Prevention and control technology of pollution-free vegetable aphids
2022-09-04 04:04:23
Non-polluted vegetables refer to toxic substances that are not allowed to be contained. For some unavoidable harmful substances, such as pesticide residues, nitrates and other harmful substances, it is necessary to reach commercial vegetables below the allowable content range.
First, the occurrence and damage of vegetable aphids
On vegetables, aphids use the adult and nymphs to gather in the leaf back, young leaves, young stems and growth points of the damaged plants, so that the leaves are curled, the leaves are wrinkled, and deformed. When the damage is serious, the growth and development of the plant is slow or even stagnant, which has a great influence on the yield and quality of the vegetables. At the same time, mites are also spreaders of viral diseases.
Second, prevention measures
1. Agricultural control. First, timely ploughing and drying, clearing the field debris and weeds, and timely removing the damaged leaves to reduce the source of mites; second, according to the migration of the winged carp, the yellow plate coated with adhesive or oil Inducing to kill and kill, you can also cover the silver-gray mulch in the open space to avoid sputum; three to rational fertilization, mites like to eat carbohydrates, in the vegetable cultivation process, you should use more used farmyard manure, try to use less fertilizer.
2. Biological control. Make full use of natural enemies to eliminate mites. There are many natural enemies of mites, including ladybugs, scorpion flies, grass mites, and mold fungi. When the mites reach the control index and need to be used, they should also be used in the affected parts of the plant, such as the growth point of the plant, young leaves, young stems, etc., so as to achieve targeted protection and adequate protection of natural enemies.
3. Reasonable selection of counterpart pesticides. Practice has proved that the current control effects are relatively good, and the pesticide varieties that meet the national pollution-free vegetable production requirements are: fast killing spirit, cockroach, cockroach, and trichlorfon. Different pesticide varieties have specific control targets. When we are conducting prevention and control, we must select the pesticide variety, use the correct method and concentration, and cannot use the pesticide varieties prohibited by the state for use on vegetables.
4. Rational use of pesticides. Aphids have the characteristics of rapid reproduction and generation of algebra, and long-term use of a pesticide is highly resistant to drug resistance. Any kind of pesticide pesticide can only be used twice in the same place and should be used alternately. This can avoid the resistance of aphids to the drug, and achieve the purpose of less medication and high benefit.
First, the occurrence and damage of vegetable aphids
On vegetables, aphids use the adult and nymphs to gather in the leaf back, young leaves, young stems and growth points of the damaged plants, so that the leaves are curled, the leaves are wrinkled, and deformed. When the damage is serious, the growth and development of the plant is slow or even stagnant, which has a great influence on the yield and quality of the vegetables. At the same time, mites are also spreaders of viral diseases.
Second, prevention measures
1. Agricultural control. First, timely ploughing and drying, clearing the field debris and weeds, and timely removing the damaged leaves to reduce the source of mites; second, according to the migration of the winged carp, the yellow plate coated with adhesive or oil Inducing to kill and kill, you can also cover the silver-gray mulch in the open space to avoid sputum; three to rational fertilization, mites like to eat carbohydrates, in the vegetable cultivation process, you should use more used farmyard manure, try to use less fertilizer.
2. Biological control. Make full use of natural enemies to eliminate mites. There are many natural enemies of mites, including ladybugs, scorpion flies, grass mites, and mold fungi. When the mites reach the control index and need to be used, they should also be used in the affected parts of the plant, such as the growth point of the plant, young leaves, young stems, etc., so as to achieve targeted protection and adequate protection of natural enemies.
3. Reasonable selection of counterpart pesticides. Practice has proved that the current control effects are relatively good, and the pesticide varieties that meet the national pollution-free vegetable production requirements are: fast killing spirit, cockroach, cockroach, and trichlorfon. Different pesticide varieties have specific control targets. When we are conducting prevention and control, we must select the pesticide variety, use the correct method and concentration, and cannot use the pesticide varieties prohibited by the state for use on vegetables.
4. Rational use of pesticides. Aphids have the characteristics of rapid reproduction and generation of algebra, and long-term use of a pesticide is highly resistant to drug resistance. Any kind of pesticide pesticide can only be used twice in the same place and should be used alternately. This can avoid the resistance of aphids to the drug, and achieve the purpose of less medication and high benefit.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
1.5 inch / 125 mm Medium Duty Caster Wheel PVC/ PU / TPR
2.High quality galvanized support
3.Single wheel PVC / PU / TPR / PVC material
4.Double ball bearings
Swivel Wheels,5 Inch Medium Duty Casters,5 Inch Medium Duty Caster Wheels,5 Inch Swivel Wheels
Yangjiang Xingyang Industry & Trade Co.,Ltd. , https://www.xycaster.com