rt索引不能使用中文

[6api]

plain索引正常，rt索引中文不行 rt索引，不管 chinese_dictionary 是否打开，都无法搜索中文，结果为空，英文可以

index rt
{
	# chinese_dictionary	= /usr/local/sphinx/etc/xdict
	min_word_len	= 1
	ngram_len		= 1
	ngram_chars		= U+3000..U+2FA1F

	type			= rt
	path			= /usr/local/sphinx/var/data/rt
	rt_mem_limit	= 512M

	rt_field			= name
	rt_attr_uint		= cid
}

[eric1688]

charset_type = utf-8加上试试