A board type 5 random sampling method (Gao and Pang 2006) was used according to the characteristics of Chinese wolfberry trees.
Distribution of pests in Chinese wolfberry growing area (P1) and degree of attention (P24) (derived from the Ningxia Academy of Agricultural Sciences Institute of Chinese wolfberry).
Taking Chinese wolfberry field pests sub- community as variables in the different management systems typical correlation analysis was done for abandoned field and conventional field abandoned field and organic field conventional field and organic field taking the correlation coefficient of each first pair of canonical variables.
P1###Distribution of pests in Chinese###Distribution of pests accounted for the distribution of Chinese wolfberry
The optimal separation method was used to deal with different management of Chinese wolfberry field pest sub-community separately to obtain the total variation of each section in each community (Table IV) and to analyze the determination of pest sub-communities in species composition and quantitative changes.
In the infancy stage (from March 28 to April 15) the weather gets warmer the soil is thawing Chinese wolfberry begins to sprout psyllids (jumping plant lice) climbing a tree to reproduce is the most representative characteristic of this stage other pests have not appeared.
Table IV.- Optimal separations of pests sub-communities in different management of Chinese wolfberry fields.
Correlation matrices of pest sub-community in different management of Chinese wolfberry fields were analyzed.
The disaster pest population dynamic curves under different management of Chinese wolfberry gardens are consistent.
palida propagated massively resulting in sharp increases in population size which was the exponential growth period of Chinese wolfberry pests.
Therefore it is best to control and cure the pest at the two period of time both the pest grow exponentially early period and the first group build period the first period is the later stage of infancy period of Chinese wolfberry to early stage of the first group build period of pest the second period is the later stage of the dormancy period of Chinese wolfberry to early stage of the outbreak period of pest.