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- W2373857072 abstract "In order to know the effects of traditional fertilization and formula fertilization by soil testing on the morphology of nitrogen in dark brown soil and its distribution in different aggregates,a breeding method of physics and chemistry is used to conduct a comparative study on the distribution of nitrogen in the different-sized aggregates of the dark brown soil and its chemical morphology when traditional fertilization and formula fertilization by soil testing are applied respectively. Compared with traditional fertilization in spring and autumn,when formula fertilization by soil testing was applied,the total nitrogen in soil showed an average decrease of 23. 2% and 20% respectively in the soil layer of 0 ~ 20 cm,with an average decrease of 48. 8% in the layer of 20 ~ 40 cm. Ammonium nitrogen is so sensitive to the methods of fertilization that when the formula fertilization by soil testing was applied in autumn the content of ammonium nitrogen was reduced much more than it was in traditional fertilization. Nitrogen in soil in the traditional fertilization was mainly distributed in the aggregates of the layers of 0 ~ 0. 25 mm and 0. 5 ~ 1 mm,while in formula fertilization by soil testing it was mainly distributed in the aggregate of the layers of 0. 25 ~ 0. 5 mm and 0 ~ 0. 25 mm. The study proved that formula fertilization by soil testing helped to reduce the risk of nitrogen pollution,and it was also confirmed that formula fertilization by soil testing had huge effects on the morphology of nitrogen in dark brown soil and its distribution in different aggregates." @default.
- W2373857072 created "2016-06-24" @default.
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- W2373857072 date "2014-01-01" @default.
- W2373857072 modified "2023-09-23" @default.
- W2373857072 title "Effects of Traditional Fertilization and Formula Fertilization by Soil Testing on the Morphology of Nitrogen in Dark Brown Soil and Its Distribution in Different Aggregates" @default.
- W2373857072 hasPublicationYear "2014" @default.
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