干旱地区农业研究2025，Vol.43Issue(4)：91-99,131,10.DOI:10.7606/j.issn.1000-7601.2025.04.10
不同浓度淀粉加工废水还田对土壤物理性状及马铃薯产量的影响
Effects of varying concentrations of starch processing wastewater returning on soil physical properties and potato yield
摘要
Abstract
To address the issue of starch processing wastewater discharge in the local potato industry of Gansu Province,the potato variety'14W-5'was used as the experimental material.Seven irrigation treatments were ap-plied in 2023-2024:CK(clear water),T1(150 m3·hm-2 of potato starch processing wastewater),T2(300 m3·hm-2),T3(600 m3·hm-2),T4(900 m3·hm-2),T5(1 200 m3·hm-2),and T6(1 500 m3·hm-2).The study aimed to investigate the effects of returning starch processing wastewater to the field on soil physical properties and potato yield.The research results showed that:(1)Starch processing wastewater returning significantly affected soil water content.Compared with the control,the moisture content of 0～20 cm soil layer was increased by 0.75%to 3.76%after returning starch processing wastewater to the field in the first year of irrigation,and the moisture content of 0～30 cm soil layer was increased in different degrees in the second year of irrigation,with the increase rate of 0.06%to 4.17%.(2)Starch processing wastewater returning promoted the formation of≥5 mm and 2～5 mm mechanically stable macroaggregates in 0～30 cm soil layer and reduced the proportion of<0.25 mm water-sta-ble microaggregates.With the increase of irrigation years,the positive effect of starch processing wastewater on im-proving soil physical properties expanded from 0～20 cm soil layer to 0～30 cm soil layer.(3)When the amount of wastewater returning to the field was less than 300 m3·hm-2,the yield-increasing effect was sustained and signifi-cant,and the commercial potato rate was maintained at a high level.When the amount of wastewater returning to the field was higher than 300 m3·hm-2,the field rot rate of potato tubers was significantly increased.When the a-mount of starch processing wastewater returning to the field was 300 m3·hm-2,the yield of irrigation for 1 year and 2 years was significantly increased by 73.09%and 17.84%,respectively,compared with the control,and the potato commodity rate was significantly increased by 39.65%and 19.37%,respectively.It is evident that the return of starch processing wastewater to the field has a positive effect on improving soil properties and crop yield.It is rec-ommended that the application threshold for local potato starch processing wastewater should not exceed 300 m3·hm-2,which can help achieve cost savings and enhance efficiency of potato industry in Gansu Province to a certain extent.关键词
马铃薯/淀粉加工废水/废弃物资源化利用/土壤物理性状/产量Key words
potatoes/starch processing wastewater/waste resource utilization/soil physical property/yield分类
农业科技引用本文复制引用
闫承宏,袁安明,杨建禄,张丽娟,史晓鹏,张小静,唐彩梅..不同浓度淀粉加工废水还田对土壤物理性状及马铃薯产量的影响[J].干旱地区农业研究,2025,43(4):91-99,131,10.基金项目
甘肃省科技厅乡村振兴专项(25CXNJ019) （25CXNJ019）
定西市科技重点技术攻关专项(DX2023AZ17) （DX2023AZ17）
