The main pests in the production of vegetables in my county in the autumn and winter are frosted disease, morbid disease, lignoma, powdery disease, disease, yellow strips, larvae, moths, aphids, etc. Due to the large differences in crop management and other hazards, local vegetable farmers are asked to take care of the pest control in the autumn and winter fields, depending on the plot. It is expected that this will occur as follows:
I. Developments in vegetable diseases
Frosty: vegetables, iguanas and eggplants, which are mainly harmful to leaves, tend to have a 1-6 per cent prevalence rate and a 21 per cent high. It is expected to occur at level 2(3) [middle light, local medium]. In the event of a rainy day, night temperature is at below 15°c。
Soft decomposition: mainly vegetative vegetables, with a common 1-5 per cent rate and a high of 12 per cent. It is expected to occur at level 2(3) [middle light, local medium]. In the event of continuous warmth and prolonged drought and rain, there is a heavier incidence of overwatering, nitrogen fertilization or pre-infestation。
3. Leaf spots: mainly leaf-causing vegetables, peppers, peas, etc., have a prevalence of 2-10 per cent and 25 per cent. It is expected to occur at level 2(3) [middle light, local medium]. In case of warm and rainy weather, heavy humidity in the field and heavy soil, poor drainage and high density, the disease is more severe。
4. Platinum: the mid-term and late stage of vegetables such as leafy vegetables, eggplant fruit and peas. Level 2(4) is expected to occur [medium bias, local medium weight]. Drying after the rain, or less rain, but much moisture in the field, facilitates the epidemic。
Epidemic diseases: mainly in the mid- and late-growing stages of eggplant fruit, leafy vegetables and potatoes. It is expected to occur at level 2(3) [middle light, local medium]. In the event of heavy rainfall, heavy dew, and mist in the morning and at night, the disease is endemic。
Ii. The occurrence of vegetable pests
Yellow strips: mainly harmful to vegetables. The number of insects per 100 species is typically 100-500, with a height of over 1,200. It is expected to occur at level 2 (3) [middle light, local medium]。
2. Vegetable worms and beetling night moths: mainly for cross-facile vegetables, with leaves and, in severe cases, with only leaves left behind, the prevalence is now generally 7-15 per cent, with a high rate of 35 per cent; the number of insects is generally 6-12 and 38 per cent. Level 2(4) is expected to occur [medium bias, local medium weight]。
3. Moths: mainly for cross-facile vegetables, which typically account for 2-8 per cent of the stock; up to 17 per cent; and up to 18 per cent for 100 species. Level 2 (3) is expected to occur [medium, local medium-weight]。
Aphids: aphids are at risk of causing viral disease. The current rate is 3 per cent-10 per cent for cabbage and eggplant and 25 per cent for highs; and the prevalence is as high as 40 for highs. It is expected to occur at level 2(3) [middle light, local medium]. The incidence is more severe in the case of nitrogen-based fertilisation and arid plots。
5. American tectonic fly: spectacular occurrence in pulses。
Iii. Combating observations:
1. Agricultural control: vegetable cultivation should be based on the selection of pest-resistant varieties for seed or seed-bed disinfection; field management should be strengthened, foot-based fertilizer should be applied, decomposed organic fertilizers should be applied, phosphorus and potassium fertilizer should be applied in a timely manner, and the plant should be made more resistant to the disease itself; proper planting should be carried out through a reasonable rotation; a husband's medicine should be delivered before the planting is carried out; water should be drained from the open ditch; and leaves from the field should be removed in a timely manner and burial or burning should be concentrated in order to mitigate the occurrence of the disease。
Green control: use of vegetable sheds for planting, use of insecticidal lamps and seductions such as sex traps, cedars, etc., to reduce the number of insect eggs in the field and reduce the pressure on drug control。
3. Drug control advice: take note of changes in field disease dynamics and select efficient, reciprocal, low-toxic and low-residency agent control in a timely manner; treat the disease in the early stages of the disease and during the very young insects; strictly prohibit the use of national regulations prohibiting the use of pesticides, strictly in accordance with pharmaceutical specifications, and in compliance with safety intervals. Owing to relatively low winter temperatures, slow pesticide breakdown and short vegetable harvest periods, the safety interval is extended by an appropriate period of 1-2 days to avoid product pesticide over-standardization and poisoning。
(1) disease control: frosting can be used as an alternative agent, i. E., methadone, propsynzinc, enzymes; softosis can be used as an alternative agent, i. E. Copper smelt, copper scabies, folate, new enzymes, etc.; foliage can be used as an alternative agent, i. E. Khatsmus, silice methamine, sorghum, benzodiazepine, scabies; platinum can be used as an alternative agent, i. E. Esterazone, trisamone, fungus scabies; and disease can be treated as an alternative agent, i. E., mercuranze, celine zinc and venom。
(2) pest control: anti-yellow meths may be selected for aphids, aphids, aphids, bromocymethrin, etc.; cyanobacteria, green fungus, trichlorfon, trichlorfon, aphids, methals, etc., may be selected for aphids; aphids may be selected for aphids, anti-aphids, dicin, thallone, etc.; and pheasant flies in the americas: may be selected for treatment with a combination of anti-flies, amphicin, bromocyanide, etc. Please describe the agents used by label, while noting the alternate use of the agents to avoid insect resistance。
