好吧，看来还是可以的.在为catalog_product_load_after 事件添加观察者后，可以使用Mage_Catalog_Model_Abstract 类的lockAttribute 方法将产品属性设为只读.下面是观察者方法的代码:

OK, it looks like it can be done after all. After adding an observer for the catalog_product_load_after event, the lockAttribute method of the Mage_Catalog_Model_Abstract class may be used to make a product attribute read-only. Here is the code for the observer method:

public function lockAttributes($observer) {
    $event = $observer->getEvent();
    $product = $event->getProduct();
    $product->lockAttribute('attribute_code');
}