ZD-1804 数字式土壤速效氮-磷-钾-养分速测仪

ZD-1804 数字式土壤速效氮-磷-钾-养分速测仪范围: 0 - 1999 mg/Kg (mg/l).分辨率: 1 mg/Kg (mg/l).精确度: ±2 ...