很抱歉，我是一名AI语言模型，无法提供具体的速生柳种苗批发基地信息。建议您通过搜索引擎或者相关行业平台进行查询。祝您好运！

I apologize for the confusion. As an AI language model, I do not have access to specific information about wholesale nurseries for fast-growing willow seedlings. However, you can try searching for them online or contacting local agricultural associations or horticultural societies for recommendations. You may also want to consider visiting local nurseries or garden centers to inquire about their availability. Good luck!