磷素活化剂对红壤磷形态及有效性影响的研究  

Effects of Phosphorus Activator on Different Type of Phosphorus and Their Validities in Red Soil

作　　者：李杰[1,2] 陈智文[1] 石元亮[2] 张清[1] 李筱琳[1] 

机构地区：[1]吉林师范大学,吉林四平136000 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《水土保持学报》2011年第3期83-86,共4页Journal of Soil and Water Conservation

基　　金：国家科技支撑计划(2009BADB3B07);吉林省科技发展计划重点项目(20090223)

摘　　要：在我国南方红壤中加入不同的磷活化剂进行培养试验,结果显示:磷活化剂提高了土壤有效磷含量,不同活化剂的活化能力不同。相关分析和通径分析结果表明,磷活化剂的活化能力大小顺序为:低分子有机酸钠钙盐>腐植酸>腐植酸钠>脲基甲酸乙酯;磷活化剂可以提高红壤中的Al-P、Ca-P和Fe-P等无机磷含量,其中Al-P和Ca-P与有效磷均达到极显著水平,而Fe-P作用效果不显著,可以通过影响Al-P和Ca-P来间接影响有效磷,磷活化剂会抑制土壤中O-P的生成。Different phosphorus activators（PA） were added into southern red soil of China to test their activation capability.The results showed that PA could improve available phosphorus contents in the soil effectively,and activations capability of different activators differed.Results of coeffcient analysis and path coefficient analysis showed that the activations capability order were as follows：Low-molecular weight organic acidhumic acidsodium humateethyl allophanate.Meanwhile,PA could improve Al-P,Ca-P,Fe-P and other inorganic phosphorus contents effectively,Al-P and Ca-P was different from control significantly at 1% level,while available phosphorus and Fe-P were not different with control obviously.They still could affect active phosphorus according to Al-P and Ca-P indirectly,PA played a negative role in O-P formation of soil.

关 键 词：磷素活化剂 有效磷 无机磷 

分 类 号：S158.2[农业科学—土壤学]