Revised as: Dozens of Young Pioneers passionately recited poems dedicated to teachers.
Analysis: It belongs to improper collocation. Just change "poem" into "poem".
Extended data:
Improper collocation when modifying sick sentences;
1, improper collocation of related words.
2. The attributive and the head word (subject and object) are not collocated properly.
3. Improper collocation of verbs and objects.
4. Improper collocation of subject and predicate.
5, the host and guest are not properly matched.
6. Improper collocation of verbs and complements.
7. The adverbial and the head word (predicate) are not collocated properly.
8. One side and two sides are not properly matched.