Spatial structure and pattern of Nilaparvata lugens population in large-scale
Zhou, Q.; Zhang, R.; Gu, D.
Ying Yong Sheng Tai Xue Bao 12(2): 249-252
2001
ISSN/ISBN: 1001-9332 PMID: 11757373 Document Number: 534505
Brown planthopper(BPH), Nilaparvata lugens, is a major pest of rice. Its spatial distribution of different generations in Guangdong Province was studied by using variograms. The results showed that this population distributed in a clump pattern in rice fields during the 1st rice season. 3 generations of this population had different spatial structures, with the clump range of 400 km, 200 km and 205 km respectively in the 1st rice season. The simulation distribution maps of BPH, which was interpolated by Ordinary Kriging, showed that the density of BPH populations in west Guangdong province were higher than that in the east. The effect of sampling size on the spatial structure of BPH was not significant.