Why do cabbages twitch in early spring?
Recently, a number of vegetable farmers such as Yang Peng of Yihe Zhuang Township of Cangzhou City asked: In the early spring, the planting area of ​​Chinese cabbage is increasing year by year, and the planting efficiency has increased. However, the phenomenon of bolting and flowering often occurs during the planting of Chinese cabbage in early spring, which has a serious impact on production. . Why do you twitch? Inappropriate variety. At present, Chinese cabbage varieties are mainly dominated by Korean and Japanese varieties in the early spring. In the production process, many vegetable farmers do not know enough about early spring cabbage varieties. They often choose their varieties based on experience or following the trend. Sometimes they will get good varieties grown in summer and autumn to plant in early spring, often due to the strong heat resistance and cold resistance of summer sowing varieties. Poor sex, causing early convulsions. Autumn cabbages are mostly late-maturing varieties, although their ability to resist seizures is strong, but due to the long growth period, it is bound to cause high temperature in the late spring and can not form normal leaf spheres, making Chinese cabbage poor. Sowing period is not reasonable. Due to the interests, some vegetable farmers mistakenly believe that early sowing of Chinese cabbage can be used in the morning market, and blindly sowing early. Gu'an County is the main producing area of ​​Chinese cabbage in early spring. Every year, vegetable farmers sow and cause Chinese cabbage convulsions. Some vegetable growers once sowed in the "spring of the year" in the previous year succeeded in sowing, so that they would be sowed early in the "big winter" season next year. Since the temperature is low, the result would be convulsions and cause losses to production. Management factors. Driven by interests, some farmers who originally planted grain turned to Chinese cabbage planting in early spring. However, there are still many problems in management: First, neglecting the insulation work during the seedling stage. Cabbage is a vernalized vegetable with seed germination, which means that after the seeds of Chinese cabbage begin to germinate, the vernalization process can be completed after the germination period, seedling stage, and rosette period are affected by the low temperature for a certain number of days. Chinese cabbage is weak in winter, and the requirements for vernalization temperature are not strict. Usually, the vernalization process can be completed within 10-15 days at a temperature of 2°C-10°C. Once through the vernalization process, a long daylight of 14 hours at a temperature of 18°C ​​to 20°C can quickly induce flowering and lose the economic value of cabbage. Must strengthen management, cold insulation, so that the temperature during the seedling period above 13 °C, so that the spring conditions and time of vernalization of Chinese cabbage is not established. Wrong management experience of autumn Chinese cabbage for early spring planting, ignoring the fact that the growth time of Chinese cabbage in early spring is shorter than that of autumn Chinese cabbage. It is not suitable for timely watering after planting, resulting in poor nutrition and poor growth. The ball is also very easy to cause early bolting and flowering. Pest control is unfavorable. Some vegetable farmers believe that early spring Chinese cabbage is basically free from pests and diseases and does not require prevention and treatment. Once pests and diseases occur, vegetable farmers often miss the best timing for prevention and treatment. In addition, the lack of timely control or improper use of pesticides may lead to reduced yields and even affect growth. Convulsions occur. Varicella Vaccine,Intranasal Varicella Vaccine Injection,Varicella Vaccine Final Bulk,Varicella Vaccine Live Changchun BCHT Biotechnology Co. , https://www.ccbcht.net