Cultivation Key Points of Carrot for Five Crops a Year

I. selection of varieties

The varieties with crisp quality, sweetness and palatability are selected for the carrots sown in spring and summer, and the varieties with high yield are selected for the carrots sown in autumn.

? Second, the main points of cultivation

The first crop was sown in early February and listed in early April, with a growth period of about 40 days and a yield of 2000,000kg carrots per mu; the second crop was sown in early April with a growth period of 40 days, yielding 2500kg / mu of carrots; the third crop was sown in late June with a growth period of about 35 days and 2000kg / mu of carrots. The fourth crop was sown in the first ten days of August, with a growing period of 30 to 35 days, yielding 2500 to 3000 kg of carrots per mu; the fifth crop was sown in mid-September, some of which were listed in early winter, and the rest were listed around the Spring Festival, yielding 4500 kg of carrots per mu. Strip sowing was used in the first four crops, with a row spacing of 25 cm and a plant spacing of 15 cm to 20 cm, with about 15000 nests per mu, and each stubble should be planted at the seedling three-leaf stage.

? III. Key points of fertilization

Carrot has a short growth period and needs a large amount of fertilizer. generally, 3000 kg of animal manure, 50 kg of calcium superphosphate and 20 kg of urea are applied per mu of base fertilizer, and 50 kg of ammonium bicarbonate is applied per mu in the period of big leaves. In case of drought, should be irrigated with fertilizer and water, otherwise, the surface of radish is not smooth, there will be bran heart, affecting the quality and yield.