(1.Hebei Lyuling Fruit Co.Ltd.，Xingtai，Hebei 054300；2.Institute of Walnut Industry Technology of Hebei Province(Xingtai)，Xingtai,Hebei 054300；3.Research Center for Walnut Engineering and Technology of Hebei，Xingtai,Hebei 054300;4.College of Forestry，Agricultural University of Hebei，Baoding,Hebei 071000)
Taking full advantage of the characteristics of early fruiting，high yields quickly achieving and high yield of precocious walnut，the high-density cultivation techniques of nursery type precocious walnut was preliminarily studied through high-density cultivation of good walnut variety ‘Lyuling’，including key technologies such as land preparation and planting，plastic pruning，soil fertilizer and water management，pest control and cold prevention.It had created the largest cultivation density of walnuts，and laid a foundation for the realization of extremely dwarfing and dense planting and highly mechanized management of precocious walnuts.