title: [Characteristics of available P in the rhizosphere soil in pure Juglans mandshurica and Larix gmelinii and their mixed plantation].
abstract: The rhizosphere and non-rhizosphere soils were sampled in the pure and mixed plantations of Juglans mandshurica and Larix gmelinii by peeling the adhering soil of the roots, and the available P content were analyzed. The results showed that the available P content in the rhizosphere soil in the pure Larix gmelinii was 55.8% higher than that in the non-rhizosphere soil, while the available P content in the pure Juglans mandshurica was higher than that in the non-rhizosphere soil by 10.1%. The roots of Larix gmelinii had important effect on mobilizing P in the rhizosphere soil. The available P content in rhizosphere soil of Juglans mandshurica in the mixed plantation was higher than that in the pure plantation by 45.2% due to the effects of the roots of Larix gmelinii. The mechanism by which the available P content in the rhizosphere soil of Larix gmelinii was much higher was elucidated by means of P absorption, P desorption, and inorganic P gradation.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016. yolich@263.net
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Chen
authors.forename: Shijie
authors.initials: S
authors.lastname: Han
authors.forename: Yumei
authors.initials: Y
authors.lastname: Zhou
authors.forename: Chunjing
authors.initials: C
authors.lastname: Zou
authors.forename: Junhui
authors.initials: J
authors.lastname: Zhang
mesh_terms: D031324:Juglans / Q000254:growth & development*; D028221:Larix / Q000254:growth & development*; D010758:Phosphorus / Q000032:analysis*; D018517:Plant Roots; D012987:Soil / Q000032:analysis*
chemical_list: D012987:Soil; D010758:Phosphorus