风沙土添加油页岩对土壤肥力及燕麦生长的影响

Effects of Oil Shale on Soil Fertility and Oat Growth in Sandstorm Soil

为了研究油页岩对风沙土改良及燕麦苗期生长的影响,试验采用室内盆栽试验的方法将油页岩用量设5个处理(0,15,30,60,100 g/kg),施入风沙土并种植燕麦。结果表明:风沙土施用油页岩能够改良土壤理化性质,显著提高土壤的供肥保肥能力,能有效促进燕麦幼苗生长,尤其是促进了根系生物量和叶片生物量的积累,具有显著的壮苗作用。但从根冠比和茎叶比两项指标对油页岩不同施用量的响应效果来看,在油页岩施用量较高的情况下,燕麦幼苗表现出了抗逆性生长趋势,这可能与油页岩本身酸碱度(pH值)较高有关。因此,在应用油页岩改良风沙土实际过程中,须谨慎使用注意用量,或经有效处理后再行开发利用。

With pot experiment,The effects of adding oil shale to aeolian sandy soil on the growth of oat seedling stage were investigated,The oil shale addition was divided into five treatments:0,15,30,60,100 g/kg.The application of oil shale in sandstorm soil can improve the physical and chemical properties of soil,significantly improve the ability of soil fertilizer supply and preservation,effectively promote the growth of oat seedlings,especially promote the accumulation of root biomass and leaf biomass,and have a significant seedling strengthening effect However,from the response of root-shoot ratio and stem-leaf ratio to different application rates of oil shale,oat seedlings showed a trend of stress-resistant growth when oil shale was applied at a higher rate.It may be related to the high pH of the oil shale.Therefore,in the actual process of applying oil shale to ameliorate aeolian sandy soil,attention should be paid to the use of dosage carefully,or the exploitation and utilization should be carried out after effective treatment.