fuse-angular/src/assets/angular-material-examples/select-disabled/select-disabled-example.html

<p>
    <mat-checkbox [formControl]="disableSelect">Disable select</mat-checkbox>
</p>
<p>
    <mat-form-field>
        <mat-select placeholder="Choose an option" [disabled]="disableSelect.value">
            <mat-option value="option1">Option 1</mat-option>
            <mat-option value="option2" disabled>Option 2 (disabled)</mat-option>
            <mat-option value="option3">Option 3</mat-option>
        </mat-select>
    </mat-form-field>
</p>