坝上地区紫花苜蓿土壤铁、锰和锌丰缺指标初步研究  

Preliminary Study on Abundance and Deficiency Index of Iron,Manganese and Zinc for Alfalfa Soil in Bashang Area

作　　者：谢勇[1,2] 孙洪仁[2] 张新全[1] 刘爱红[2] 孙雅源[2] 刘治波[1] 丁宁[2] 

机构地区：[1]四川农业大学动物科技学院草业科学系,四川雅安625014 [2]中国农业大学草地研究所,北京100193

出　　处：《草业与畜牧》2010年第10期6-11,共6页Pruataculture & Animal Husbandry

基　　金：农业部"948"国际先进农业科技引进重大专项"优质草产品加工技术"(2006-G38);农业部公益性行业科研专项"人工草地优质牧草生产技术研究与示范"(nyhyzx07-022);农业部现代农业产业技术体系建设项目"现代牧草产业技术体系建设"资助;科技部"十一五"科技支撑"优质草产品加工与高效利用关键技术研究"(2006BAD16B03)

摘　　要：从坝上地区的17个土壤样品中选取养分梯度差异较大的5个地点的土壤,安排全肥(施Fe、Mn、Zn肥)、缺铁、缺锰、缺锌和不施肥的盆栽试验,研究了坝上地区紫花苜蓿土壤铁、锰、锌丰缺指标。结果表明,坝上地区紫花苜蓿土壤有效铁极缺、缺、中等、丰富和极丰富的指标范围依次为<4.9、4.9～15.1、15.1～35.3、35.3～46.9和>46.9mg/kg;有效锰极缺、缺、中等、丰富和极丰富的指标范围依次为<3.3、3.3～13.1、13.1～36.9、36.9～52.0和>52.0mg/kg;有效锌极缺、缺、中等、丰富和极丰富的指标范围依次为<0.4、0.4～1.2、1.2～2.9、2.9～3.9和>3.9mg/kg。The abundance and deficiency index of iron,manganese,and zinc for Alfalfa soil in Bashang area were studied by pot experiment.The results showed that planted alfalfa in Bashang area,its abundance and deficiency index of nutrient：when its value was less than 4.9 mg/kg,available iron of soil was less deficient;when its value was from 4.9～ 15.1 mg/kg,available iron of soil was deficient;when its value was from 15.1～35.3 mg/kg,available iron of soil was in middle degree;when its value was from 35.3～46.9 mg/kg,available iron of soil was abundant;when its value was more than 46.9 mg/kg,available iron of soil was greatly abundant.when its value was less than 3.3 mg/kg,available manganese of soil was less deficient;when its value was from 3.3～13.1 mg/kg,available manganese of soil was deficient;when its value was from 13.1～36.9 mg/kg,available manganese of soil was in middle degree;when its value was from 36.9～52.0 mg/kg,available manganese of soil was abundant;when its value was more than 52.0 mg/kg,available manganese of soil was greatly abundant.when its value was less than 0.4 mg/kg,available zinc of soil was less deficient;when its value was from 0.4～1.2 mg/kg,available zinc of soil was deficient;when its value was from 1.2～2.9 mg/kg,available zinc of soil was in middle degree;when its value was from 2.9～3.9 mg/kg,available zinc of soil was abundant;when its value was more than 3.9 mg/kg,available zinc of soil was greatly abundant.

关 键 词：紫花苜蓿 土壤养分 铁 锰 锌 养分丰缺指标 坝上地区 

分 类 号：S158.3[农业科学—土壤学]