油茶幼林施肥试验

摘要

The fertilization test of young forest of Camellia was based onthe experiment of nitrogen,phosphorus and po-tassium in three factors and four levels with the same fertilizer volume in same area.The fertilizer experiment was test in 11 treatment during 2013 ~2014.The comparative analysis to compare the different fertilization treatments on the effects of vegetative growth of Camellia was base on tree height,diameter and crown width change from 2012 ~2014.The results showed that the application of same treatment of nitrogen,phosphorus,the tree height growth of 2-year Camellia are in-crease with the potassium fertilizer increase.The application of same treatment of nitrogen and potassium,the tree height,diameter and crown widthare increase with the phosphorusfertilizer increase.There is no significant effect on the growth of diameter and crown width with fertilizer of nitrogen.The best treatment is the best treatment oflargest amount of potassium fertilizer applicationin the formula.The best application amount of chemical fertilizer on nitrogen,phosphorus 15.7 kg,pure phosphorus 11.6 kg,pure potassium 13.2 kg per 667 m2 .%选用氮肥、磷肥和钾肥3种肥料，采用3因素4水平试验设计，同时，单位面积配施相同施肥量的有机肥，2013年、2014年连续2年对油茶幼林进行施肥试验，共设11个处理；2012年、2013年、2014年分别观测树高、地径和冠幅，分析不同施肥处理对油茶幼林营养生长的影响。结果表明，连续2年施肥后，磷肥和钾肥相同的处理，其2年的树高的增长量均随着氮肥施用量的增加而加大；氮肥和钾肥相同的处理，其2年的树高、地径和冠幅的增长量均随着磷肥施用量的增加而加大；氮肥、磷肥相同的处理，其2年的树高、地径和冠幅的增长量均随着钾肥施用量的增加而加大；氮肥对地径和冠幅的影响规律性不明显。施肥效果最好的处理是配方中钾肥施用量最大的处理。建立的氮肥、磷肥和钾肥效应模型得出的最佳施肥量为：氮肥15.7 kg／667 m2、磷11.6 kg／667 m2、钾13.2 kg／667 m2。