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- W2393230680 abstract "Nitrogen fertilizer labeled with stable isotope 15 N were applied to different crop to study the ability of supply nitrogen of yellow soil By means of pot cultivation trials,field trials and plot trials for several years,it was found that the “A” value was related to the contents of soil hydrolysable nitrogen The quantity of N absorption by the aerial part was significantly related to the ratio of hydrolysable nitrogen to the total nitrogen of the soil So we could use the ratio of the quantity of N absorption by the aerial part of crops from the unfertilized soil in field trial to the quantity of hydrolysable nitrogen to define a conversion coefficient It was concluded that the yellow soil′s conversion coefficient of nitrogen supply was 0 3 of hydrolysable nitrogen content for maize and rice at an elevation of 1000～1200 meter and 0 2 at an elevation of 1300～1400 meter region" @default.
- W2393230680 created "2016-06-24" @default.
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- W2393230680 date "2002-01-01" @default.
- W2393230680 modified "2023-09-25" @default.
- W2393230680 title "The nitrogen supply ability of yellow soil in Guizhou plateau" @default.
- W2393230680 hasPublicationYear "2002" @default.
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