Soil fertigation
Choose a sandy loam soil plot with deep soil, convenient drainage and irrigation, rich organic matter, and loose air permeability. Plowing winter hoe, cultivating more than 25 centimeters deep, 250,000 kilograms per acre applied to maturity, 20 kg of superphosphate, 25 kg of potassium chloride or 100 kg of high-quality compound fertilizer.
Trench system
To avoid water accumulation in carrots, it is necessary to build a high-standard ditch system to ensure smooth drainage and irrigation. After applying the basal fertiliser, press 120 cm in width and leave a ditch with a depth of about 20 cm between each ditch. Dig a ditch with a depth of 33 cm for each ditch, and dig a waist with a depth of 67 cm every 30 m. Ditch, field head dig deep 100 cm drainage ditch, reach irrigation, row out, drop down.
Suitable sowing
Pre-planting seed dressing with new high fat film seed dressing, can repel underground pests, isolate virus infection, increase seed germination rate. The spring can be divided into two sowing dates: from late January to early February sowing, to use plastic film and small arch shed cultivation; in late February to early March sowing, to use plastic film cover cultivation. According to the spacing of 20 cm, ditch and sowing, each trip 5 lines, ditch depth 2-3 cm, with 300 grams per acre species, after sowing cover soil.
Shed management
Take film and arch shed cultivation. When the carrot emergence rate reached more than 50%, the seedlings were taken out of the membrane, and then the soil was compacted along the roots of the seedlings with fine soil, and then covered with a small greenhouse film. In mid-March, the temperature in the shed should not exceed 30 degrees. When the temperature is high, the leeward side must be opened to open the gap for ventilation. After the frost in early April, the shed was removed.
Growth management
Appropriate time seedlings, according to the growth of radish, to ensure a reasonable supply of fertilizer and water, and spray a new high-fat film to protect the fat retention. At the seedling stage, the fruit is sprayed on the soil to strengthen the nutrient matching function, provide nutrient delivery volume, and prompt the radish to quickly and evenly expand. Timely cultivating and weeding keep the soil loose. In order to prevent the appearance of a blue head, it is advisable to tear off the mulch when the carrots are uncovered, and use the fine soil to remove the roots so that the shoulders are not exposed on the soil surface.
Pest Control
Pests and diseases that damage carrots include root knot nematodes, aphids, black rot, and black spot diseases. In the initial stage of disease, sprayed with targeted high-fat lipid membranes is used to prevent and control specific pesticides.
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