In recent years, with the needs of the market and the development of protected cultivation, the production of broccoli has gradually grown from the cultivation of spring and autumn to the anniversary. According to the harvest time of the main flower of broccoli, the annual cultivation of broccoli can be divided into the following production seasons for production: 1. The main flower bulbs in spring are harvested mainly in April-May, and the cultivation methods used are improved. Yangshuo, greenhouses and open field cultivation. Suitable varieties are Bishan, jasper, Haezi, early maturity 26, seasonal green 96, oasis 807, landscape and so on. Seedlings are planted in a greenhouse or in a greenhouse, from late December to late February, and from early February to late March. 2. The production of main flower bulbs in summer is harvested from June to August. Among them, the harvest in the first half of June is open field cultivation. In late June to August, it is protected from high temperature and rain, and the shade net is used for cultivation. Varieties should use early green varieties. Usually from March to April sowing, planting from late April to early June. 3, the main production of autumn flower harvest is 9-11 months, of which 9-10 month harvest for open field cultivation, November harvest using greenhouse cultivation. The open field cultivation was planted from late June to early July and planted from the end of July to the beginning of August. The greenhouse cultivation was planted in July and planted in August. Should use jasper, Bi autumn, early maturity 26, landscape, green belt, oasis 807, green 96, green ridge and other varieties. 4. The main production of winter flower bulbs is harvested in March of the 12th-March, mainly using solar greenhouses and improved Yangshuo cultivation. Harvested in December, sown in mid-August, and planted in late September. Since the growth of leaf clusters and flower bulbs is in winter, the outside temperature is not very high, and it is better to adopt a modified Yangshuo cultivation with lower cost; Harvested and marketed, leaf clusters and flower bulbs grow in cold winters and must be cultivated in a solar greenhouse with good insulation properties. They are usually planted from late September to mid-November and planted from late October to late December. Green ridge, landscape and other species should be selected.
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