One year's plan lies in the spring, comprehensive prevention and control of pests and diseases of pear trees in spring can effectively alleviate the occurrence of pests and diseases throughout the year, improve the quality of pear fruit and increase the economic benefits of farmers.
At present, the main pests and diseases of pear trees are: pear big heartworm, aphids, red spiders, pear hibiscus, cockroaches, mites, black star disease and so on. Prevention time Clean the orchard and scrape the bark from early spring to flower bud enlargement. Lay the plastic cloth under the tree, then carefully scrape the skin and rough skin on the trunk and the big branches, but do not damage the newborn skin. The rough longitudinal skin at the branches should be finely scraped. The scraped bark, larvae, and eggs are concentrated or burned. The dead leaves and residual dried fruits on the trees are removed, and the litter under the trees is cleared out of the orchard for destruction. Finally, the whole tree is sprayed with 3~5 degrees stone sulfur mixture once. Half a month before flowering, irrigation once.
Control measures Flower buds are swollen until the flowering before the whole tree spray 800 times Omethoate and 1500 times the enemy to kill the mixed liquid once, the spray should be even, sprayed to the branches like a light rain.
Before flowering, apply 100 grams of soil fungus to the tree tray, and apply it shallowly after application to make the pesticide and soil fully mixed.
At the beginning of flowering, the whole tree sprays 1000 times of the main effect of chlorocyanate once, preventing the chafer from harming the pear flower (the orchard without artificial pollination conditions cannot spray this pesticide).
In the full bloom period, the whole tree is sprayed with 0.3% borax and 0.3% urea and 0.5% white sugar mixture, which can effectively promote the fruit setting rate of flowers.
After 10 days to 15 days after the falling flowers, the whole tree was sprayed 800 times with carbendazim and 1000 times of beta-cypermethrin mixed solution twice, 7 days apart. Mainly prevent black spot disease, mold heart and chafer, cockroach and so on. Such as the addition of 1500 times imidacloprid, can also treat the mites, hibiscus and aphids.
If there are sky caterpillars or gypsy moths, there are also preventive effects due to the presence of pyrethroids in the liquid.
At present, the main pests and diseases of pear trees are: pear big heartworm, aphids, red spiders, pear hibiscus, cockroaches, mites, black star disease and so on. Prevention time Clean the orchard and scrape the bark from early spring to flower bud enlargement. Lay the plastic cloth under the tree, then carefully scrape the skin and rough skin on the trunk and the big branches, but do not damage the newborn skin. The rough longitudinal skin at the branches should be finely scraped. The scraped bark, larvae, and eggs are concentrated or burned. The dead leaves and residual dried fruits on the trees are removed, and the litter under the trees is cleared out of the orchard for destruction. Finally, the whole tree is sprayed with 3~5 degrees stone sulfur mixture once. Half a month before flowering, irrigation once.
Control measures Flower buds are swollen until the flowering before the whole tree spray 800 times Omethoate and 1500 times the enemy to kill the mixed liquid once, the spray should be even, sprayed to the branches like a light rain.
Before flowering, apply 100 grams of soil fungus to the tree tray, and apply it shallowly after application to make the pesticide and soil fully mixed.
At the beginning of flowering, the whole tree sprays 1000 times of the main effect of chlorocyanate once, preventing the chafer from harming the pear flower (the orchard without artificial pollination conditions cannot spray this pesticide).
In the full bloom period, the whole tree is sprayed with 0.3% borax and 0.3% urea and 0.5% white sugar mixture, which can effectively promote the fruit setting rate of flowers.
After 10 days to 15 days after the falling flowers, the whole tree was sprayed 800 times with carbendazim and 1000 times of beta-cypermethrin mixed solution twice, 7 days apart. Mainly prevent black spot disease, mold heart and chafer, cockroach and so on. Such as the addition of 1500 times imidacloprid, can also treat the mites, hibiscus and aphids.
If there are sky caterpillars or gypsy moths, there are also preventive effects due to the presence of pyrethroids in the liquid.
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