草坪坪床土壤培养与改良

建筑群周围的土地,经整理配置成不同的坪床,采用一般改良、彻底换土改良、缓冲降低盐碱含量等方法,对坪床土壤作了初步探讨,认为不论原有土壤基质的状况如何,彻底换土的效果较好,提出不同坪床基质上的土壤理化性状的要求幅度值:在一般干旱区经改良后,均应达到中壤土,pH 值在7.5以下,有机质在1.5%—2%之间。并提出为达到此标准而施用的基肥量,以及在生长期施用有效氮、磷、钾的用量与喷施微量元素的要求。

PREPARATION AND IMPROVEMENT OF LAWN SEED BED

The land around the structures was prepared to be lawn seed bed.Severalmethods (Normal,Replacing the soil and Reducing the salinity of soil by buffering) to im-prove the soil of lawn seed bed were discussed in the paper.The results showed that replac-ing the soil was most efficient regardless of the soil regime.After the improvement in aridarea,the soil physical and chemical characteristics of lawn seed bed should be similar toloam,and pH<7.5,organic matter at 1.5%-2.0%.For this purpose,manures,available ni-trogen,phosphate,potassium and micronutrients were quantified for different growingstages.