交换性阳离子组成、养分全量及速效含量可作为评价红粘土红壤化学肥力演化的指标。
The composition of exchangeable cation and the soil nutrient content can be used as the indexes to evaluate soil chemical fertility evolution, especially the former is more important.
将无机高分子混凝剂聚合硅酸氯化铝（PSAC）与阳离子型聚季铵盐絮凝剂按比例复配，用于处理活性红染料漂洗废水。
The inorganic coagulant of polysilicic aluminum chloride(PSAC) and cationic polymeric quaternary ammonium salt are mixed to treat reactive red dyeing wastewater.
应用推荐