Planting techniques and Regeneration of broccoli and Prevention and Control of Edible Fungi Diseases

Broccoli is a 2012 herb, native to the eastern coast of the Mediterranean Sea. At present, broccoli is cultivated in both the north and south of China, and has become one of the main vegetables in daily life. Now the agricultural knowledge network introduces the planting technology and regeneration method of broccoli as follows. Cultivation techniques and regeneration methods of broccoli

1. Soil preparation and fertilization: broccoli requires more and more nutrients, but its root system is relatively shallow. Therefore, it is required to plant in the land of fertile soil, water conservation and fertilizer conservation. Attention should be paid to the application of base fertilizer. Generally, 100 kg of organic fertilizer, 10 kg of urea, 25 kg of compound fertilizer (15% of nitrogen, phosphorus and potassium) and 2 kg of borax are used as base fertilizer for every 667 square meters (1 mu). The cultivated land is raked flat and ditched and fertilized, and the width of the ditch and ditch is 50-70 cm.

2. Seedling raising and transplanting: the sowing date of broccoli depends on the characteristics of the variety, the length of the growth period and the climatic and environmental conditions of the planting area. The spring in Qingdao is generally from late January to early February. The two-layer film is used for raising seedlings in greenhouse in spring. the ground temperature is required to be 25 ℃ when the seedlings are emerged. after emergence, the temperature in the greenhouse is 18-20 ℃, the seed consumption is about 15 grams per 667m2, and the seedling age is about 40 days. The seedlings began to be planted in the field with 4-5 leaves, and a small arch shed was needed in the field. Autumn sowing should raise seedlings in the open field in early July, cover the sunshade net after sowing, remove the sunshade net in time after emergence, and spray to prevent sudden disease and underground pests. The amount of seeds used for raising seedlings in autumn may be slightly more than that in spring. The seedlings can be transplanted to the field at the age of 25 days with 4 leaves and 1 heart. The planting density is 2700-3000 plants per mu in spring and 2000-2500 plants per mu in autumn.

3. Field management:

⑴ broccoli in spring should punch holes and let out the wind at the right time according to weather changes, or take off the small arch shed. After uncovering the film, weeding should be done in time. Depending on the situation, medicine can be applied to prevent insects and diseases, and fertilizer should be topdressing. Generally, 40 kg of ammonia sulfate and 10 kg of potash fertilizer are applied every 667 square meters.

After ⑵ autumn broccoli is planted, it should be watered in time to return seedlings, weeding on time, and topdressing combined with mid-term ploughing. Ditching to cultivate the root soil, drought and waterlogging prevention, and careful observation, timely control of diseases and insect pests, timely pruning and removal of lateral branches. Erasing the thin and weak lateral branches can save nutrients and provide the main branch for the growth of the bulb.

4. time management and harvest of regenerated cultivation: before top flower harvest, according to the soil conditions and the growth of side branches left during pruning, a proper amount of topdressing was carried out 7-10 days before the main flower bulb harvest, so as to harvest larger lateral flower heads, prolong the harvest period and increase the yield. It is mainly similar to the main flower bulb, generally 1-2 lateral flower heads can be left per plant, and 4-6 lateral branches can be left according to the requirements of quick freezing. According to our experimental results, the income can be increased by 200 kg per 667 square meters, and the high-quality flower rate can reach about 30%.

Broccoli must be picked at the right time. Harvest too early, buds are not fully developed, can not meet the finished product standards; harvest late or in case of high temperature, there will be scattered flowers and may turn yellow, we should pay attention to water supply. If the quality becomes worse, it will lose its commodity value.

According to the quality requirements of imported broccoli from abroad, it is best to have uniform and compact bud particles, non-scattered flowers, bright green color, no full sky star, bulb top to bulb height of 11-13 cm. Proper watering before harvest can not only increase the yield, but also improve the quality of goods.

The above is the introduction of broccoli cultivation techniques and regeneration methods, if you want to know more, welcome to the agricultural knowledge network to inquire more information.