What are the hazard characteristics and causes of the green blind mites? (with prevention and treatment methods)
The green-spotted scorpion is a pest belonging to the Hemiptera, the genus Blind, also known as the small bug. Green blind mites can harm a variety of fruit trees, as well as a variety of cash crops such as cotton and alfalfa. Especially since 2004, with the large-scale development of jujube trees and cotton, the green blind cockroaches seriously damage the fruits and leaves, and the quality of the fruit is degraded. Some jujubes are even produced, which can be seen from the green scorpion. How big is the hazard. Here is a brief introduction to the hazard characteristics of the green blind cockroach, its causes and its prevention methods. First, the hazard characteristics of green blind mites 1. Green scorpion squirts the sap of young, bud, flower bud and young fruit of fruit trees with nymphs and adults. 2, the damaged leaf buds first appear chlorotic spots, with the extension of the leaves, the small points gradually become irregular holes, commonly known as "breaking leaf disease", in severe cases, the spring leaves of the jujube leaves can not germinate, the tree is bare. 3. After the flower buds are damaged, they stop developing and die off, and the flowers almost all fall off. 4. After the young fruit is damaged, some black necrotic spots appear, and some of the raised blisters appear. The flesh tissue is necrotic, and most of the damaged fruit falls off, which seriously affects the yield. Second, the cause of the outbreak of the green blind cockroach 1. The parasitic range of the green blind mites is extensive: the green scorpion mites have been the main hazard on pasture and cotton. However, with the adjustment of the agricultural structure, it can also be transferred to fruit trees such as jujube trees for harm. 2. Appropriate climatic conditions: The occurrence of green blind mites is closely related to climatic conditions. Temperature 20-30 ° C, relative humidity 80% -90% is most suitable for its occurrence, especially continuous rainy days provide favorable conditions for the occurrence of green blind mites. 3, prevention and treatment is not timely: Green blind cockroaches have not been able to get strong control in the region. On the one hand, most of the adults of the green-spotted cockroach climb to the leaves and buds at night or in the early morning to catch food. They crawl quickly after being shocked, and because their individuals are small, the body color is similar to the leaf color and is not easy to be found. On the other hand, because of the irregularity, small scale, and no disasters over the years, it has not caused attention in production, and missed the timing of spraying, causing the flood of green blinds. Third, the prevention and treatment of green blind cockroaches 1. The green blind pupa is overwintering in the dead branches, weeds, and rough skin cracks. After the deciduous leaves, the fruit trees are cleaned of fallen leaves, rotten fruits, weeds before winter, and the main and main branches are completely scraped. Decentralized destruction, whitening of the trunk or application of sulphur slag. 2, the production season, clearing under the canopy to prevent weeds, can reduce wintering eggs. 3, the use of automatic physical moth-killer, the use of the phototaxis of the insect, can effectively "electric shock" adult. 4. The hatching of the green-spotted eggs requires more than 65% of the relative humidity. Therefore, according to the weather conditions, the spraying should be carried out in time for the nymphs of each generation. 5, spray time should be selected before 10 am and after 16 pm, but the temperature should not be too low, otherwise it will affect the efficacy. 6. Because the green blind owls are lurking in the weeds and inter-row crops under the trees during the day, the trees are harmful at night. Therefore, the spraying should focus on the trunks, the weeds on the ground and the inter-row crops. Spray all. The prevention and control of green blind mites is best done with physical prevention. In the usual cultivation of crops, weeds should be removed in time, and the fruit trees should be whitened in winter to prevent the green scorpion from surviving in winter. Rotary Evaporator,Intelligent Temperature Control,Small Lab Rotary Evaporator,Explosion Frequency Inverter Guangdong Widinlsa International Co.Ltd , https://www.gdwidinlsa.com
