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- W3047977029 abstract "In this study, the dynamics of soil available nitrogen in rubber plantations was studied to provide a basis for the sustainable management of soil nutrients in rubber plantations. Soil samples were collected from 0 - 20 cm and 21 - 40 cm depth of rubber plantations in Wenchang area of Hainan Province to determine the soil ammonium nitrogen and nitrate nitrogen in March, June, September and December. The results showed that the total available nitrogen in the rubber plantation soil was mainly composed of nitrate nitrogen (>57%), and this nitrate nitrogen was always the absolute composition advantage in the total available nitrogen composition, and this composition advantage did not change with the change of soil depth. Nitrate and ammonium nitrogen in rubber plantation soil showed obvious seasonal variation characteristics in 0 - 20 cm soil layer and 21 - 40 cm soil depth. With the seasonal time change, the contents of soil nitrate and ammonium nitrogen increased first and then decreased. Summer and autumn were the most active periods of soil nitrate and ammonium nitrogen. There was a significant positive correlation between soil nitrate nitrogen content and ammonium nitrogen content (r = 0.6532**). Based on the correlation between soil ammonium nitrogen content and nitrate nitrogen content, the content of ammonium nitrogen in soil can be estimated according to the amount of soil nitrate nitrogen." @default.
- W3047977029 created "2020-08-13" @default.
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- W3047977029 date "2020-01-01" @default.
- W3047977029 modified "2023-10-16" @default.
- W3047977029 title "Dynamics of Soil N<span>H</span><sup>+</sup><sub style="margin-left:-10px;">4</sub>-N and N<span>O</span><sup>-</sup><sub style="margin-left:-4px;">3</sub>-N in Rubber Plantation in Wenchang, South China" @default.
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- W3047977029 doi "https://doi.org/10.4236/as.2020.118045" @default.
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