A STUDY ON SPATIAL DISTRIBUTION PATTERN OF POLYGONUM LAPATHIFOLIUM L. IN VEGETABLE PLOT

Spatial distribution pattern of Polygonum lapathifolium L. is determined in vegetable plot. The results show that it displays as the negative binomial distribution by determination of frequency distribution and fits to the pattern of aggregation by the test of distribution pattern indices. The linear regression equation of Iwao's - can be described as =4.2135+1.24, so it fits to the negative bionomial distribution with the public K value. The reason for the aggregation is analyzed according to estimation by mean aggregation (λ). The theoretical sampling number model is also built up in the present paper.