Effects of Organic Fertilizer Combined with Saline-alkaline Soil Amendments on Soil Properties,Sugar Beet Yields,and Quality in Saline-alkaline Land
Sugar beet is one of the pillar industries in Suzhou District,Jiuquan City,but the high salinity and alkalinity of the local soil severely restricts the high-quality development of the sugar beet industry,therefore,the need for saline-alkaline soil improvement is urgent.To provide scientific reference and technical support for saline-alkaline land reclamation and sugar beet cultivation,a three-year experiment(2020 to 2022)was conducted using the sugar beet variety Gantang 7 as the test material.The study investigated the effects of applying organic fertilizer combined with the'Hekang'saline-alkaline soil amendment on soil physicochemical properties,sugar beet yields,and quality.The results showed that compared to the control(without organic fertilizer or saline-alkaline soil amendments),applying 60 t/ha of organic fertilizer along with 30 kg/ha of'Hekang'saline-alkaline soil amendment(50% applied with water before planting and the remaining 50% applied with the second irrigation)significantly reduced soil salinity,pH,electrical conductivity,and bulk density,while increasing soil organic matter content and cation exchange capacity.These changes also improved sugar beet yield and quality in which soil salinity,pH,electrical conductivity,and bulk density were decreased by 38.7%,10.9%,23.2%,and 9.3%,respectively.Meanwhile,soil organic matter content and cation exchange capacity were increased by 39.1% and 10.8%,respectively,and sugar beet soluble solids content and yield were increased by 25.2% and 23.1% .This indicates that applying a certain amount of organic fertilizer combined with saline-alkaline soil amendments could effectively improve soil,increase crop yield,and enhance quality.
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