At what temperature is cauliflower most suitable for planting?

Cauliflower can be planted twice a year, and seedlings can be raised from mid-June to early February in spring, and the seedling raising time is mostly 1 month. When the weather gets warmer and the temperature is mild in March, you can plant it. If you choose to plant in autumn, raise seedlings in mid-July every year, and the seedling raising period is also one month. The above situation is only suitable for common cauliflower varieties. After all, after continuous cultivation and improvement, there are still many new varieties of cauliflower. Different varieties adapt to different environments and planting time. Be sure to know the planting time of the selected variety before planting.

Second, the choice and arrangement of land.

Because the growth of cauliflower needs a lot of fertilizer, you can choose fields with relatively high fertility in advance. Cauliflower has low requirements on soil, and can be planted in general farmland, but cauliflower will grow more vigorously in fertile farmland. For ordinary fields, it is necessary to supplement a certain amount of fertilizer, and a certain amount of manure can be added when turning the soil, and the application amount is 500-1000 kg per 667 ㎡.

Third, seedling raising and field planting.

The cultivation of cauliflower seedlings is relatively simple, even for novices who have no planting experience, it is very convenient to operate, that is, directly sprinkle the seeds in the seedling cup, control the temperature at 25 degrees Celsius, and then patiently cultivate for one month until the seedlings grow three or four leaves, and then they can be planted. When planting, it should be planted on the prepared flat border, with a width of 1.5m, and two rows can be planted in each border, with a spacing of 30-40cm. 2,500 cauliflower seedlings can be planted per 667 square meters. If the varieties mature earlier, the planting density can be increased, and 500 seedlings can be planted per mu.

Fourth, on-site management

1. Weeding: Pay attention to weeds in the field after planting. When the planting scale is small, manual weeding can be used. If the planting scale is large, herbicides can be used to weed. As for weeding, in order to ensure the air permeability of the soil, you can loosen the soil 1-2 times. The cauliflower in the flower ball formation stage should have sufficient water supply, especially in the weather with high temperature and little rain, otherwise the cauliflower planted without watering is not only small but also unsightly. The amount of water should be moderate. If there is too much water and the temperature is high, not only root rot may occur, but also cauliflower disease may be induced.

2. Topdressing: The growth cycle of cauliflower is relatively long, about 4-5 months, so in order to ensure the good growth of cauliflower, proper topdressing is essential. After 7 days of planting, topdressing can be appropriate, because the seedlings are still relatively small, so the dosage should be controlled, otherwise the seedlings will burn. After one month, compound fertilizer can be applied, so that the root system of cauliflower can grow better.

Verb (abbreviation for verb) harvest

Pay attention to the growth of flower balls when harvesting. Flowers can be picked when they are not obviously swollen. Don't wait until the buds are all open, so cauliflower will be old, which is not only difficult to store, but also bad in taste. The harvest time should be judged according to the growth cycle time of cauliflower varieties, and it is not advisable to pick them too early or too late. When picking, the flower ball can be cut together with the lower stem, and the length is 10 cm.