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Applicable to greenhouses, plastic sheds, improved Yangshuo, multi-span greenhouses and other protective facilities and open green rape flowers pollution-free production.
Second, the choice of origin
We should choose agricultural production areas with good ecological conditions, away from pollution sources and with sustainable production capacity; we should also choose land plots with high topography, convenient drainage and irrigation, low groundwater levels, and deep loose soil; the base is 200 meters away from the main highway line. .
Third, the cultivation season
Winter and spring larvae nursery period from November to December, planting period 12-February in February, the harvest period of 3-5 months.
Spring and summer pods nursery period from January to March, planting period of 3-5 months, harvest period of 6-7 months.
Summer and autumn seedlings from April to May or June to August, planting period from June to July or August to October, and harvest from August to September or October to November.
Autumn and winter larvae nursery period from September to October, planting period from November to December, harvest from December to next year in February.
Fourth, species selection
In winter and spring cultivation, varieties resistant to low temperature, low light, and diseases are selected; in the summer and autumn, high anti-virus and heat-resistant varieties are selected for cultivation.
V. Nursery and sowing
Nursery bed soil use 50% carbendazim WP and 50% thiram WP in a 1:1 ratio, or 25% metalaxyl WP and 70% MX WP according to 9: 1 proportion of mixed, 8-10 grams per square meter of medication and 4-5 kilograms of fine soil mixed bed soil disinfection, sowing two-thirds shop on the bed, one-third cover in the seed.
When sowing, 20 grams of seed is used for planting, and the bottom water is poured. After the water seeps, it is covered with a layer of fine soil. The seed is evenly spread on the surface of the bed, covering the earth 0.6-0.8 cm.
Six, seedling management
Sowing till the seedling stage, the suitable temperature is 20-25°C during the day and 15-16°C during the night; the suitable temperature is 18-23°C during the day and the suitable temperature is 13-15°C during the day; Seedlings to seedlings, suitable temperature during the day at 20-25 °C, suitable temperature at night in the 14-16 °C; slow seedlings until the first 10 days of planting, suitable temperature during the day at 18-23 °C, suitable temperature at night in the 12-15 °C; 10 days before planting until planting, the suitable temperature is 15-20°C during the day and 8-10°C during the night. When the seedlings grow to the 2-leaf stage, seedlings can be divided into seedlings, bed soil is not dry, watering, watering, watering, watering before planting 7 days, seedlings after 1-2 days, low temperature training seedlings. In summer and autumn, seedlings are planted in the open field. After the seedlings are cut off, shade nets are used to prevent rainstorms. In addition, 22-mesh insect nets are also needed to prevent pests. At the same time, it is necessary to prevent bed soil from drying out, and also to eliminate water accumulation in seedbeds in time after the rain.
VII. Planting and field management
Colonization was carried out on a single row of ridges and covered in low temperature season. Before planting, both open field and protected land use ridge cultivation, organic fertilizer and inorganic fertilizer are combined. Under medium fertility conditions, combined with high-quality organic fertilizer 3000-4000 kg per acre, with the application of nitrogen, phosphorus, potash fertilizer that is 20 kg of urea. Diammonium phosphate 20 kg, potassium sulfate 14 kg, cake fertilizer 100 kg.
After 4-5 days after planting, the seedlings were irrigated with water, followed by cultivating the soil by cultivating 1-2 times. The greenhouse should be warmed and kept warm. The suitable temperature should be 20-22°C during the day and 10-12°C at night. It should be covered with straw sheds and other measures to keep warm.
VIII. Pest Control
Priority should be given to agricultural control, physical control, biological control, and scientific and reasonable chemical control; greenhouse ventilation vents should be sealed with insect nets to prevent locusts from entering. In the summer high temperature season, before the occurrence of pests, the greenhouses and greenhouses were covered with insect-repellent nets to prevent the entry of Plutella xylostella, Pieris rapae, and Noctuidae pests; Yellow plates were used to trap and kill aphids and traps were killed by frequency-vibration insecticidal lamps.
Nine, banned highly toxic and high residue pesticides
Phosphor (3911), Phosphorus (Suhua 203), Parathion (1605), Parathion (methyl 1605), Phosphorus (1059), Acetyl, Monocrotophos, Phosphorus Amine, Isophos, Trisphos, Omethoate, Zinc phosphide, Aluminium phosphide, Methyl-thiophosphoric, Methylisotriphos, Cyanide, Carbofuran, Fluoroacetamide, Arsenic, Insecticide , Xi Li Sheng, Sai Li San, net ulcers, chloropicrin, pentachlorophenol, dibromochloropropane, 401, HCH, DDT, chlordane, and other highly toxic, high-residue pesticides. The use of pentachloronitrobenzene and herbicidal ether is prohibited.
Pollution-free green cauliflower production technology
First, the scope of application