根据罗山县历年马尾松毛虫观测资料,将马尾松毛虫的发生级别分为4级,应用马尔可夫链对罗山县2009-2011年发生级别进行预测,结果均为1级;应用2004-2008年历史资料进行检验,准确率为100%。
The occurrence level of dendrolimus punctatus was dividec 4 according to the previous data of Luo Shan County.The forecast level was 1 level by means of Markov chain in 2009-2011.The simulation forecast accuracy of 2005-2008 was 100%.