Abstract:
Based on the data of systematic abservation taken from the cucumber plants grown in glasshouses(unheated ), at west suburb of Tianjin, in 1986 and 1987, using m*-m method, the spatial distribution of cucumber plants infested by Polyph agotarson emus Latus(Banks) and sampling technique were studied. The results showed that the distribution pattern was an aggregated as the density was below 0.5271, but as the density increased, it then became uniform distribution; the sampling numbers varied with different infested degrees: as the degree becomes heavily, the number will go down evidently.
Key words:
Polyphagotarsonemus Lotus,
Spacial distribution aggregation,
Sampling technique,
Mean crowding
Chen Bingshu, Li Huili, Wang Huaiqing. Studies on the Spacial Patterns of Distribution of the Cucumber Plants Infested by Polyphagotarsonemus Latus and Sampling Technique[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(1): 96-101. doi: 10.3321/j.issn:1000-7091.1989.01.017.