核桃是我国出口创汇的主要经济作物之一 ,但由于采摘及后期管理跟不上 ,使核桃品质大幅度下降 ,核桃的商品性受到很大影响 ,直接影响其生产效益。1　适期采收　目前核桃生产中早采现象十分明显 ,核桃没有充分成熟 ,核仁瘦小 ,常有空仁或半仁 ,不饱满 ,达不到商品要求 ;仁色呈深 Walnut is one of the main cash crops for foreign exchange earning in our country. However, the quality of walnut is greatly affected due to the poor quality of walnut due to the lack of picking and management in the later period, which directly affects its production efficiency. 1 harvest at an early stage of the current production of walnut is very obvious phenomenon, walnut is not fully mature, thin nucleolus, often empty kernel or half kernel, not full, not up to the commodity requirements; benevolence deep