摘要
本试验研究了不同N素供应水平(0—840ppm)对盆栽婆枣和板枣体内各器官N、P、K含量的影响。结果表明,随基质N浓度增加,叶片、根、枣头一次枝、二次枝和幼干的含N量随之增加,而叶片含K量呈下降趋势。在基质N浓度较低时,叶片P浓度随基质N浓度增加而增加,而在高浓度时,叶片P浓度则随基质N浓度增加而下降。不同N素供应水平对根、枣头一次枝、二次枝和幼干的P、K浓度影响不大。
Abstract The effects of various nitrogen levels(0-840ppm)were studied on N, P, and K contents of different parts of young potted Chinese jujube trees. As the nitrogen levels were increased, the N content of leaves, roots, shoots and young trunks tended to increase, but leaf K contents tended to decrease. Within the lower range of nitrogen levels, leaf P contents increased as the nitrogen levels were increased. Within the higher range, leaf P contents decreased as the nitrogen levels were increased. The P, K contents of roots, shoots and young trunks were little affected with varying nitrogen levels.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1992年第1期73-76,共4页
Journal of Hebei Agricultural University
关键词
枣树
氮
磷
钾
含量
施肥
Chinese jujube
nitrogen
phosphorus
potassium
