How to prevent the quality deterioration of summer cauliflower

In the production of cauliflower in summer, the deterioration of quality is often caused by the influence of environmental conditions and improper cultivation measures. As a vegetable farmer, I have accumulated some experience in the prevention and treatment of common cauliflower quality deterioration in the cauliflower planted for many years. Now I introduce it to everyone for reference.

Cracked flowers and black heart cracks, ie, the inner part of the flower bulb is cracked, and the flower buds are hollow. There are often scattered brown spots on the surface of the flower bulb. The bitter taste of the food, the leaflets around the flower bulb are not well developed, the leaf margin is curled, and the petioles occur. Small cracks are mainly caused by the lack of boron in the soil. A lack of potassium in the soil can easily cause cauliflower black hearts. Control methods: Before the cauliflower colonization, the soil was treated with NPK fertilization, organic-inorganic compound fertilizer was promoted as the base fertilizer, and borax or boric acid 0.25-0.5 kg was applied per mu of base fertilizer. During the growth period, when the symptoms of boron deficiency or potassium deficiency were found in the plants or flower bulbs, 0.2%-0.3% borax solution or 0.2% potassium dihydrogen phosphate solution was sprayed on the leaves and sprayed once every 5-7 days. 3 times.

Scab flower buds and flower branches develop rapidly, resulting in scattered flower balls. Reasons for formation: During the ball-bearing period, the temperature is too high, the bulb swelling is inhibited, and the flower buds and flowering branches grow rapidly. After the elongation, they cause scattered flowers; after the flower bulbs are fully grown, they are not harvested in time. Control methods: appropriate sowing, the growth period of the flower bulbs arranged in the daily average temperature of 15 °C ~ 23 °C in the month (that is, the spring and autumn cultivation is better) to avoid the impact of high temperature during the ball; in the full length of flower balls Into the harvest when the edges have not yet been dispersed. Conditional shade nets can be covered to reduce the impact of high temperatures during balling.

In the production of yellow-flowered cauliflower, the phenomenon of yellowing of flower bulbs often occurs. It is mainly due to the formation of flower bulbs by strong light. Control method: When the flower bulb grows to 3 cm in diameter, it can gently bend 1 to 2 outer leaves close to the flower bulb to cover it on the flower bulb. The condition can cover the shade net. It is also possible to bundle up the upper ends of several leaves in the center of the plant with straw, etc., and wrap the leaves around to avoid direct sunlight.

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