mysql插入报错incorrect time value

为啥插入会报错

mysql> desc j;
+-------+------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+------+------+-----+---------+-------+
| date  | time | YES  |     | NULL    |       |
+-------+------+------+-----+---------+-------+
1 row in set (0.00 sec)

mysql> insert into j values ("2021-10-13")
    -> ;
ERROR 1292 (22007): Incorrect time value: '2021-10-13' for column 'date' at row 1