一、育秧材料与设施选择1.基质柴米河牌水稻育秧基质具有如下优良特性:(1)良好的物理性状。固、液、气比例协调,总空隙度65%~72%。(2)化学性状。酸碱度适宜pH值5.5~7,早稻育秧基质pH值最好为5.5~6.5;氮磷钾养分平衡;缓冲性能好。(3)生物学性状。有机质25%以上腐植酸8%以上,物料稳定、不进行二 First, seedling materials and facilities selection 1. Substrate Chai Mi River rice seedling matrix has the following excellent characteristics: (1) good physical properties. Solid, liquid, gas, the proportion of coordination, the total porosity of 65% to 72%. (2) Chemical properties. PH value for pH value of 5.5 to 7, the best early rice seedling substrate pH value of 5.5 to 6.5; NPK nutrient balance; good buffer performance. (3) biological traits. More than 25% organic matter more than 8% humic acid, material stability, not two