粉垄措施对银北盐碱地土壤pH、全盐及碱化度的影响  

Effects of Powder Ridge Measures on pH,Total Salt and Alkalization of Soil in Northern Yinchuan Saline-Alkali Land

作　　者：何进勤[1] 李和明 柳旭 曾凡佩 罗昀[1] 金建新[1] He Jinqin;Li Heming;Liu Xu;Zeng Fanpei;Luo Yun;Jin Jianxin(Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002;Agricultural Comprehensive Service Center,Hongyao Township People's Government,Xiji County,Xiji,Ningxia 756201;Ningxia University,Yinchuan,Ningxia 750021)

机构地区：[1]宁夏农林科学院农业资源与环境研究所,宁夏银川750002 [2]西吉县红耀乡人民政府农业综合服务中心,宁夏西吉756201 [3]宁夏大学,宁夏银川750021

出　　处：《宁夏农林科技》2023年第5期44-47,60,共5页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：宁夏回族自治区重点研发项目“粉垄耕作提升耕地质量研究与示范”(2019BBF02006-5);国家级大学生创新创业项目(G2020107490010);宁夏回族自治区自然基金项目“滴灌条件下不同轮作模式对土壤硝态氮积累及氮肥后效响应机理研究”(2022AAC3451)。

摘　　要：针对宁夏银北盐碱地改良面临的技术瓶颈,利用现代粉垄耕作技术,以传统耕作为对照,开展了不同粉垄深度(40 cm、45 cm、50 cm)对盐碱地土壤pH值、全盐含量及碱化度的影响研究。结果表明,与传统耕作措施相比,玉米生长期不同粉垄深度土壤全盐含量降低13.0%~51.1%,其中:粉垄深度45 cm表层(0~20 cm)土壤pH值、全盐含量、交换性Na^(+)分别降低0.9%、51.1%和16.7%。与传统耕作措施相比,玉米收获期粉垄深度40 cm处理土壤pH值降低0.09~0.4;粉垄深度50 cm处理表层(0~20 cm)土壤pH值增加了0.21,20~100 cm剖面土壤pH值降低了0.08~0.62。粉垄深度40 cm、50 cm处理均显著降低了0~40 cm土层土壤全盐含量和交换性Na^(+)含量,降幅分别为7.0%~25.0%和16.7%~55.6%;增加了40~80 cm土层交换性Na^(+)含量。同时,粉垄措施也显著降低了0~60 cm剖面土壤碱化度,降幅在17.7%~34.5%,其中:粉垄深度40 cm较对照未粉垄表层0~20 cm土壤耕层碱化度降低20.8%,20~40 cm和40~60 cm剖面土壤碱化度也分别降低了19.3%和34.5%。In view of the technical bottleneck faced by the improvement of Yinbei saline-alkali land in Ningxia,modern powder ridge cultivation technology was used to compare the effects of different powder ridge depths(40 cm,45 cm,50 cm)on soil pH,total salt content and alkalization.The results showed that compared with traditional cultivation measures,the total salt content of the soil at different powder ridge depths during the corn growth period decreased by 13.0%to 51.1%.Among them,the soil pH,total salt content,and exchangeable Na^(+)content of the surface soil(0 to 20 cm)of the 45 cm powder ridge depth decreased by 0.9%,51.1%and 16.7%respectively.During the corn harvesting period,compared with traditional cultivation measures,the soil pH of the 40 cm powder ridge depth treatment decreased by 0.09 to 0.4;the soil pH of the surface soil(0 to 20 cm)increased by 0.21 in the 50 cm powder ridge depth treatment and decreased by 0.08 to 0.62 in the soil profile layers of 20 to 100 cm.The powder ridge depths of 40 cm and 50 cm significantly reduced the total salt content and exchangeable Na^(+)content of the soil layer of 0 to 40 cm,with reductions of 7.0%to 25.0%and 16.7%to 55.6%respectively,while increasing the exchangeable Na^(+)content of the soil layer of 40 to 80 cm.At the same time,the powder ridge measures also significantly reduced the alkalization degree of the soil profile of 0 to 60 cm,with a reduction of 17.7%to 34.5%.Among them,the alkalization degree of the surface soil layer of 0 to 20 cm in the 40 cm powder ridge depth treatment decreased by 20.8%,and the alkalization degree of the soil profile layers of 20 to 40 cm and 40 to 60 cm also decreased by 19.3%and 34.5%,respectively.

关 键 词：粉垄 盐碱地 土壤 PH值 全盐含量 碱化度 

分 类 号：S147.2[农业科学—肥料学]