【摘要】 对人工种植在碱斑草地上的星星草在不同年份相同生育期的土壤养分状况进行研究 ,并与天然状况的星星草地在各个生育期的土壤养分相比较。种植星星草后 ,随着星星草种植年限的增加 ,0～ 1 0cm土壤中 :有机质含量和土壤全氮含量呈上升趋势 ,土壤全磷含量略有增加 ,土壤全钾含量变化不明显 ;而土壤全钠含量、全钙含量以及土壤全镁含量都有不同程度的降低。更多还原

【Abstract】 In the present paper, nutrient of soil salinity on planting Puccinellia tenuiflora in same , and various age are studied, and compared with Puccinellia tenuiflora in the natural soil. With the time increasing of planting Puccinellia tenuiflora, in 0～10cm soil , organic matter content and total nitrogen content are trend to raised , total phosphorus content are raised a little; total potassium content are changed on clearly , total sodium content , total calcium content and total magnesium are reduced in varying degrees.更多还原