25% diflubenzuron 1500 times spray.
(3) 80% mancozeb WP 800 times + 70% thiophanate-methyl water dispersible granules 1000 times + 2.5% cyfluthrin water emulsion 2000 times + 8% ivermectin EC 4,000 times spray.
(4) 50% Alphaaluminium Manganese Zinc Wettable powder 800 times + 5% Aldehyde alcohol wettable powder 2000 times + 40% chlorpyrifos EC 1500 times + (20% Fuling powder 3000 times, Starscream occurs in the orchard) .
(5) The control of rot of fruit trees is carried out by using 1.6% of thiomethoxone 200-fold, or 1.8% of octomycin-acetic-acid-saline 50-100 times or 20% of clove oxime 150-fold.
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