When will Brussels sprouts be planted

Cabbage needs to be planted according to the characteristics of the variety and the mode of cultivation. There are mainly early-maturing varieties in Shanghai, which are sown in late July and early August every year, and early and medium-maturing varieties are selected in protected areas, and sown from late July to early September.

Cultivation techniques of Brassica oleracea L.

1. Land preparation and planting

Medium fertility soil should be selected for cabbage colonization, 5000 kg of rotten organic fertilizer and 25 kg of special compound fertilizer for vegetables should be applied per mu, ditches should be built with a width of 90 cm, a ditch of 30 cm wide and a depth of 25 cm, and a waist ditch every 15 meters. The ditch is 25 cm wide and 35 cm deep. There are 2 rows of seeds in each bed, the distance between plants is 45 cm, and 2000 plants are planted per mu.

2. Fertilizer and water management

Watering and setting up root water in time after planting, irrigation in time after slowing down seedlings, promoting plant growth, and replenishing water in time after soil water shortage, so that the soil water content can be kept at 70% and 80%. The growing period of cabbage is long, in addition to applying sufficient base fertilizer, topdressing is needed for 4 times.

3. Ploughing and weeding

Because the main root of Brassica oleracea is underdeveloped and the soil layer is shallow, it is necessary to cultivate soil in the rhizosphere. The border surface should be watered many times after planting, and the border surface should be ploughed 3-4 times in combination with weeding, loosening soil and rhizosphere soil cultivation to loosen the border surface, promote the growth of seedling and root system, and prevent plant lodging from affecting the formation and expansion of bud balls.

4. Shaping and pruning

When small bud balls are produced in the middle of cabbage stem, the lower old leaves can be removed to facilitate ventilation and light transmission in the field, promote bud ball development and harvest bud balls. At the same time, the top was removed at the right time, which inhibited the upward growth of the plant and reduced the nutrient consumption, which was beneficial to the growth of the bud ball.

5. Harvest and finishing

When the bud ball is tight and the bud ball is waxy, it can be harvested. The early-maturing varieties began to be harvested 90-100 days after planting, and the middle-maturing varieties began to be harvested 105-115 days after planting. The harvest time of Brussels sprouts is long, and it is generally harvested in Shanghai from December. if the fertilizer and water are proper, the cabbage can be harvested continuously by the end of February of the following year if certain heat preservation measures are taken in winter.