Cauliflower, also known as cauliflower, is a variant of cabbage. The broccoli is a white flower ball, but there are also broccoli and alfalfa. From the growth period, it is divided into early, middle and late varieties. Early-maturing varieties such as Swiss snowballs and Dutch early snowballs are excellent varieties for cold and early maturity. Late-maturing varieties such as Japan's snow-capped mountains and Lanzhou big snowballs can only mature after more than three months of planting.
Cauliflower is a semi-hardy-tolerant vegetable. The suitable temperature for fertility is about 20 °C. 15 °C-25 °C is conducive to the early growth stage, and the temperature is low and the humidity is high.
Protected field cultivation is generally carried out in autumn, using Yangshuo seedlings. Before seedling, first pour the bottom water, then sprinkle a thin layer of fine soil, evenly sow; after sowing, cover the fine soil 0.5 cm-1 cm, cover the film on the surface, and then emerge after 1 week. If the area is planted in September and October, it is necessary to pay attention to the ventilation and prevention after the emergence of the seedlings. In early November, the grass is covered with grass and cold after the winter.
The seedlings are divided into 2 pieces of -3 pieces of true leaves, and the seedlings are separated by 10 cm, or 5 cm of 5 cm of nutrient. After the seedlings are poured, the water is poured once, the seedlings are planted after the seedlings are slowed down, and the seedlings are regenerated 7 days to 10 days before the planting, and the ventilation area and ventilation time are gradually increased, so that the seedlings can endure the low temperature below 0 °C to adapt to the environment after planting.
The row spacing of colonized plants varies from species to species. Early-maturing varieties generally use 4000 cm 50 cm of plant spacing and 4,000 seedlings per mu; the late-maturing varieties generally have a distance of 60 cm - 70 cm and 50 cm - 60 cm.
In the 15 days to 20 days before planting the seedlings, the shed will be lifted to increase the ground temperature, and the local temperature can be stabilized at around 5 °C. Before planting, fertilize the land first, apply 5,000 kg of organic fertilizer, 25 kg to 30 kg of phosphorus and potassium fertilizer. When planting, it should not be too deep or too shallow. In order to keep warm and prevent cold, reduce the humidity in the shed, use high ridge cultivation, cover the mulch immediately after planting, and use drip irrigation before it is covered.
After the planting, in order to promote the slow seedling, the temperature of the shed should be kept above 20 °C, and the ground temperature should not be lower than 5 °C. After 7 days to 8 days of slow seedling, pay attention to ventilation, and then re-cast a slow seedling water according to the lyrics. Afterwards, it can be flexibly controlled according to the situation. It can be re-watered once a week to keep the soil moist, and apply 30 kg of nitrophosphate fertilizer/ 1 time - 2 times in acre, ventilation should be carried out when it is hot, and the room temperature of 17 °C should be maintained as much as possible, which is conducive to the formation of flower balls.
When the diameter of the flower ball reaches about 7 cm, it should be covered with the outer leaves immediately, or the leaves should be carried out to prevent strong light from shining and the flower ball is well developed. After 15 days of flower ball formation, the flower ball has grown sufficiently to be harvested. The harvest is delayed, the flower ball is easy to loose, and the product quality is lowered. The late-maturing variety of flower bulbs has a longer growth time, and the covered leaves are easy to dry, and should be replaced immediately to ensure the quality of the flower balls. In the autumn, the cauliflower can be removed from the flowering ball of the 3 cm-6 cm cross-stalk after the cold weather, and the planting can be continued at a temperature of 5 ° C. The flower ball can continue to grow, thereby prolonging the supply period.
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