我场赤泥尾林队今年一月下旬用塑料薄膜分床移植湿地松苗18,000株,用猪屎和过磷酸钙混合拌心土作基肥。分床后一个月,苗木普遍变成黄白色,不抽高。观察其原因,发现袋中的过磷酸钙因在拌肥的过程中没有充分打碎而很多呈小团粒状,苗根与粒状的过磷酸钙接触部位就变 Red mud tail forest I team in late January of this year with plastic film sub-bed transplant 18,000 wetland pine seedlings, mixed with pig feces and superphosphate mixed soil as a base fertilizer. A month after sub-bed, seedlings generally become yellow-white, not pumping high. Observe the reason and found that the bags of calcium superphosphate in the process of mixing fat did not break up a lot of small particles were granular and seedling root contact with granular calcium superphosphate changes