[Characteristics of available P in the rhizosphere soil in pure Juglans mandshurica and Larix gmelinii and their mixed plantation].
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.
Chen
Yongliang
Y
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016. yolich@263.net
Han
Shijie
S
Zhou
Yumei
Y
Zou
Chunjing
C
Zhang
Junhui
J
D031324:Juglans / Q000254:growth & development*; D028221:Larix / Q000254:growth & development*; D010758:Phosphorus / Q000032:analysis*; D018517:Plant Roots; D012987:Soil / Q000032:analysis*
D012987:Soil; D010758:Phosphorus