Aphid pests are mainly eaten by the larvae of the locusts, causing severe damage to the tree trunk or dead plants. Therefore, combining winter pruning to eliminate its overwintering parasites and controlling the occurrence of pests in the coming year is an effective way to reduce losses.

First, Tiancui harm: There are three kinds of Sang Tianniu, Xing Tianniu, Bianhong red neck Tianniu. 2-3 years old generation, endangering xylem and medullary heart, the affected part of the epidermis is normal, there is a row of fecal holes at a certain distance, the insect tract produces straight, red-brown worm excrement piled up on the ground, with a cotton ball, a little 80% dichlorvos Emulsifiable concentrates or 0.2 g aluminum phosphide are used to insert the poison into the penultimate or second row of fecal holes, and all the fecal holes are sealed with wet mud. Aluminum phosphide is very toxic and is safe to use.

Second, the gizards. Parasitic in apples, pears, a 1-2 years, a damage to the shallow cortex, phloem and cambium, the skin cracking of the damaged parts, insect infestation outside the red mucus leakage, commonly known as "take the red oil." The spiral path of the insect spirals upwards and it has already been filled with brown worms. Add 1 kg of kerosene and 0.1 kg of 80% dichlorvos emulsifiable concentrate to the insects, killing their larvae.

Third, pear stem bee. After one year of age, female adults lay eggs in the phloem of young shoots in mid- and mid-April and then use their jagged ovipositors to saw the upper part of the spawning site. Direct two-year-old branches and settled in winter. When cutting in winter, cut the broken piles, pay attention to cut to the branches of the three-year-old, concentrated burning.

Fourth, grapes through the wart moth. Is a grape's main pest, a year in 1's, with the larvae borer damage young shoots, affecting dendrite growth and fruit development, after eating pith, branches tend to enlarge the tumor, and in its winter. When cutting in winter, remove swelling stems and concentrate. For coarser vines, 80% of dichlorvos can be tapped into the borings with cotton to eliminate larvae.

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