The content of available nitrogen in different soil types. There was no significant difference in the content of alkali hydrolyzable nitrogen among different soil types, with the highest content in fluvo aquic soil, with an average of 70.81 mg / kg, with a range of 23.1-213.4 mg / kg, while that of brown soil was 69.34 mg / kg, with a range of 21.0-204.8 mg / kg<br>
正在翻译中..