土壤改良剂PAM在生土改良中的应用及效果  

Application and Effect of Soil Conditioner PAM in Improve Immature Soil

作　　者：邵社刚[1] 李婷 朱立安 曾清苹 倪栋[1] 林梓 SHAO Shegang;LI Ting;ZHU Li′an;ZENG Qingping;NI Dong;LIN Zi(Key Laboratory of Road Traffic and Environmental Protection Technology,Ministry of Transport,and Research Institute of Highway,Ministry of Transport,Beijing 100088,China;National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China,Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management,Institute of Eco-environmental and Soil Sciences,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]交通运输部公路科学研究院公路交通环境保护技术交通运输行业重点实验室,北京100088 [2]广东省科学院生态环境与土壤研究所/华南土壤污染控制与修复国家地方联合工程研究中心/广东省农业环境综合治理重点实验室,广州510650

出　　处：《西南师范大学学报（自然科学版）》2023年第6期97-103,共7页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：广东省重点领域研发计划(2020B020214001);海南省自然科学基金(421RC658);国家自然科学基金项目(41771232);公路交通环境保护技术交通运输行业重点实验室项目资助。

摘　　要：以狗牙根为供试作物,通过盆栽试验,研究不同聚丙烯酰胺(polyacrylamide,PAM)用量与蚯蚓粪、复合生物菌剂混施对新造生土作物生长和土壤养分的影响.结果表明,与CK处理相比,不同用量PAM配合施肥处理的狗牙根地上部和根系生物量均显著增加,与CK处理相比增幅为36.1~48.7,3.8~8.4倍,根冠比显著降低83.1%~92.3%,以0.1%PAM处理狗牙根生物量最高;PAM处理显著增加了土壤全磷、碱解氮含量,以0.1%PAM处理增幅最高,分别为12.3%和119.0%;土壤>0.25 mm水稳性团聚体含量显著增加20.2%~70.6%,以0.3%PAM处理为最大值.综合而言,以PAM施用量0.1%对狗牙根生长的促生作用和土壤全磷、碱解氮含量的培肥作用最佳,以0.3%对土壤水稳性团聚体改良作用最好.Bermudagrass was used as the material and a pot experiment was conducted to explore the effects of polyacrylamide(PAM)mixed with the vermicompost and compound biological inoculants on plant growth and soil nutrients of immature soil.The results showed that compared with CK treatment,the shoot and root biomass of Bermudagrass were significantly increased under the PAM mixed with the vermicompost and compound biological inoculants treatments,which was 36.1~48.7 and 3.8~8.4 times of CK treatment,respectively,while the root-shoot ratio was about 83.1%-92.3%lower than the CK.The biomass of Bermudagrass reached the highest under the 0.1%PAM treatment.The contents of soil total phosphorus and alkali-hydrolyzed nitrogen were significantly increased under PAM treatments,AND the highest increasing rate was under 0.1%PAM treatment,which were 12.3%and 119.0%,respectively.The>0.25 mm water stable aggregates content was significantly increased by 20.2%~70.6%under PAM treatment,and reached the highest under the 0.3%CMC treatment.In conclusion,the 0.1%PAM treatment had the best effect on the growth promotion of bermudagrass and the increase of soil total phosphorus and alkali-hydrolyzable nitrogen content,while the best effect on the improvement of soil water-stable aggregate was 0.3%.

关 键 词：土壤改良 聚丙烯酰胺 生土 狗牙根 土壤养分 团聚体 

分 类 号：S156[农业科学—土壤学]