Broccoli, also known as broccoli, is suitable for growing in cool and cool weather conditions. Its soft texture, unique flavor, and rich nutrition, especially high vitamin C content, is a fashionable high-end vegetable. Due to the high altitude, Lantian County's mountainous regions are cold and humid in summer and have few diseases and insect pests. They are suitable for the growth of broccoli and are particularly suitable for the production of pollution-free broccoli. In recent years, the planting area has expanded rapidly and the economic benefits have been better.

Variety selection, should choose cold, heat, high yield, disease resistance and strong varieties of broccoli. The mountains are mainly cultivated in summer and autumn. Usually, the seeds are sown from mid-June to mid-July, and the main flower bulbs are harvested from late August to November. The planting period of high-altitude areas and early maturing varieties can be appropriately advanced; the sowing period of low-altitude areas and mid-maturing varieties is delayed accordingly. The cultivation points are as follows.

First, seedlings generally use shading for shading and raising seedlings, with a seed amount of 20 grams per 667 square meters. When growing seedlings, choose a plot that has not been planted with cruciferous vegetables within 3 years for the seedbed. Take fertile topsoil, decomposed farmyard manure, and loose materials (usually sand), prepare nutrient soil in a ratio of 1:1:1, add 100 grams of carbendazim to each soil, etc.

Nursery beds are generally 7 meters long and 1.3 meters wide. When doing the bed, pay attention to stepping on it, leveling it, making it 10cm. Before planting, planted water was poured first. After the water infiltration, the seeds were evenly sprinkled on the surface of the bed. After sowing, the soil was covered with 0.5 cm. Shade nets or pine branches were used for shading. Before the emergence of the bed soil to keep moist, until most of the seedlings unearthed, gradually remove the shade. After that, keep the bed surface dry and wet. Watering should be done in sunny afternoons. Watering can be used. When the seedlings have 5-6 true leaves, strong seedlings can be selected for colonization.

Second, the establishment of broccoli bogey continuum, the best choice within 3 years did not plant cruciferous crops of land, requiring cultivation of high dry terrain, soil organic matter content is high. 10-15 days before planting, the soil was deep-sloped, and 2,000 m2 of high-quality rotten manure, 20 kg of superphosphate, 100 kg of plant ash, and 1 kg of boric acid were applied per 667 m2 combined with site preparation. Generally, the planting density is 2500-3000 plants per 667 square meters, and early maturing varieties can be properly planted. Medium-maturing varieties should be paid attention to sparse planting. Planting seedlings should not exceed 35 days.

Third, field management

1, top dressing can be used to thin fertilizer with thin manure after dressing. During the growing period, the crop is usually top dressing 3 times. The first time after planting 20-30 days, when the plants have 10-12 leaves, topdressing 6 kg of urea, 4 kg of potassium chloride, and 10 kg of superphosphate per 667 m2. When the plants have 17-20 leaves, they enter the early appearance period of the curd, and when applying fertilizer, 6 kg of urea, 5 kg of potassium sulfate, or 15 kg of compound fertilizer can be applied per 667 square meters. After entering the harvesting period, fertilizer should be applied lightly once every harvest. Generally, 5 kg of urea can be topdressed for every 667 square meters. After the flower bulb is harvested, it should be re-applied with topdressing for 1 time. The amount of fertilizer is the same as that of the second top dressing to promote the growth of lateral flowers.

2. The irrigated broccoli should keep the soil moist during the whole growth period, especially during the development of the flower bulb. The soil should not be too dry. The rainy days of the growing season should be promptly drained. Summer irrigation should pay attention when the water is cool and cool.

3. Before cultivating and brushing the buds, seal the cultivator in time after catching fertilizer or after the rain. Cypriot-type varieties should often wipe off lateral buds during the growth period of cypriot balls. The top flower type and side flower type can choose to leave 4-5 robust lateral branches, and the rest should be erased.

IV. Pest Control

1. Diseases mainly include black rot and downy mildew, and should be controlled by non-pollution agents. Prevention and treatment of diseases should be noted that the spraying of pesticides at the beginning of the disease, spraying after spraying is generally no longer.

2. Insect pests are mainly aphids and cabbage caterpillars. Control methods In addition to selecting the appropriate agent, the control of aphids can be set in the field yellow plate yellow, yellow plate can be set uniformly 28 per 667 square meters.

V. Timely collection of broccoli has a short harvest period and must be standardized and harvested in time. Generally, the buds on the flower buds have the size of rice, do not spread the ball, do not bloom, the buds are compact, and the bulbous stems have not yet been elongated. When harvesting, the flower bulbs and the ball stems with 3-4 leaves will be cut off together. The tender stems should not be too long, leaving only 7-8 cm.

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