High-yield, high-yield cultivation techniques for broccoli

First, the cultivation season: generally can be cultivated in spring and autumn, autumn in mid-July-September, sowing, harvest in early October-February; spring cultivation in December-January sowing, harvest in late April-early May. Most of the city's autumn cultivation.
Second, sowing seedlings: Sowing seedlings is the key to obtaining high yield of broccoli. The suitable sowing period in the city is from the end of July to September. Premature sowing is prone to "cat's eye" physiological phenomenon, too late sowing, and the low temperature at the late growth stage will affect the yield and quality. Seedbed should choose high-desert, well-drained, organic-rich loose soil, with 12.5-15g per acre. Due to the high price of seeds, it is possible to use seedlings for seedlings or on-demand seedlings in a nutritious manner, and it is also possible to use seeds that are similar in size to fry the other seeds of broccoli after being mixed and spread according to the experience of several years. Seedlings, such as vegetables, generally do not need fertilization; bed soil surface layer must be fine, soaked before sowing water, soil protection, sowing point depth of about 0.5cm, sowing can be used to control pyrethroids underground pests; to cover after sowing Fine soil covered with acupuncture points is appropriate. Then cover the film to retain water. The film should immediately be covered with thick straw, peanut tees or corn sticks, etc. It is advisable to cover the thickness so that the inside of the film does not generate heat. Immediately after the seeds germinate, the cover is removed (usually no more than 2 nights). . After the emergence, a small shed covers the shade net to cover and cool the temperature. Generally, it is covered between 8am and 5pm. The rest of the time will be removed. Then the coverage time will be gradually reduced. The time will be gradually reduced until 3-4 days before the planting to remove the seedlings to prevent leggy. In case of rainstorm, cover the film in the seedbed shed to avoid rain and lodging. When the seedlings are 2-3 leaves, they should be planted. During the seedbed stage, the damage of cabbage caterpillars and tawny scorpions should be prevented. It is possible to use 1500 times of Ciclospora and 1500 insecticides. Times (10mm diluted with water 30 pounds) prevention and treatment.
Third, the preparation of soil preparation: in general, before planting ditching basal fertilization, Mushi decomposed organic fertilizer 1500kg and compound fertilizer 20kg or superphosphate 20kg + compound fertilizer 20kg + potassium chloride 10kg, boron-deficient areas can be applied 1kg borax, before the fertility More than enough fields should be applied in moderation. When the seedlings age 25-28 days, 5-6 leaf plants are planted. The planting method is 2 lines of 1.3 m in width or 2 m in width (even in the ditch). The spacing is 45-50 cm. Mu density 1800-2000 strains, the factory requires the collection of small flower balls can be increased density, 2000-2300 per acre. After planting, the roots were stagnated with clear water, and the live plants were lightly applied. Mushi urea was about 2.5 kg. In the case of long-term arid climate during planting, not planting the land for planting will help protect the seedlings and live trees. During the planting, a small amount of superphosphate is applied in the hole, and the amount of mu is about 20kg. Before plant closure, the ditch is applied to compound fertilizer 20— 25kg.
Fourth, do a good job in field management: broccoli requires warm, slow seedling to maintain soil moisture, especially in the vigorous growth of leaf clusters and bud development period should ensure adequate water, in case of drought should be timely watering, the general interval 4 - Once a day, drain the water in case of rainy year to prevent water accumulation in the field. The seedlings in the early growth period are poor, and the top dressing should be applied lightly. Generally, 5 kg of urea is applied per mu. During the budding stage and the flower bulb hypertrophy stage, topdressing is performed according to the growth conditions. Partial application of nitrogen fertilizer is not suitable. The effect of applying compound fertilizer is better. The amount of mu is 10–15 kg. . The broccoli plants are tall, combined with fertilization before closing the line for timely cultivating and weeding, and soil cultivation to prevent lodging; broccoli has strong lateral branching ability. Before the main flower bulbs are swollen, combined with cultivator weeding soil to remove side branches, the soil can not be too high to avoid root suffocation Brownish rot.
V. Pest control: The main diseases are seedling stage blight and late downy mildew, black rot, which can be controlled with 75% chlorothalonil 1000 times solution or 100-120 ml/L agricultural streptomycin. Insect pests mainly include cabbage caterpillars, aphids, diamondback moths, and tawny nightingales. They can be 2,000 times killed by 2.5% enemies, 1500 times by Sitabao, and 1500 times by chlorate (10mm diluted with water 30 pounds).
6. Harvest: According to the market and the processing plant, timely harvesting of the different specifications of broccoli is required. The florets are usually harvested at a ball diameter of 12-14cm and a single ball weight of about 150g. The bulbs are generally harvested at a weight of 400g. Flower ball up to 500-600g. (reproduced)

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