不同温度和土壤含水量对油松种子萌发的影响

摘要

为了探索油松种子萌发对温度和水分调控的响应,开展了6个温度梯度和6个土壤含水量条件下的油松种子萌发对比试验.结果表明:6个温度条件下,发芽率排序为25℃>30℃>35℃>20℃>40℃>15℃;6个土壤水分条件下,发芽率排序为25％>30％>20％>35％>15％>40％.温度和水分是影响油松种子萌发的重要因素.%In order to explore the adaptability of seed germination of Pinus tabulaeformis on temperature and moisture control, comparison experiments of seed germination of Pinus tabulaeformis were conducted under six temperatures gradient and six soil water content. Result shows that under the condition of constant temperature, the descending order of seed germination is 25℃ >30℃ >35℃>20℃ >40℃ >15℃; under the condition of soil water, the seed germination rate is 25％>30％>20％>35％ >15％>40％. The temperature & moisture are the important factors affecting the germination of the seeds.