When is the latest carrot planting time?

Carrots are generally sown in summer and autumn and harvested in autumn and winter. According to the characteristics that the seedling stage needs high temperature, the root hypertrophy period requires cool, and the climate and varieties of different regions arrange the sowing time, so that the seedling stage is in the high temperature season, and the root hypertrophy period is in the cool season. In order to supply fresh carrots in summer, early-maturing varieties can be sown in spring, and the seedling stage should avoid the long low temperature period and prevent the seedlings from bolting in advance through the vernalization stage.

Planting time of carrots

The best time for carrot sowing is between Lesser Heat and Greater Heat, but in recent years, due to market demand, spring sowing carrots have also appeared. Spring sowing is early, usually from late February to early March!

Carrot planting temperature

Carrot is a semi-cold-tolerant vegetable, the suitable temperature for germination is 20-25 ℃, the suitable temperature for growth is 18-23 ℃ in day and 13-18 ℃ at night. Too high and low temperature are disadvantageous to growth, and carrot root system is well developed. therefore, deep ploughing the soil plays an important role in promoting root growth and fleshy root fertilizer.

Carrot planting soil

The soil should be deep sandy loam, and PH5-8 is more suitable. The soil moisture is required to be 60-80% of the maximum soil water holding capacity. If there is too much water in the early growth stage and the aboveground part grows too vigorously, it will affect the inflated growth of the fleshy root; if there is not enough water in the later growth stage, the straight root can not be fully expanded, resulting in a decrease in yield. Too sticky soil or the application of immature base fertilizer will hinder the normal growth of fleshy roots and produce abnormal roots.

Management of carrot seedling stage

When the seedlings had 7-8 leaves, the seedlings were hoed and squatted deeply while the soil was wet, which promoted the extension of the main root and the development of fibrous root, and inhibited the excessive growth of the leaves. After 10-20 days, when the fleshy root was obviously dilated, it began to be fully watered and the soil was often kept moist. The application of ammonium sulfate, calcium superphosphate and potash fertilizer per mu is 2kg, 3kg and 2kg per mu, respectively. When the seedlings are fixed, the seedlings are watered with 10 kg of diammonium phosphate per mu and 3 kg of potassium chloride, which promotes the seedlings to thrive and grow rapidly. At the beginning of fleshy root growth, quick-acting organic liquid fertilizer or diammonium phosphate, potassium chloride and so on were applied. Spring carrots are harvested 90-100 days after sowing, while autumn carrots are harvested and stored before the advent of severe winter.

OK, after watching the planting time of carrots, let's take a look at the planting techniques of carrots.