Causes and control methods of early flowering of cauliflower

In recent years, with the growing planting area of cauliflower, the phenomenon of early flowering of cauliflower is becoming more and more serious. the phenomenon of early flowering of cauliflower will make it lose its commodity value, seriously affect the yield and income, and bring huge economic losses to farmers. So what is the reason why cauliflower blossoms early? How to prevent and cure it? Let's take a look.

What is the early flower?

Cauliflower is a green vernalization crop, its seedlings only grow to a certain number of leaves, a certain stem diameter, and then encounter low temperature, after a certain number of days, can pass vernalization, but the vernalization temperature and plant size of different varieties are different. Through the vernalization of cauliflower, if it can not meet the conditions of its vegetative growth, its reproductive growth will be stronger than vegetative growth, resulting in many small plants to grow small florets, which is early flowering.

Second, the reason

1. Abnormal climate

In recent years, the phenomenon of warm winter in China is serious. High temperature makes cauliflower overwintering with small seedlings grow faster than in previous years, and warm winter will shorten autumn, resulting in slow growth of cauliflower after planting. In early winter, the stem diameter and leaf number of cauliflower reached the vernalization requirements, making cauliflower overwintering cauliflower vernalization in advance, to the end of winter and early spring, cauliflower leaves did not grow up but appeared prematurely.

2. Improper cultivation and management

Cauliflower should survive the winter with small seedlings, enter the slow seedling growth period after planting slow seedlings in November, and basically stop after December. Early spring is to strengthen fertilizer and water management, promote its growth, and make vernalization complete. If it is not properly managed before overwintering, it will cause overgrowth, resulting in large plants overwintering, leading to vernalization in advance, and finally early flowering.

III. Prevention and control methods

1. Sowing seeds at the right time

Before sowing, cauliflower with young seedlings overwintering should pay attention to the weather forecast. if the forecast winter temperature is too low, in order to ensure that it is planted in the field before freezing, it can be sowed appropriately in advance, and if the forecast is a warm winter year, it must be sowed late.

2. control the growth of seedlings.

During the period of cauliflower seedling cultivation, the method of squatting seedlings can be adopted to prevent the seedlings from growing. If the temperature continues to be on the high side and the seedlings grow too fast, growth inhibitors such as dwarf can be sprayed to inhibit the growth of seedlings. The method of transplanting seedlings can also be used to inhibit the growth of seedlings, because pseudo-planting can destroy the roots of seedlings, so as to inhibit the growth of aboveground parts of seedlings and postpone the vernalization time of seedlings.

The above is the introduction of the causes and control methods of early flowering of cauliflower. I hope it can help you. If you want to know more about it, please follow us.