免追肥,养根,促根,多生侧枝,促根瘤生长发育,补充腐殖酸磷钾及微量元素技术指标: 腐殖酸≥30g/L、黄腐酸≥10g/L、磷≥80g/L、钾≥120g/L、Zn≥8g/L、Mo≥2g/L、Fe≥10g/L