北方产区栗树氮肥用量研究  

STUDY ON AMOUNT OF NITROGEN FERTILIZER APPLIED TO CHESTNUT IN NORTHERN CHINA

作　　者：阮树安[1] 盖素芬[1] 陈喜忠[1] 曲晖[1] 

机构地区：[1]辽宁省经济林研究所

出　　处：《辽宁林业科技》1998年第4期38-40,共3页Liaoning Forestry Science and Technology

摘　　要：试验证明栗树施Ｎ１５０ｋｇ／ｈｍ２效果极显著，每公顷产量增加９１８～１６５０ｋｇ，增产效果达到４９２％～５２３％，每公顷增加产值７３３５～１６５００元。为此，１５０ｋｇ／ｈｍ２纯Ｎ施用量可作为北方产区栗树施Ｎ指标。不同施Ｎ量与叶片中Ｎ、Ｐ含量的关系：在Ｎ０～Ｎ１５０处理之间二者呈显著正相关；在Ｎ０～Ｎ３００处理间，枝长、枝粗的增加与施Ｎ量有显著相关性。在叶片含Ｎ１６％～２４％、Ｐ００９６％～０１６０％区间内，产量随Ｎ、Ｐ含量的增加而增加，二者呈显著相关。施Ｎ量增加，叶片中Ｋ的含量变化不大，其主要原因是采叶时正逢栗果迅速膨胀时期，Ｋ主要供给果实发育。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.

关 键 词：板栗树 营养 施N量 产量 营养因子 

分 类 号：S664.206.2[农业科学—果树学]