Red spider is one of the three major pests of citrus. It occurs about 20 generations a year in our district. It overlaps for generations and causes great harm. In severe cases, the leaves of the fruit tree retreat green and yellow, and a large number of fall off, hindering the normal growth of fruit trees. The control of red spiders is a problem that makes farmers in citrus production areas very headache. How to effectively control red spiders has become a concern for many fruit farmers. After 14 years of scientific research, I have come up with an ideal method for the control of red spiders. In 2004, 36 hectares of citrus groves in my field had almost no danger of spider mites, and it was difficult to find red spiders. The following are the prevention and control tips that I have summed up for my colleagues and farmers: 1. The selection of disease-free pests and seedlings is the key. First, the seedlings we plant are all transferred from regular professional units. The seedlings are virus-free and grow robustly. The size is uniform and it is basically free of pests and diseases, which makes us save a lot of trouble in the future management. For example, in 2004, we imported 22,000 dark-climate oranges from the Citrus Research Institute of Guangxi. The seedlings are very robust and have no pests. They are very well managed after planting. Even though the weather is dry, the growth is very good and the pest resistance is very good. Strong. At the time of planting, they were basically three or four shoots long. The robust tree vigor greatly improved the ability to resist pests and diseases. 2. Insecticide disinfection before admission to the garden Our approach is: use 40% of omethoate 1000 times + Anox worm 1500 times + 50% carbendazim 1000 times mixture soak the seedlings for 3 to 5 minutes, except the root system is not After soaking, all other branches and leaves must be soaked in order to kill the pests in the seedlings and reduce the source of diseases and insects. 3. Day-to-day management Medication is performed at a population density of 5 per head. The author of the use of the best drugs are triphosphine tin, parasites, insects and insects. I used 10% triphosphine tin twice in August 2001, basically eliminating the harm of spider mites, and controlling the occurrence of spider mites only once in the second year, saving considerable expenditure and the number of medications. In 1997, we used two hundred and ninety-nine percent enemy-dead insects (also known as Caltex oil emulsions) to control the red spiders twice in a row, and also achieved good results. As soon as the spray was sprayed, Starscream would die. Because this medicine was closed to the spider's stomata and died of suffocation. It is a pollution-free pesticide that can be vigorously promoted. It is recommended that after the first use, use it again every 10 days to reduce the population to a minimum, or to achieve the purpose of extermination of spider mites. In the course of management in 2004, we used 5% of Innocor 1200 times liquid to prevent and control leaf miners while protecting the shoots. At the same time, we played a role in the treatment of red spiders. The effect was very good. 4. To cultivate natural enemies orchards to leave some weeds properly, to cultivate a certain number of natural enemies, and to control red spiders. To obtain high-quality pollution-free fruits, grass cultivation should be promoted. This will not only cultivate natural enemies, but also reduce soil loss, maintain water and fertilizer, and automatically adjust the microclimate environment in orchards.
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