Alkyl ether sulfates having 1 to 9 carbon atoms in the alkyl chain and 1 to 20 alkyleneoxy units in the ether moiety are suitable for use as low-foam additives forenhancing the activity of water-soluble or partially water-soluble agrochemicals. They can be used to produce low-foam preparations for crop protection.烷鏈中具有1至9個碳原子且醚部分中具有1至20個伸烷氧基單位的烷基醚硫酸鹽適於作為加強水溶性或部分水溶性農樂活性的低泡添加劑。其可用以製造保護作物用的低泡製劑。