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- W2292622011 abstract "Field experiments using the potato variety Kexin No. 13 were carried out on calcic chernozem soils in western Songnen Plain, China. The accumu- lation, absorption ratio and distribution of nitrogen-15 isotope ( 15 N), as well as the nitrogen (N) fertiliser utilisation rate in the potato plants were examined by the 15 N tracer technique. The results revealed that the N contents of the aboveground parts, tuber and roots of the potatoes increased with increased N fertiliser application. The potato yield also gradually increased with increased N application. In the 15 N micro-plot experiment with 90 kg hm -2 pure N treatment, the N fertiliser and soil N absorbed by the potato plants accounted for 17-29 and 71-83 % of the total N, respectively. The N fertiliser and soil N absorbed by the potato plants were 0.19-0.58 and 0.45-2.74 g plant -1 , respectively. The 15 N fertiliser utilisation rate of whole potato plant was 10-32 % and was relatively low at the early stage. Soil N was an important N source at both early and late growth stages of the potato plants." @default.
- W2292622011 created "2016-06-24" @default.
- W2292622011 creator A5033158963 @default.
- W2292622011 date "2013-01-01" @default.
- W2292622011 modified "2023-09-26" @default.
- W2292622011 title "15 N tracer technique analysis of the absorption and utilisation of nitrogen fertiliser by potatoes" @default.
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