During this time, there are also many friends to me to consult some plant plant protection maintenance issues, especially the problem of pest protection, so it is necessary to sort out some plant protection experience and technical information with you, due to the limited space of this article I will introduce the control of ten common pests, from the hazard mode, hazard object, habits and chemical control four points to summarize and analyze, I hope that everyone can play a reference role in the actual production operation.
1, inchworm. Hazard mode: eating leaves. Hazards: Many broad-leaved tree species, vine shrubs and herbaceous tree species in the nursery. Chemical control: 1, half a month before the germination of new shoots, spray 90% crystal dimethoate 1000 times liquid or 80% dichlorvos emulsion 1200 times liquid or 50% octyl thiophosphate emulsion 1000 ~ 1500 times liquid. 2. Spray 2.5% kung fu permethrin or 20% cypermethrin or 2.5% enemy killing emulsion and other permethrin insecticides 4000 to 5000 times liquid or 5% Ruijinte suspension 1500 times liquid after leaf spreading.
2. Aphids. Hazard mode: sucking juice. Hazards: Almost all plants in the nursery. Chemical control: 50 ml of aphid aphid clear emulsion or imidacloprid series products 1500 to 2000 times liquid spray per mu, 10% of aphid net 60-70 grams; 25% anti-aphid 3000 times liquid spray control, the rotation effect is better.
3. Red spider. Also known as leaf mites, the way of harm: sucking juice. Hazards: Moon season, peach, cherry blossom, begonia, rhododendron, and other flower shrubs are particularly serious, and the herbaceous plants of the mallow family are also the hardest hit areas. Chemical control: with mite hazard 4000-5000 times uniform spray, 40% trichlorocarcidol emulsion 1000-1500 times liquid, 20% mite dead net wettable powder 2000 times liquid, 15% pyridoxine emulsion 2000 times liquid, etc.
4, Star Sky Bull. Hazard mode: Moth-eating branches. Hazard objects: The hazard objects distributed in most parts of China are mainly large native plants, such as poplar, willow, elm, oak, eucalyptus, eucalyptus, acacia, neem tree, safflower wood, etc. Chemical control: 1, to prevent adult insects from laying eggs: in the adult activity period, with 80% dichlorvos emulsion or 40% Leguo emulsion, mixed with an appropriate amount of water and yellow mud stirred into a thin paste, brushed on the trunk base or at a distance of 30-60 cm below the trunk. 2. Poison and kill the larvae, and use a veterinary syringe to inject 80% dichlorvos emulsion or 40% Lego emulsion 5-10 times liquid into the worm mouth and seal the borer hole.
5. Grubs. Also known as chicken worms, the harm is to nibble on plant roots and seedlings. Hazards: It can harm the underground part of almost all plants, and the seedlings are more vulnerable. Chemical control: Sowing and transplanting seedlings with 3% furandan granules of 3-8Kg or 5% octyl thiophos granules per mu were found to be harmful to watering 1200 times octyl thiophos or 800 times 90% of the dimethodium or 40% of the oxidized fruit.
6, insect shell insects. Hazard mode: The main harm object of sap sucking: there are many harmful plants, especially rose family, camellia trees and vine shrub plants, and other plants such as pomegranates, rhododendrons, hibiscus, privets and other plants are also common. Chemical control: The first nymph crawling period or female adult egg laying and egg hatching are the two best chemical control periods. Spray 1000 times the liquid of borer or 3000 times of birin or 500 times of borage or 500 times of borax or 80% of dichlorvos emulsion.
7, military insects. Hazard mode: sucking juice. Hazards: Rosaceae, Rhinoceros, Camellia, Leguminous plants, as well as rhododendrons, gardenias, laughing, plum, Fuso, poplars, etc. are also more common: chemical control: mid-April to early May wintering adult insect activity period is the focus of control, the selection of 80% of the dichlorvos 1000 times liquid. In mid-May, a small number of white newly feathered adult insects appeared in the leaves, indicating that the first generation of nymphs had basically hatched, and the adult insects had not yet laid eggs, and the control effect was the best at this time, and the 40% oxidized Leguo 1000 times liquid, or 50% marathon 1500 times liquid, or 50% borer pine emulsion 1000 times liquid spray, and the continuous control of the above agents in the growing season can completely eliminate the insect pests.
8, thorn moth. Hazard mode: eating leaves. Main hazards: almost all plants in the nursery. Learning to control: spray 80% dichlorvos emulsion 1200 times liquid or 50% malathion emulsion 1000 times liquid and 25% iminothion emulsion 1000 times liquid during the peak of the larvae.
9, poisonous moths. Hazard mode: eating leaves. Main hazards: Most common woody tree species. Chemical control: Spray 800 times 50% of borage pine emulsion or 3000-5000 times of 2.5% bromohydropethrin.
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———— the world of horticulturists Zhan Jiayong