这不起作用，因为您需要当前存储作为此类操作的管理存储.

This doesn't work because you need the current store being the admin store for this kind of operation.

要使特定商店视图使用给定属性的默认值:

To make a specific store view use the default value for a given attribute:

Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

$product = Mage::getModel('catalog/product')
    ->load($product_id)         // in your case: 1
    ->setStoreId($store_id)     // in your case: 3
    ->setData($attr, false)     // in your case: 'name'
    ->save();