农田飞虱种类及其灯下群落结构的初步研究

PRELIMINARY STUDIES ON THE SPECIES OF PLANTHOPPER IN CULTIVATED LAND AND ITS STRUCTURE OF THE COMMUNITY UNDER LIGHT TRAP

本文报道了广西农田飞虱科种类30属56种(同翅目),其中29种广西尚未记载。稻田区的主要种群是褐稻虱(Nilaparvata lugens),白背飞虱(Soga-tella furcifera),灰飞虱(Laodelphax striatellus)和稗飞虱(Sogatella longi-furcifera),蔗田区的主要种群是甘蔗扁飞虱(Eoeurysa flavocapitata)和中华扁飞虱(Perkinsiella sinensis),灯下飞虱群落结构成分主要由褐稻虱和白背飞虱种群组成,次为稗飞虱、褐背飞虱(Opiconsiva nigra),黑边黄脊飞虱(Toya pro-pinqua neopropinqua),拟褐飞虱(Nilaparvata bakeri)和伪褐飞虱(Nilapa-rvata nuiri)。灯下飞虱群落多样性指数以 9月份最高,数量以 7月份最大,群落的多样性与均匀度是极显著正相关。

Total of the planthoppers in cultivated land in Guangxi were reported. Among them, 29 species were unrecorded previously in the region. The main planthopper populations in rice field were Nilaparvata lugens, Soga- tella furcifera, Laodelphax striatellus and Sogatella longifurcifera. And those in sugarcane field were Eoeurysa flavocapitato and Perkinsiella sinensis. The main components of the planthopper communities under light trap were Nilaparvata lugens and Sogatella furcifera, the secondary components were Sogatella longifurcifera, Opiconsiva nigra, Toga propinqua neopropinqua, Nilaparvata bakeri and Nilaparvata nuiri. The diversities of the planthopper communities under light trap were maximum in September, but the numbers were the highest in July. The diversities were correlated with the evenness significantly and positively, but significantly and negatively correlated with the dominant concentration.