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嘉兴平原位于长江三角洲的南缘,是浙江省的重要商品粮基地。境内地势平坦,河流纵横,水田占耕地面积的84.4％,主要水稻土有青紫泥田、黄斑田、小粉田和粉泥田,分别占水田面积的27.3％、30.9％、5.1％和10.0％。本文以这4种水稻土为研究对象,比较其供氮特性和氮肥效应,为因土施氮和配方施肥提供依据。
Jiaxing Plain is located in the southern margin of the Yangtze River Delta, Zhejiang Province is an important commodity grain base. The terrain is flat and the rivers are vertical and horizontal. Paddy fields account for 84.4% of the cultivated land area. The major paddy soils are purple, yellow, small and muddy fields, accounting for 27.3%, 30.9%, 5.1% and 10.0% of paddy fields respectively. In this paper, four kinds of paddy soils were selected as the research object, comparing their nitrogen-supplying characteristics and nitrogen fertilizer effect, and providing the basis for soil nitrogen and formula fertilization.