ZHAI Ming-pu, JIANG San-nai. Dynamics of nutrient absorption in root systems of Populus×xiao zhuanica and Robinia pseudoacacia[J]. Journal of Beijing Forestry University, 2006, 28(2): 29-33.
Citation:
ZHAI Ming-pu, JIANG San-nai. Dynamics of nutrient absorption in root systems of Populus×xiao zhuanica and Robinia pseudoacacia[J]. Journal of Beijing Forestry University, 2006, 28(2): 29-33.
ZHAI Ming-pu, JIANG San-nai. Dynamics of nutrient absorption in root systems of Populus×xiao zhuanica and Robinia pseudoacacia[J]. Journal of Beijing Forestry University, 2006, 28(2): 29-33.
Citation:
ZHAI Ming-pu, JIANG San-nai. Dynamics of nutrient absorption in root systems of Populus×xiao zhuanica and Robinia pseudoacacia[J]. Journal of Beijing Forestry University, 2006, 28(2): 29-33.
1. Key Laboratory for Silviculture and Conservation, Ministry of Education, College of Resources and Environment, Beijing Forestry University, 100083, P. R. China;
2. Department of Silviculture, State Forestry Administration, Beijing, 100714, P. R. China
The nutrient absorption of N,P and K in root systems of Populus×xiaozhuanica and Robiniapseudoacacia is analysed by a dynamic methodology.The results show that:1) NH4+ affinity for Populus×xiaozhuanica is weaker than that for Robinia pseudoacacia;the rate of NH4+ flowing into Populus×xiaozhuanica is slower than that flowing into Robinia pseudoacacia;the maximum absorption rate of NH4+ by the root system of Populus×xiaozhuanica is much higher than that of Robinia pseudoacacia;compared with Robinia pseudoacacia,Populus×xiaozhuanica has a stronger absorbency for and resistance to a deficiency in NH4+.2) the rate of H2PO4-flowing into Robinia pseudoacacia is higher than that of Populus×xiaozhuanica;Robinia pseudoacacia has a stronger H2PO4-deficiency resistance than Populus×xiaozhuanica.3) although differences exist between Populus×xiaozhuanica and Robinia pseudoacacia in the dynamic characteristics of the ability to absorb K+,competition does not occur when the two species are planted together.Populus×xiaozhuanica and Robinia pseudoacacia share a complementary and harmonious relation in the absorption of N and P nutrient elements.
Sheng-nan Shi，Zhan-yuan Yu，Qiong Zhao. Responses of plant diversity and species composition to the cessation of fertilization in a sandy grassland. Journal of Forestry Research. 2014(02): 337-342 .
DownLoad: