不同用量土壤调理剂对包菜产量、土壤理化性状及重金属含量的影响

Effects of Different Dosage of Soil Conditioner on Cabbage Yield,Soil Physicochemical Properties and Heavy Metal Content

通过田间试验,研究施用土壤调理剂6水平用量(0、750、1 125、1 500、1 875和2 250 kg·hm^(-2))对包菜产量、土壤基本理化性状及重金属含量的影响。结果表明:与不施土壤调理剂处理相比,施用土壤调理剂的处理连续种植2茬包菜产量分别增加0.3%~19.1%和3.2%~20.7%;种植2茬后土壤pH值上升1.8%~18.8%,有效磷含量提高0.5%~5.4%,土壤有效铬含量降低6.0%~34.0%,但对土壤有效镉、有效铅、有效汞和有效砷含量的影响不大,综合得出,在本试验立地条件下,土壤调理剂最佳施用效果的用量为1 875 kg·hm^(-2)。

Effects of six dosages of soil conditioner(0,750,1125,1500,1875 and 2250 kg·hm^(-2))on cabbage yield,soil physicochemical properties and heavy metal content were studied through field experiment.The results showed that application of soil conditioner could make two successive planting of cabbage yield increase by 0.3%-19.1%and 3.2%-20.7%,respectively compared with no application.After two successive planting of cabbage,soil pH value rose by 1.8%-18.8%,available phosphorus content in soil reduced by 0.5%-5.4%,available chromium in soil reduced by 6.0%-34.0%.There were no significant effects on contents of available cadmium,available lead,available mercury and available arsenic in soil.Comprehensively,application of 1875 kg·hm^(-2) soil conditioner could produce the optimum effects.