【摘要】 在陇东旱塬区,根据多点小区试验数据,应用两种计算土壤养分校正系数的方法,进行了黄绵土小麦对土壤磷素养分校正系数的研究,采用12种数学模型研究出了小麦土壤磷素养分校正系数与土壤速效磷间的最佳模型。结果表明:两种方法计算的土壤磷素校正系数与速效磷含量之间均以幂函数(y=a.xb)相关性最好,为适应田间地头手工计算,这种相关性又可简化用两段直线描述,直线与曲线的拟合好,R2值在0.8以上。图8,表3,参5。更多还原

【Abstract】 Phosphorus proofread coefficient of loessial soil was studied based on two regular methods in dry area of eastern Gansu.And,the optimal model,which reflects the relationship among proofread coefficient of soil phosphorus and content proofread coefficient of soil phosphorus and content of readily available phosphorus,was developed depending on 12 kinds of models.The results showed that the power function(y=a·x~b)performed better relativity,and it can be described by two sect beelines,and they paralleled well,R~2 is more than 0.8.更多还原