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在稻田土壤氮素矿化和供应的研究中大都只注意耕层,显然这是不够的。本工作的目的是了解太湖地区三种类型水稻士耕层以下土壤对水稻的氮素供应能力。试验土壤为石灰性和非石灰性排水好的
In the study of paddy soil nitrogen mineralization and supply mostly focus on the top layer, obviously this is not enough. The purpose of this work is to understand the nitrogen supply ability of soils to rice under three types of paddy-tillage in Taihu Lake. The test soil is well drained with lime and non-lime