STUDY ON AMOUNT OF NITROGEN FERTILIZER APPLIED TO CHESTNUT IN NORTHERN CHINA
Ruan Shuan Gai Sufen Chen Xizhong Qu Hui (Liaoning Economic Forest Research Institute Dalian 110032)
Proper amount of fertilizer is important to raise yield of chestnut with a low cost. Four kinds of amount of N-fertilizer were applied and effects of fertilizer on growth and yield were analyzed. The result shows that 150 kg/hm 2 N-fertilizer is preferable. Relation between N-fertilizer and N,P contents in the leaf were highly correlated between 0 and 150kg/hm 2 treatments; Amount of N-fertilizer and branch growth also correlated between 0 and 300 kg/hm 2 treatments; With the increasing of N-fertilizer amount, K content in the leaf changed little, which may be caused by absorption of the fruit when the experiment was done.
【CateGory Index】： S664.2