1. Breeding methods: There are two kinds of propagation methods for broccoli, namely sowing seedling propagation method and cutting seedling propagation method. (1) Sowing and raising seedlings: South China can be sown at any time from July to January. Summer high altitude mountain cultivation, the appropriate period of sowing is from late June to early August, the suitable period for planting is from mid-July to late August, the harvest period is from late August to early October. The best sowing date is from mid-September to early October. The planting period is from mid-October to early November and the harvest period is from mid-December to early January. Fostering strong seedlings: The seedbed should be set in a plot where the soil is fertile, loose, and drainage and irrigation are convenient, and the former crop is not a cabbage vegetable. In addition, in the cold season nursery, should also have sunny, warm and other conditions, the use of greenhouses, hotbeds, Yangshuo nursery; in hot summer, but also should have the terrain Gaozao, cool ventilation and other conditions, the use of shade nursery seedlings. (2) Cuttage seedlings: Cuttings should be carried out in hot and hot seasons. Sandy loam or sandy soil with well-drained sand should be used to set the cutting bed. During cuttings, select robust lateral branches that have not yet appeared buds from the superior plants, cut them to about 3 cm in length, and retain only 1 to 2 leaves of the apex. The rest of the leaves are removed and inserted into the soil at a distance of 3.3 cm. About 2.3 cm deep. Immediately after the planting, immediately irrigate the soil to make the soil fully wet; once the soil surface is white, immediately apply water to keep the soil moist to facilitate root growth.
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