盐碱地改良剂对紫花苜蓿生长的影响  

Influence of Saline-alkali Land Conditioners on Alfalfa Growth

作　　者：郑普山[1] 冯悦晨[1] 郝保平[1] 李屹峰[2] 薛志强[2] 

机构地区：[1]山西省农业科学院农业环境与资源研究所,山西省土壤环境与养分资源重点环境室,山西太原030006 [2]山西省农业科学院右玉试验站,山西右玉037200

出　　处：《山西农业科学》2012年第5期466-469,共4页Journal of Shanxi Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项(200803029-13-2);山西省农业科学院重点项目(YZD0908)

摘　　要：通过田间试验,研究了重度苏打盐碱荒地施用脱硫石膏、国产1号和国产2号3种盐碱地改良剂对紫花苜蓿出苗率和鲜草产量的影响。结果表明,与不施土壤改良剂(对照)相比,施用3种盐碱地改良剂的土壤(0～20 cm)pH值降低0.15～1.26,紫花苜蓿出苗率提高17.8%～30.5%,提高出苗率由大到小的顺序为脱硫石膏>国产2号>国产1号;鲜草总产量增加3 107.5～6 971.3 kg/hm2,促进鲜草产量增加由大到小的顺序为国产2号>国产1号>脱硫石膏。The experiment was conducted to investigate the effects of Desulfurized gypsum,Guochan 1,Guochan 2 conditioners on yield of alfalfa in the waste saline-alkali soil with heavy soda under field conditions.The results showed that,compared with the control,soil pH reduced 0.15～1.26,the emergence rate of alfalfa increased from 17.8% to 30.5% after application of three soil conditioners.The order of increasing emergence rate was Desulfurized gypsum Guochan 2 Guochan 1.The total fresh biomass of alfalfa were increased by 3 107.5～6 971.3 kg/hm2,and the order of enhancing fresh biomass was Guochan 2 Guochan 1 Desulfurized gypsum.

关 键 词：改良剂 盐碱地 土壤理化性质 出苗率 鲜草产量 紫花苜蓿 

分 类 号：S156.4[农业科学—土壤学] S551.7[农业科学—农业基础科学]