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- W2378983344 abstract "The effects of different concentration of nitrogen treatments on the biomass,nitrogen and phosphorus partition in roots,stems and leaves of one-year-old Larix olgensis seedlings were studied by a sand culture experiment in greenhouse. The results suggested that N supply could significantly increase the seedling biomass. The biomass of roots,stems and leaves were the highest when 8 mmol /L nitrogen was applied in July,August and September. The biomass of leaves decreased gradually,while that of roots increased from July to September. The N concentrations increased significantly along with the N supply levels increasing. The mean N concentrations in roots,stems and leaves in the latter growth stage were 1. 46,1. 48 and 1. 17 times respectively more than that in the initial stage. The P concentrations fluctuated with the N levels change. The N stocks of whole plant increased markedly as the growth of plant,and it was 2. 86 times more in September than in July. The N allocation also varied in leaf,stem,and root. The proportion of N allocation in leaf was the highest in July( 60% in average). The proportion of N allocation in root increased with plant growth,which was the highest in September( 41% in average). There was no obvious difference in N stocks among different N levels. The P stocks of the roots,stems and leaves were basically consistent with the N,but the variation scope was smaller than that of N." @default.
- W2378983344 created "2016-06-24" @default.
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- W2378983344 date "2014-01-01" @default.
- W2378983344 modified "2023-09-23" @default.
- W2378983344 title "Effects of different nitrogen supply on biomass,N and P concentration and their seasonal variation of Larix olgensis seedlings" @default.
- W2378983344 hasPublicationYear "2014" @default.
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