Causes of the latest cabbage bolting in advance

Cabbage (Brassica oleracea L.) is a herbaceous plant belonging to Cruciferae family. It has a wide distribution in the south and north of China. Cabbage often encounters early bolting phenomenon in planting, mainly because of premature organ formation, resulting in flower bud differentiation. It has a great impact on the yield of cabbage, and the planting efficiency of growers will also decrease. So what is the cause of cabbage early bolting? Let's take a look below!

1. Seedling size

The reason of cabbage early bolting is seedling. There are two kinds of seedling size: calendar seedling age and physiological seedling age. When planting the same variety, if the calendar seedling age is consistent, then the growth rate is faster. That is, the physiological seedling age is easy to be affected by low temperature and vernalization. Under normal circumstances, the vernalization standard of seedlings is generally around 6 leaves. Among them, when the leaf area is 7 cm and the stem thickness is about 0.5 cm, the bolting rate of seedlings is relatively high, so we should pay attention to controlling the size of seedlings and reducing the phenomenon of early bolting.

2, seedling temperature

Temperature also has a direct impact on the growth of seedlings. If the temperature is higher in the seedling stage, although the growth rate of seedlings is accelerated, it is also easy to form large seedlings. If the seedlings are too large, it will increase the probability of vernalization, so it will also increase the rate of bolting. Therefore, when we plant cabbage, we should adjust the sowing time reasonably according to the seedling mode to ensure that the temperature is within the suitable growth range of cabbage. By controlling the temperature to control the size of seedlings, among which cabbage seedlings, the temperature maintained at about 15 degrees, it can effectively reduce the rate of bolting.

3. Planting time

Planting time was also one of the main reasons for early bolting of cabbage. If early planting, seedlings are prone to late spring cold phenomenon, delay the slow seedling time, increase the rate of bolting. However, it should not be planted too late. If it is planted too late, it will prolong the growth period of cabbage. Unable to form large balls in suitable environments, they eventually become semi-mature plants. Therefore, we should reasonably control the planting time according to the planting area. For example, when planting in the north, it should be planted appropriately late, and on the contrary, it should be planted appropriately early in the south. Can effectively avoid or reduce cabbage early bolting.

4. Climatic reasons

One of the final causes of cabbage early bolting is that the climate is not suitable. If it is an early-maturing variety of cabbage, when planted in winter, the temperature is high, it will accelerate the growth of seedlings, and after entering spring, there will be late spring cold. Therefore, it is easy to cause cabbage early bolting. However, when cabbage is planted in winter in the south, it will inhibit the growth of cabbage because of excessive autumn and fast winter time. It is easy to overwinter before the ball is formed, and then enter the spring long day climate, it is easy to appear early bolting phenomenon. Especially in warm winter and cold spring, the probability of bolting is greater.

The above is a brief introduction to cabbage early bolting. There are many reasons for cabbage early bolting, we mainly focus on prevention, strengthen management from all aspects. It can effectively reduce the phenomenon of browing. Today's introduction is here, this article is for reference only, I hope to help everyone oh!