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据测定,辽宁省水稻土速效钾、缓效钾的平均含量均以盘锦、营口地区的盐渍型水稻土为最高,其次是东港地区盐渍型、淹育型和潜育型水稻土以及铁岭地区淹育型水稻土,最低的是沈阳地区淹育型水稻土。各地区水稻土的供钾强度(Ⅰ)、供钾容量(Q)以及供钾缓冲力(Q/I),均按上述地区顺序依次递减。出现这些差异,是由于土壤成土母质、粘土矿物类型、钾肥用量、灌溉水水质以及土壤基本性质,诸如粘粒含量、阳离子交换量、pH值等因素不同而造成的。盘锦、营口稻区水稻土在这几方面都占优势。
It is determined that the average content of available potassium and slow-acting potassium in paddy soils in Liaoning Province are the highest in saline soil in Panjin and Yingkou, followed by salinized, submerged and latent paddy soils in Donggang and Tieling The most submerged paddy soil in the region is the submerged paddy soil in Shenyang. The K supply intensity (I), K supply capacity (Q) and K buffering capacity (Q / I) of paddy soils in all regions decreased in order of the above regions. These differences are caused by factors such as soil parent material, type of clay mineral, potash fertilizer, irrigation water quality and basic soil properties, such as clay content, cation exchange capacity, and pH value. Panjin, paddy rice paddy area in these areas are dominant.