Moreover,educe the limit water content value relatives to each classification for frost heaving,and also thc frost heaving susceptibility of each soil,and then compare them with the literature related to.

The pathogen caused blight disease on pepper was collected from 2005 to 2007 in Yunnan,and experiments were performed to identify the pathogen by using molecular technique and characterize the pathogen by investigating mating type and metalaxyl sensitivity.

By cluster-analysis system,these potato materials were classified into 3 groups based on different levels of frost tolerance: strong frost tolerance,medium frost tolerance,and frost sensitivity.