Production and control methods of heterochromatic flower bulbs in broccoli
The purple bulb is an abnormal phenomenon that forms a red-white uneven purple mottled on the surface of the bulb, which is caused by the influence of low temperature during the development of the bulb. Prevention and control measures: strengthen cultivation management during the heading period, and carry out short-term plastic film insulation in the arch shed before the arrival of low temperature weather or before the sudden drop in temperature, so as to avoid the harm of low temperature. Second, the yellow flower bulb often turns yellow in the production process of broccoli, which seriously affects the commodity value of broccoli. The rosette is mainly formed by strong sunlight, especially the early-maturing varieties cultivated in autumn. Prevention and control measures: when the diameter of the flower ball grows to 3 cm, the 1-2 outer leaves close to the flower ball can be gently bent to cover the flower ball to avoid strong sunlight. Third, when the temperature of the brown bouquet drops sharply below l ℃, the bouquet is easy to turn brown. Prevention and control measures: strengthen cultivation management during the heading period, and carry out short-term plastic film mulching and heat preservation in the arch shed before the arrival of low temperature weather or before the sudden drop in temperature, so as to avoid the harm of low temperature.
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Cultivation techniques of broccoli
Cabbage flower also known as cauliflower stem, Italian broccoli, broccoli, cauliflower wood, cauliflower tender stem, etc., cabbage for a variety of one or two annual herbs. Green flowers are eaten. It has good flavor and high nutritional value. Fresh green crisp texture, refreshing taste, has been the majority of urban and rural consumers...
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Key points of water management in broccoli
In the slow seedling stage, the seedlings should be watered in time to promote the return of seedlings. The water should be properly controlled after survival, which is beneficial to the depth of the root system. In the middle and later stages of growth, that is, the peak growth period of leaf clusters and the period of flower bud development, the water demand is larger. In case of drought, it should be watered in time, usually once every 4-5 days, and the border surface can be covered with straw or weeds to reduce water evaporation.
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