There are many diseases and insect pests of Zanthoxylum bungeanum. When various pests and diseases are seriously harmful, the growth of the tree can be weakened. There is no yield in the year, or the yield is low and the quality is poor. Some pests and diseases can also cause the destruction of the whole tree. Now introduce its chemical control methods as follows:
1. Main pests and prevention.
Commonly encountered in production are aphids, spiders, swallowtails, chafers, beetles, blown cotton mites, mulberry snails, snails, etc.
1 Locust: The trunk can be coated with 10 times 40% dimethoate dilution. Practice: scrape the rough skin of the trunk, the length and width are about 15 to 20 cm, and the depth is green and white. Apply the diluted liquid to the top, paste it with paper, and seal it with plastic film. In order to fix the film, The ends are tied with a rope strap. It can usually be done after the occurrence of aphids, from about mid-April to early May. This will not only kill the mites, but will not harm the natural enemies. It is also possible to spray the canopy with 40% of Dimethoate 1500-2000 times or 50% of cockroach 4,000 times before the occurrence of a large number of winged mites, and kill the mites. Pay attention to the timing when applying the medicine, and do not spray the medicine within one month before picking the fruit.
2 Spiders: There are many pesticides for controlling spider mites, and pesticides are also frequently updated. They are usually used to control mites. At present, the commonly used pesticides are: 25% Jingke Caoxing, 15% Qiling, broom net, 34% killing fruit, Da Kezhen, 5% Nisolang and so on. The concentration can be referred to the pesticide instruction manual. The pesticides used should be alternately used in rotation, and one pesticide should not be used to avoid drug resistance.
3 Swallowtail: pesticides that can be used as stomach poisons, such as 80% dichlorvos emulsion 1000 times liquid or 90% trichlorfon 800-1000 times liquid or 50% lozenge or 40% dimethoate emulsifiable oil 1000-1500 times liquid, etc. .
4 Scarab: When the adult is in a large amount of damage, the 405 Lego emulsifiable concentrate can be used to spray the canopy to kill the adult.
5 days of cattle: the old larvae are hooked and killed. Use a knife to cut open the hole, use the wire to make the needle surface, use a thin wire to stir the larvae in the hole, and then use a cotton ball to stain 80% dichlorvos or 40% dimethoate or 25% DDT 5 ~10 times liquid is inserted into the wormhole, and then the hole is sealed with wet mud, which is better for killing the larva.
6 blown cotton mites, mulberry sputum: in the hatching period of the young, or 1 year old nymphs peeled into the 2nd age, with 40% omethoate 800 ~ 1000 times solution, or 50% malathion 800 times solution, Or 10 to 15 times solution of pine base mixture (according to the ratio of caustic soda 2, rosin 3, water 10, sputum to rosin, caustic soda can be dissolved), even spray 2 times, once every 15 days. In addition, after the winter clearing garden, spray Baume 5 degree stone sulfur mixture.
7 Other dangerous animals: For yellow ants, the roots of the damaged plants can be opened, and the affected parts can be dried out and killed by the common concentration of enemy killing or omethoate. The ratio of carbofuran mixed sand can also be 1:1. Spread on the ground of the neck and neck to prevent and control. For the snail, you can use the bamboo brush to brush all the snails on the tree. You can also use the pesticide or the pesticide to spray the trunk. You can also use 80% of the worm granules or 10% polyacetal granules per square meter. The ratio of 1.5 grams is sprinkled on the ground of the tree foot, or it is sprinkled on the ground of the tree foot with a ratio of 1:1 of furandan mixed sand, which defines the boundary area of ​​the snail, making it difficult to damage the tree.
2. Main diseases and prevention.
There are not many diseases of pepper, and there are rust and soot in the production.
1 Rust: Spraying 1:2:100 Bordeaux mixture, or 65% thiram 300-500 times solution, or 65% Dyson zinc 500-600 times solution.
2 soot disease: in the onset of the spraying of Bamei 0.3 ~ 0.4 degrees of stone sulfur mixture.
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