连续3年施用磷石膏对红壤理化性质的影响  

Effect of Phosphorus Gypsum Application for Three Consecutive Years on Physical and Chemical Characteristics of Red Soil

作　　者：尹元萍[1] 舒艺周 董文汉[3] 黄莉[4,5] 孙文丽[5] 宋玲凤[6] 梁泉[5] 

机构地区：[1]云南农业大学资源与环境学院,云南昆明650201 [2]云南云天化以化磷业研究技术有限公司,云南昆明650041 [3]云南农业大学科技处,云南昆明650201 [4]中国西南野生生物种质资源库,云南昆明650500 [5]云南农业大学农学与生物技术学院,云南昆明650201 [6]云南省化工研究院,云南昆明650041

出　　处：《西南农业学报》2016年第9期2187-2192,共6页Southwest China Journal of Agricultural Sciences

基　　金：云天化集团-云南农业大学联合基金(YF2011-011)

摘　　要：以已进行3年的甘蔗磷石膏定位试验为背景,研究了3年里红壤上施用磷石膏对土壤理化性质和重金属累积的影响。结果表明:与对照(仅施用氮磷钾)比较,施用磷石膏后土壤p H值、土壤总孔隙度明显下降,容重提高;土壤速效磷、有效硫、有效硅、Ca^(2+)、Al^(3+)含量显著增加;有效氮、钾有所提高;施用PG后,土壤盐基饱和度不同程度降低,降幅为1.17%~2.98%,平均降幅2.41%;而交换性钙、交换性总酸、交换性铝、阳离子交换量含量不同程度的增加。与对照比较,交换性钙、阳离子交换量分别增加45.57%和39.92%,交换性总酸和交换性铝分别增加1.74和2.84倍;土壤残留砷、镉、铬、汞、铅低于国家Ⅲ类土壤规定值。研究结果为磷石膏在红壤上的利用提供了科学依据。The effects of yield,soil physical and chemical properties and heavy metal accumulation were studied by phosphorus gypsum location test of sugarcane in red soil for three years. The results showed that： in comparison with the control（ only using N,P and K）,when phosphorus gypsum was applied,p H of soil,soil total porosity decreased obviously,but the bulk density increased; The contents of available phosphorus,available sulfur,available silicon,Ca2 ＋and Al3 ＋increased significantly; Available nitrogen and potassium increased; With the phosphorus gypsum application,soil base saturation decreased in different degree,a decline of 1. 17 %- 2. 98 %,and the average fell2. 41 %; Exchangeable calcium,exchangeable acidity,exchangeable aluminum,caption exchange capacity increased in varying degrees;Compared with the control,the amount of exchangeable calcium and caption exchange capacity increased by 45. 57 % and 39. 92 %,respectively,and the total acid and exchangeable aluminum increased 1. 74 and 2. 84 times respectively; After applying phosphorus gypsum to the red soil,the residual arsenic,cadmium,chromium,mercury and lead in the soil were lower than that of the national class III soil. The research results can provide a scientific basis for the utilization of phosphorus gypsum in red soil.

关 键 词：红壤 磷石膏 甘蔗 理化性质 重金属含量 

分 类 号：S143.2[农业科学—肥料学]