Difference in influence of intercropping of tea plants with waxberry and citrus and snakegourd fruit plants respectively on numeral and spatial characteristics of population of citrus spiny whitefly

作者 Ye Huoxiang; He Xunmin; Han Baoyu

期刊 Journal of Anhui Agricultural University , 2010,2:37

摘要 In order to probe into the influence of intercrop of tea plants with some economic crops on the population numeral and spatial pattern of the important pest citrus spiny whitefly as well as to select the appropriate in-tercrop, Wuniuzao cultivar pure tea garden, Wuniuzao-citrus, Wuniuzao-waxberry, Wuniuzao-snakegourd fruit and Anjibaicha-snakegourd fruit intercrop tea gardens were chosen. The whitefly individuals within upper, middle and lower layer of tea clump were counted, and the aerial whitefly adults adjacent to tea shoots were caught by nets, from the early September of 2007 to the late December of 2008 at the interval of ten days. The results showed that: (1) Difference in the total whitefly individual number, the individual number within upper layer, the individual number within middle layer, and the individual number within lower layer of tea clump from 5 types of tea gardens reached the level of P > 0. 05, respectively; (2) The whitefly individual number in upper layer of tea clump of the two tea gardens intercropping snakegourd fruits markedly decreased; (3) Using the total individual number, the in-dividual number in the upper layer, the individual number in the middle layer, and the individual number in the lower layer as attributes, and the five types of tea gardens as entities, cluster analysis was executed. Wuniuzao pure tea garden, Wuniuzao-waxberry, and Wuniuzao-citrus intercrop tea gardens were classified as one type. The Wuni-uzao-snakegourd fruit and Anjibaicha-snakegourd fruit intercrop tea garden turned into one type, respectively. It is considered that the appropriate combination of tea with certain variety crop can inhibit the whitefly population, while the inappropriate combination of tea with some variety crop can promote the whitefly population, and intercropping can alter the vertical distribution of the whitefly.