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I've found the answer, thanks @ceejep
I use --reuseaddresses option and set ticketfee to 0.05 when purchase ticket, but both of them is not work in v0.1.0.
ticket purchase transaction...
in version 0.6 or later, you can set the fee to purchase tickets. default fee is 0.05 dcr.
dcrctl --wallet setticketfee 0.05
and you can check...
VanQ, see https://wiki.decred.org/Introduction and https://wiki.decred.org/Solo_Stake_Mining
it will help you :)