摘要
为了解决中国西北干旱及半干旱地区沙漠边缘地带沙土漏水漏肥严重、水肥利用率低等问题,以纯沙土(CKⅠ)及纯沙土+无机肥(CKⅡ)为对照,将优选复合材料(钠基膨润土+菌渣+腐植酸)设置了5种施用量梯度,即S1(纯沙土+无机肥+10%优选复合材料)、S2(纯沙土+无机肥+15%优选复合材料)、S3(纯沙土+无机肥+20%优选复合材料)、S4(纯沙土+无机肥+25%优选复合材料)及S5处理(纯沙土+无机肥+30%优选复合材料),通过甜高粱盆栽种植试验,探究其对沙土理化性状的影响。结果表明:S4及S5处理沙土容重降低至0.8g/cm^(3),相对湿度提高至60%,达到无旱标准;三个时期S1~S5处理沙土有机质、阳离子交换量、全氮、速效氮、速效磷、速效钾含量均显著高于CKⅠ和CKⅡ(P<0.05),大小顺序为:S5>S4>S3>S2>S1。研究表明:S1~S5处理均可在一定程度上改善沙土理化性状,且效果随着施用量的增加而增强,但后期还需从供试植株生长情况,并结合成本及生产实际进行综合评判,研究结果可为西北区生态修复、沙产业可持续发展及乡村振兴提供策略和依据。
In order to solve the problems of serious water and fertilizer leakage and low utilization rate of water and fertilizer in sandy soil in arid and semi-arid desert areas of northwest China.In this study,pure sandy soil(CKⅠ)and pure sandy soil+fertilizer(CKⅡ)were taken as controls,the optimized composite(sodium bentonite+mushroom residue+humic acid)was set up with 5 kinds of application rate gradient,which are S1(pure sandy soil+fertilizer+10%optimized composite),S2(pure sandy soil+fertilizer+15%optimized composite),S3(pure sandy soil+fertilizer+20%optimized composite),S4(pure sandy soil+fertilizer+25%optimized composite)and S5 treatment(pure sandy soil+fertilizer+30%optimized composite).The pot planting experiment for Sorghum dochna was conducted to explore the effect of optimized composite on the physical and chemical properties of sandy soil.The results showed that the bulk density of sandy soil treated with S4 and S5 treatment decreased to 0.8 g/cm~3,and the relative humidity increased to 60%,which reached the drought-free standard.The contents of soil organic matter,cation exchange capacity,total nitrogen,available nitrogen,available phosphorus and available potassium of sandy soil treated with S1~S5 were significantly higher than those of CKⅠand CKⅡin the three periods(the order is S5>S4>S3>S2>S1).This study shows that S1~S5 treatments can improve the physical and chemical properties of sandy soil to some extent,and the effect is enhanced with the increase of application amount.However,it is necessary to make a comprehensive evaluation from the growth of the tested plants,combined with the cost and production practice in the later stage.The research results can provide strategies and basis for ecological restoration,sustainable development of sand industry and rural revitalization in northwest China.
作者
王瑛
刘津岐
楚光明
刘永萍
陆学良
沈强
王梅
WANG Ying;LIU Jinqi;CHU Guangming;LIU Yongping;LU Xueliang;SHEN Qiang;WANG Mei(Agricultural College of Shihezi University,Shihezi 832003;Xinjiang Academy of Forestry Sciences,Urumqi830017;Guoping Bentonite Mine,Qi County831800,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2022年第8期169-175,共7页
Journal of Arid Land Resources and Environment
基金
新疆维吾尔自治区重点研发计划项目(2019B00005)资助。
关键词
水肥资源
天然钠基膨润土
菌渣
盆栽
沙土改良
西北干旱区
water and fertilizer resources
natural sodium bentonite
mushroom residue
potted plant
sandy soil improvement
northwest arid region
