damping off of pine seedlings

例句：

1. 1.The young pines are experiencing a significant loss of seedlings due to the damping-off disease.
   年轻的松树由于病害而大量死亡。
2. 2. Researchers have identified several factors that contribute to the damping-off of seedlings in the forestecosystem.
   研究人员已经确定了几种因素，这些因素导致森林生态系统中幼苗的死亡。
3. 3.To prevent damping-off, it is important to maintain proper soil moisture levels and provide adequate nutrients for the seedlings.
   为了防止幼苗死亡，重要的是保持土壤湿度适宜并提供足够的养分给幼苗。