Reasons of Spring Chinese Cabbage Bolting before Mature and Ways to Prevent.

With the continuous improvement of the consumption level, cultivation of spring cabbage has a large scale. The bolting before maturity will decline the quality and marketability of the Chinese cabbage and bring some economic losses to the farmers. First, the cabbage can complete the process of verbalization in the low temperature of 2-10℃ during 12-15days. In less than 2 ℃, due to weak divisin of the cells, verbalization is also slow. But in 18-20 ℃ of high temperature, 14 hours of sunshine can quickly promote the cabbage to bolt and bloom and lose the economic price of Chinese cabbage.
Second, the differences between the varieties. If varieties are not sensitive to the low temperature, the rate of early bolting will be small. Third, climate reasons: The unstable temperature in the spring ill make the Chinese cabbage go through the process of ventilation easily and high temperature and long sunlight in the daytime will lead to early bolting. 5, mismanagement of temperature.
Prevention measures:
1, select outstanding varieties with good resistance to low temperature, early maturity, high sense of winter and so on.
2, grasp the appropriate sowing time: Too early or too late sowing time is not suitable.
3, strengthen temperature management. It is necessary to prevent coldness and keep moisture of the fields. Keep the temperature more than 13 ℃ in the seedling stage to avoid early bolting.
4, strengthen cultivation management.Strengthen the management of water and fertilizer to raise the temperature and avoid early bolting to reduce economic losses.