Pollution-free control of aphids in cauliflower vegetables
Aphids are commonly known as greasy insects, and the most serious harm is in the seedling stage and bolting bud stage. The damaged leaves turned yellow and curled, which seriously affected the quality and yield of vegetables. The pollution-free control methods of cauliflower vegetable aphids are as follows: 1, selection of improved varieties; 2, appropriate late sowing, seedling bed away from peach orchard and tobacco field, timely cleaning of weeds around the vegetable field; 3, the use of natural enemies; 4, the use of yellow plate trapping; 5, chemical control: selection of kung fu, pyrethroid insecticides for control, transplanting with medicine.
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Cauliflower planting technique
Cauliflower downy mildew is a fungal disease caused by parasitic downy mildew of flagellate subphylum. The oospores of the pathogen overwintered in the soil with the diseased plant, and spread in the field with wind and rain after overwintering. The most suitable climatic conditions for the disease were temperature 20: 24 and relative humidity above 90%. The disease is more serious when it is rainy, foggy or stagnant in the field.
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How to plant broccoli in winter
Broccoli, also known as broccoli, green cauliflower, with fleshy, fat and tender flower branches composed of flower heads for food, complete nutrients, high nutritional value; broccoli likes temperature and cool climate, humid environment, anti-inflammatory heat, drought, not resistant to frost; the optimum temperature for seed germination is 15 ℃ 30 ℃, the optimum temperature for plant growth is 20 ℃, and the flower head is formed.
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