Rhizosphere effects on ion concentrations near different root zones of Norway spruce (Picea abies (L.) Karst.) and root types of Douglas-fir (Pseudotsuga menziesii L.) seedlings.
作者： Jun-ling Zhang , Eckhard George
DOI: 10.1007/S11104-009-9909-0
关键词:
摘要: Micro-suction cups were installed in split-root rhizotrons to investigate changes of ion concentrations pertaining different root zones (Norway spruce) or various types (Douglas-fir). Plant seedlings grown mineral soils fertilised with a mix KMgCa unfertilised. In Norway spruce, ions accumulated mostly the rhizosphere near tips soil. Cations (Fe3+/Mn2+, Na+) and anions (Cl-, SO4 2-) depleted basal areas unfertilised Douglas-fir, accumulations (except K soil) occurred current-year suberized roots both soils. Ion one-year-old highest compared those newly-grown These data demonstrate that soil solution chemistry clearly differs segments single types. accumulation may be due high mass flow transport surfaces, was more distinct for tips.
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