Record ID No. |
5149 |
Author(s) |
Shujuan Zhang; Li Wang; Fang Ma; Xue Zhang; Zhe Li; Shiyang Li; Xiaofeng Jiang , 2015 |
Affiliation |
State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China |
Title |
Can arbuscular mycorrhiza and fertilizer management reduce phosphorus runoff from paddy fields? |
Source. Vol.(no):Page |
Journal of Environmental Sciences 33: 211-218 |
Categories |
Arbuscular Mycorrhiza Ectomycorrhiza |
Subjects |
General |
Sub-subjects |
Insects |
Country |
China |
Abstracts |
Our study sought to assess how much phosphorus (P) runoff from paddy fields could be cut down by fertilizer management and inoculation with arbuscular mycorrhizal fungi. A field experiment was conducted in Lalin River basin, in the northeast China: six nitrogen–phosphorus–potassium fertilizer levels were provided (0, 20%, 40%, 60%, 80%, and 100% of the recommended fertilizer supply), with or without inoculation with Glomus mosseae. The volume and concentrations of particle P (PP) and dissolved P (DP) were measured for each runoff during the rice growing season. It was found that the seasonal P runoff, including DP and PP, under the local fertilization was 3.7 kg/ha, with PP, rather than DP, being the main form of P in runoff water. Additionally, the seasonal P runoff dropped only by 8.9% when fertilization decreased by 20%; rice yields decreased with declining fertilization. We also found that inoculation increased rice yields and decreased P runoff at each fertilizer level and these effects were lower under higher fertilization. Conclusively, while rice yields were guaranteed arbuscular mycorrhizal inoculation and fertilizer management would play a key role in reducing P runoff from paddy fields. |