摘要
研究了亚铵造纸制浆黑液对石灰性轻壤质褐土和砂壤质水稻土微结构特征的影响。结果表明:与纯化学肥料处理的土壤相比,亚铵制浆黑液对土壤团聚体的形成、孔隙度的增加、结构的改善具有明显促进作用。还发现:①有机-铁质胶膜并不仅仅存在于粘质水稻土的孔隙壁上,在砂壤质水稻土中也同样存在;②根据耕作层中孔隙壁锰质胶膜的有无,不能判断供试水稻土肥力水平的高低。
The effects of straw-paper-pulping wastes using ammonium sulfite on the microstructural characLeristics of calcareous drab soil and sandy loam paddy soil have been investigated.The results abtained are summarized as follows:①The wastes have the stronger ability to promote the formation of aggregates,to increase the total porosity,to improve the structure(fabric) of given soils than chemical fertilizer.②There is organo-ferran not only on the pore wall of clayey paddy soil but also on that of sandy loam paddy soil. ③According Lo whether there is mangan on the pore wall in cultivated layer, to judge that the fertility of investigated paddy soil is higher or not is futile.
关键词
制浆
黑液
微结构
pulping wasles
soil microstructure
