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扦插繁殖紫背天葵的茎节部易生不定根,利用这种特性可进行扦插育苗。全年均可扦插,但多在春季2-4月、秋季8-10月进行扦插容易成活。于4月上中旬在保护地内扦插育苗,育苗床可用细沙土2份、草炭1份混合均匀后铺垫,也可用细碎疏松的一般土壤做床,但不宜施肥。最好采用72穴塑料盘或6厘米×6厘米营养钵,以草炭、细沙为基质。
Cutting propagation purple sunflower stem prone to adventitious roots, the use of this feature can be cutting propagation. Can cuttings throughout the year, but more in the spring 2-4 months, autumn 8-10 months cutting easy to survive. In mid April on the cuttings in the protected area nursery, nursery bed available fine sand 2, peat 1 mixed evenly bedding, but also with fine loose general bed soil, but not fertilization. The best use of 72 plastic pallets or 6 cm × 6 cm nutrition bowl to peat, fine sand as a matrix.