广西地区桉树人工幼林树叶主要养分含量分析

The Main Nutrient Content Analysis of Eucalyptus Leaves in Guangxi Young Artificial Forests

为探明桉树(Eucalyptus sp.)人工幼林树叶的主要养分含量,在广西桉树主要种植区内选择桉树幼林树叶进行了养分含量测定。结果表明,桉树幼林树叶N含量为15.56～26.56 g/kg,P含量为0.51～1.03 g/kg,K含量为6.04～13.17 g/kg,Cu含量为3.29～8.50 mg/kg,Zn含量为12.82～24.38 mg/kg,B含量为29.84～43.90 mg/kg。从桉叶营养含量来看,广西大部分地区桉叶的养分含量比较充足,但桂西地区德保县桉叶的P、K和田东县桉叶Cu含量存在亏缺现象,建议在施肥时适当添加P、K和Cu,以保证桉树的正常生长。

The eucalyptus leaf nutrient content was one of the effective measures of balance fertilization for the young eucalyptus growth.In order to investigate the primary nutrient content of eucalyptus leaf in young artificial forests,1～2-year-old eucalyptus leaf from main eucalyptus planted area in Guangxi were chosen for nutrient content determination.The results showed that N content was 15.56～26.56 g / kg;P content was 0.51～1.03 g / kg;K content was 6.04～13.17 g / kg;Cu content was 3.29～8.50 mg / kg;Zn content was 12.82～24.38 mg / kg;B content was 29.84～43.90 mg / kg in 1～2-year-old eucalyptus leaf.From the angle of eucalyptu leaf nutrition content,the nutrient content of eucalyptu leaf in most areas of Guangxi were quite sufficient,but there were P and K deficiency in Debao County,west of Guangxi and Cu deficiency in Tiandong County in eucalyptu leaf.So it was suggested increasing P,K and Cu element content to promote the normal growth of eucalyptu.