摘要
以小陇山渭河流域(麦积区元龙镇、三岔镇境内)为试验地点,设置A(1kg尿素,塑料薄膜)、B(1 kg尿素,无纺布)、C(8kg硫酸二氢钾,塑料薄膜)、D(8 kg硫酸二氢钾,无纺布)、E(0.5 kg尿素+4 kg硫酸二氢钾,塑料薄膜)、F(0.5 kg尿素+4 kg硫酸二氢钾,无纺布)6个试验组,对不同基质下白皮松生长期和休眠期叶片中的N、P、K元素含量进行评估,比较不同基质对白皮松叶片养分含量的影响.在白皮松生长期,处理组B(1kg尿素,无纺布)叶片中的N,P元素质量分数相对较高,分别为4.21 g/kg和0.22 g/kg,处理组D(8kg硫酸二氢钾,无纺布)叶片中的K元素质量分数相对较高,为0.81 g/kg;在白皮松休眠期,处理组B叶片中的N,P元素质量分数相对较高,分别为3.35 g/kg和0.12 g/kg,处理组D叶片中的K元素质量分数相对较高,为0.48 g/kg.处理组B在白皮松生长期和休眠期的叶片中均含有较高的N和P元素,处理组D在白皮松生长期和休眠期的叶片中均含有较高的K元素.
Abstract
In this study,6 experimental groups were set up in Weihe River Basin of Xiaolong Mountain to evaluate the contents of N,P and K elements in the leaves of Pinus bungeana in growing and resting stages under different substrates,and compare the effects of different substrates on the nutrient contents of Pinus bungeana leaves.In the growth stage of Pinus bungeana,the content of N and P in leaves of treatment Group B was relatively high,4.21 g/kg and 0.22 g/kg,respectively,and the content of K in leaves of treatment Group D was relatively high,0.81 g/kg.In the resting stage,the contents of N and P elements in leaves of Group B were relatively high,3.35 g/kg and 0.12 g/kg,respectively,and the contents of K elements in leaves of Group D were relatively high,0.48 g/kg.Treatment Group B had higher content of N and P elements in both growth and resting stages,and treatment Group D had higher con-tent of K elements in both stages.
NETL
NSTL
万方数据