중국 건조지역에서 시비와 보수제 처리에 의한 신강포플러의 생장 및 묘목의 양분 ？량 변화

초록

To investigate soil management practices for increasing tree growth in arid regions of China, Xinjiangpoplar (Populus alba var. pyramidalisfertilizers (nitrogen and phosphorus) and absorbents (artificial; K-SAM and natural: Yuho (Artemisia ordosica))at Dengkou in Iner Mongolia. Sedling height, diameter at breast height (DBH), biomass, and nitrogen (N) andphosphorus (P) concentrations were measured 1.5 years after the treatments. Soil texture was sandy loam fornursery and clay loam for windbreak, soil pH was 8.78 for nursery and 8.51 for windbreak, and total soil Nconcentration was 0.06% for nursey and 0.08% for windbreak. In general, sedling height and DBH increasedin the N fertilizer treatment compared to control or other treatments both in nursery and windbreak. Alsobelowground biomass increased after the N + P treatment. Foliage N and P concentrations following N and/orP treatments were same in the nursey, however, they significantly increased in the windbreak indicating Ndeficiency. It apeared that N was a limiting factor for early growth of Xinjiang poplar sedlings and artificialand natural absorbents (K-SAM and Yuho) would be useful to increase seedling growth in the arid region.

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