Study on softwood cutting of feed tetraploid Robinia pseudoacacia

Full-light and water-spray technology was adopted to improve the rooting rate of tetraploid Robinia pseudoacacia.Softwoods of tetraploid Robinia pseudoacacia and fast growing Robinia pseudocacia from Hungary were treated with different growth regulators in same experiment conditions.The results were as followings: Rooting of 1 year softwood was better than 2 year old ones;Rooting of fast growing Robinia pseudocacia from Hungary was better than tetraploid Robinia pseudoacacia;Among the growth regulators,it was the best effect with Ganlin 1 quick-dipping,which made 60%～88% of rooting rate.