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- Title
Effects of water-nitrogen coupling on leaf nutrient contents of triploid Populus tomentosa clone BT17.
- Authors
LUO Pan-pan; NIE Li-shui; XIN Ying; SUN Zhao-di; REN Zhong-xiu; WEI Dan
- Abstract
To understand the coupling effect of water and nitrogen on the leaf nutrient contents of Populus tomentosa and to search for an optimal combination of water and nitrogen for P. tomentosa, a field experiment with randomized block design (3 levels of irrigation water and 4 levels of fertilizer nitrogen) was conducted in a two-year-old P. tomentosa clone BT17 plantation in the nursery of Weixian County, Hebei Province of North China from 2007 to 2009. The N, P and K contents in BT17 leaves differed significantly among seasons, with the order of spring > summer > autumn, and had significant differences among the 12 treatments, being the highest in the treatment 75% of field capacity and 160 g per plant of N application rate. The coupling of water and nitrogen had positive effects on the leaf N, P, and K contents, and thus, more attention should be paid to this coupling effect in the management of P. tomentosa. The leaf nutrient contents had different responses to water and nitrogen. The leaf N and K contents were more affected by soil water content, while the leaf P content was more affected by N application rate.
- Subjects
CHINA; CHINESE white poplar; WATER; NITROGEN fertilizers; LEAVES; PLANT nutrients
- Publication
Yingyong Shengtai Xuebao, 2012, Vol 23, Issue 11, p2949
- ISSN
1001-9332
- Publication type
Article