摘要
为研究腐植酸土壤调理剂对黄河三角洲盐碱土的改良效果,通过腐植酸土壤调理剂与常规肥料配伍,在黄河三角洲盐碱土壤上进行3年小麦定位试验。结果表明:施用腐植酸土壤调理剂能够改善土壤化学性状。与常规施肥相比,施用腐植酸土壤调理剂后,土壤有机质、碱解氮、有效磷、速效钾含量分别提高3.8%~5.0%、8.6%~12.0%、16.4%~29.2%、27.3%~30.7%。腐植酸土壤调理剂能够改良土壤盐碱障碍,相比常规施肥处理,pH降低0.30~0.43个单位,碱化度降低4.6%~27.2%,脱盐率为17.28%~23.53%,钠离子含量降低15.4%~42.7%,氯离子含量降低20.7%~37.6%。2250 kg/hm^2和3000 kg/hm^2土壤调理剂施用量间均无显著差异。腐植酸土壤调理剂能够提高小麦产量,与常规施肥相比,小麦产量提高7.47%~25.83%。综上,施用腐植酸土壤调理剂2250 kg/hm^2是改良黄河三角洲盐碱土以及提高小麦产量的最佳用量。
Delta,humic acid soil conditioner was combined with conventional fertilizer,and a 3-year wheat positioning test on saline-alkali soil in the Yellow River Delta was carried out.The results showed that:the humic acid soil conditioner could improve soil chemical properties;compared with conventional fertilization,the soil organic matter,alkali-hydrolyzed N,available P and available K was increased by 3.8%-5.0%,8.6%-12.0%,16.4%-29.2%and 27.3%-30.7%,respectively,in soil treated by humic acid soil conditioner;compared with conventional fertilization,humic acid soil conditioner could improve soil salinity barrier,the soil pH was reduced by 0.30-0.43 units,soil exchangeable sodium percentage was reduced by 4.6%-27.2%,the desalination rate was 17.28%-23.53%,the content of soil Na+and Cl-was reduced by 15.4%-42.7%and20.7%-37.6%,respectively;there was no significant difference between humic acid soil conditioner application of 2250 kg/hm^2 and 3000 kg/hm^2;compared with conventional fertilization,the wheat yield of soil applied with humic acid soil conditioner could increase by 7.47%-25.83%.In conclusion,humic acid soil conditioner of 2250 kg/hm^2 is regarded as the optimum dosage to improve the saline-alkali soil and increase wheat yield in the Yellow River Delta.
作者
于晓东
郭新送
陈士更
张丽
范仲卿
丁方军
Yu Xiaodong;Guo Xinsong;Chen Shigeng;Zhang Li;Fan Zhongqing;Ding Fangjun(Key Laboratory of Humic Acid Fertilizer,Ministry of Agriculture and Rural Affairs,Tai’an 271600,Shandong,China;Shandong Engineering Technology Research Center of Efficient Utilization of Humic Acid/Fertilizer Science Tech.Co.,Ltd.,Shandong Agricultural University,Tai’an 271600,Shandong,China;National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources,Tai’an 271600,Shandong,China;Agricultural Technology Extension Center of Feicheng,Tai’an 271600,Shandong,China)
出处
《农学学报》
2020年第11期25-31,共7页
Journal of Agriculture
基金
山东省重点研发计划“基于作物提质增效的农业种植精准管理智能服务平台开发与产业化应用”(2019JZZY010713)。
关键词
腐植酸
土壤调理剂
盐碱土
小麦
产量
Humic Acid
Soil Conditioner
Saline-alkali Soil
Wheat
Yield