锯末育甘蓝苗一、基质准备。①锯末一定要过筛，除去木块、木片。②要加入充分腐熟的有机肥。有机肥和锯末的比例掌握在１∶３。每１０００平方米加５０公斤硝铵、５０公斤过磷酸钙、２５公斤氯化钾或相当于该含量的其它无机肥，以便合理利用肥效，充分供应幼苗所需养分。... Sawpao broccoli seedlings one, matrix preparation. ① sawdust must be sieved, remove the wood, wood. ② to join the full maturity of organic fertilizer. The ratio of organic fertilizer to sawdust lies at 1: 3. Add 50 kg of ammonium nitrate, 50 kg of superphosphate, 25 kg of potassium chloride or other inorganic fertilizers equivalent to this amount for every 1000 m2, in order to make rational use of fertilizer efficiency and fully supply the nutrients needed by the seedlings. ...