Best Planting and Fertilizing Time for Carrots and Key Fertilization Techniques

The carrot is a biennial herbaceous plant widely cultivated in China, with a thick, fleshy, long conical shape in red or yellow. So when is its best planting and fertilizing time? What are the key points of fertilization techniques? Let the editor of Tuliu.com introduce them to you one by one below.

1. When is the best planting and fertilizing time for carrots?

Generally, different carrot varieties and soils of different fertility levels produce different yields per mu, with the general yield per mu ranging from 3500-5000 kg, but mastering the best planting time and fertilizing time for carrots is one of the keys to helping increase yield.

1. Planting time for carrots

Carrots can be divided into spring and autumn sowing and planting. The spring sowing time is late January to early February, and harvest can be carried out in early April; generally, carrots planted in open fields can be planted in March-April, and those planted in small arch sheds can be sown in early March.

The autumn planting time for carrots is May-June, and harvest can generally be carried out in July-August.

2. Fertilizing time for carrots

The first is the application of base fertilizer before sowing. The first topdressing is carried out 20-30 days after emergence, the second topdressing is carried out after final thinning, and the third topdressing is carried out during the root expansion period. In addition, note that in the late growth stage of carrots, excessive fertilizer and water should be avoided to prevent root cracking.

2. What are the key points of the best planting and fertilization techniques for carrots?

1. Apply well-rotted organic fertilizer

The supply of nutrients in the early stage of carrots mainly depends on base fertilizer. The base fertilizer should mainly be pig, chicken, cow, and horse manure and human urine, and it must be fully rotted when applied.

2. Rational fertilizer formulation and fertilizer use

Fertilizer application for carrots includes nitrogen fertilizer, potassium fertilizer, and phosphorus fertilizer. Nitrogen can promote the growth of branches and leaves and synthesize more nutrients; phosphorus is beneficial to nutrient transport and improves quality, and it has a great effect on the initial growth and development of carrots; potassium can promote the meristematic activity of the cambium in the roots, with an obvious yield-increasing effect. Therefore, the application of these three fertilizers must be used in combination. The general application ratio of the three fertilizers is 10:4:26. Phosphorus fertilizer is applied as base fertilizer; part of the potassium fertilizer is used as base fertilizer, and the rest is used as topdressing when the fleshy root expands; half of the nitrogen fertilizer is used as base fertilizer, and the other half is applied as topdressing during the peak leaf growth period and when the fleshy root reaches 0.6 cm in diameter.

3. Supplementation of trace elements

Carrots absorb a relatively large amount of calcium. When the calcium content is high, it will reduce the sugar and carotene content of carrots; when calcium is deficient, it easily causes hollow heart. Carrots absorb only a small amount of magnesium. The more magnesium there is, the more sugar and carotene they contain, and the better the quality. Apply calcium magnesium phosphate fertilizer in the base fertilizer, and spray it once each during the seedling stage and the peak leaf growth period, and spray twice during the fleshy root expansion period with a 0.1%-0.25% boric acid solution or borax solution.

In addition to fertilizing, watering is also very important for carrots. Generally, water once after final thinning. During the period from the fleshy root and stem expansion stage to before harvest, water about once every half month. If there is a lot of rain, drain promptly.