Ten Methods of Crop Pest Control
Deep plowing: Earthworms, earthworms and other underground pests are plucked to the ground and chilled to death, which can damage the kidney and aphid nests of pests such as the bollworm, armyworm and wheat leaf bee, and must be oriented to prevent emergence or hatching. Deep plowing is suitable for late autumn and early winter. It is generally required that the Shenzhen Special Economic Zone cultivate 10-13.5 cm. Clean Garden: First remove weeds and destroy the overwintering environment and places of locusts and sloughs. Secondly, the defoliation, corn stover, and grain farms of the fruit trees are subjected to sweeping repression, smashing, and stacking, which can kill more than 90% of the corn borer, millet ash, leaf roller moth, bridge-building insects, and green cabbage insects that live in them. Winter irrigation: During the freezing night, winter irrigation on the idle land, wheat field and orchard can kill locust eggs and larvae on the rhizosphere, and due to the decrease of oxygen content in the soil and sudden drop in temperature, Greatly reduce the emergence rate of earthworms. Scratching: There are many kinds of pests in the rough skin and cracks. Use a knife to scrape the bark, especially to scrape the tree. The apple tree is lightly scratched and scraped, in order to see the yellow and green bark prevailing; the pear and jujube bark is thick enough to re-scratch and scratch, so it is appropriate to see the red bark. After scraping the skin, fruit trees should be sprayed 1-2 times, 3-5 degrees lime sulfur mixture, can effectively control pear garden locust, red spider and so on. With 40% omethoate spray 1500-2000 times, can prevent warts. Whitening: It can eliminate overwintering pests in the thick bark joints of trunks. The whitening agent is formulated with 10-20 parts of quicklime, 2 parts of clay, 36-40 parts of water, 2 parts of lime sulfur cocktail, 1-2 parts of salt, and the above materials can be coated and dried after being melted and mixed. The amount does not prevail. Pruning: When the fruit tree is cut in winter, the branches of insects, wormholes, or eggs with insects are cut off and burned in a concentrated manner, and they can receive both effects. Cold kill: that is, low temperature treatment. Open the doors and windows of the granary, so that the temperature dropped below -5 °C, long-term freezing, can inhibit the reproduction of pests, reduce damage to stored grain. Fumigation: Using 5% of dichlorvos emulsion, 400 grams per 1000 cubic meters, 20-25 times the water spray granary, cotton warehouse, closed 4-5 days, the control effect of wheat moth, cotton bollworm, rice elephant reached More than 90. Dot coating: Using 40% omethoate, 5% monocrotophos, or 50% methamidophos 200 times, dot the top heart, branches and buds of fruit trees such as hawthorn and prickly ash to prevent overwintering mites. Spraying: Around wheat fields, orchards, etc., overgrown with 2.5% deltamethrin, 2% rapid killing D 4000-5000, or 50% methamidophos, 50% monocrotophos 2000-3000 times liquid, 4% of DM mixture powder spraying, can kill a large number of aphids, fly fleas and so on.