鼠茅草生草对苹果园土壤理化性质的影响

Effects of Vulpia myuros C.Gmelin Planting on Physical and Chemical Properties of Soil in Apple Orchard

近年来,大量研究表明果园生草具有改良土壤结构,提高土壤肥力的生态效益。为研究苹果园种植鼠茅草对土壤pH、容重、孔隙度,有效氮、有效磷、速效钾含量和有机碳含量的影响,本试验以清耕处理为对照,设置鼠茅草生草处理,在种植鼠茅草两年后对果园土壤的上述指标进行了测定。结果表明,鼠茅草生草处理能显著提高表层土壤毛管孔隙度、土壤硝态氮及0~20 cm和0~40 cm土层中土壤的有机碳含量,显著降低表层土壤的容重,但对铵态氮、有效磷和有效钾含量基本无影响。

In recent years,ecological benefits of improving soil structure and soil fertility from orchard grouing grass has been studied frequently.To study the effect of Vulpia myuros C.Gmelin planting in apple orchard on soil pH,soil bulk density,soil porosity,soil available nitrogen,soil available phosphorus,soil available potassium and organic carbon content,in this experiment,clear tillage treatment was used as the control in apple orchards,and the above indexes of orchard soil were measured after two years of Vulpia myuros C.Gmelin planting treatment.The results showed that the content of nitrate nitrogen and organic carbon in surface soil with capillary porosity was significantly increased,and the content of soil organic carbon in surface soil with 0-20 cm and 20-40 cm was significantly decreased,but the content of available phosphorus and available potassium in ammonium nitrogen was not affected.