http://reply.papertrans.cn/2/152/15170/15170-11.png
Submitted on: 21 June 2013.
Revised on: 04 August 2013.
Accepted on: 18 September 2013.
___________________JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS
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http://reply.papertrans.cn/2/152/15170/15170-14.png
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http://reply.papertrans.cn/2/152/15170/15170-19.png
Submitted on: 22 December 2013.
Revised on: 07 February 2014.
Accepted on: 21 March 2014.
___________________JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS