桃一点叶蝉的发育起点温度与有效积温

The threshold and effective accumulative temperature for the development of Erythroneura sudra

本研究测定了桃一点叶蝉的发育起点温度和有效积温。结果表明,桃一点叶蝉各虫态(龄)的发育起点温度分别为:卵(4.33±0.08)℃、1龄若虫(4.78±0.32)℃、2龄若虫(3.05±0.22)℃,3龄若虫(3.78±0.28)℃、4龄若虫(5.00±0.31)℃、5龄若虫(5.00±0.26)℃、成虫产卵前期(3.63±0.56)℃、全世代(8.33±0.05)℃;有效积温分别为:卵(333.33±3.75)℃、1龄若虫(108.70±3.54)℃、2龄若虫(121.95±2.93)℃、3龄若虫(121.95±2.83)℃、4龄若虫(108.70±3.83)℃、5龄若虫(166.67±3.00)℃、成虫产卵前期(40.32±4.20)℃、全世代(833.33±6.00)℃。根据福建省福安市气象资料和桃一点叶蝉的越冬习性,推算出桃一点叶蝉在福建省福安市年发生5-6代。

Erythroneura sudra was a major peach post. According to the test results, the threshold temperatures were （4.33 ±0.08） ℃ for the eggs, （4.78 ±0.32 ） ℃ for the first instar nymphs, （3.05 ±0.22） ℃ for the second instar nymphs, （3.78 ±0.28） ℃ for the third instar nymphs, （5.00 ±0.31） ℃ for the fourth instar nymphs, （5.00 ±0.26） ℃ for the fifth instar nymphs, （3.63 ± 0.56） ℃ for the preoviposition period and （8.33 ±0.05） ℃ for the whole generation. The effective accumulative temperatures were （333.33 ±3.75） ℃ for the eggs, （108.70 ± 3.54） ℃ for the first instar nymphs. （121.95 ± 2.93） ℃ for the second instar nymphs, （121.95 ±2.83） ℃ for the third instar nymphs, （108.70 ±3.83） ℃ for the fourth instar nymphs, （166.67 ±3.00） ℃ for the fifth instar nymphs, （40.32 ± 4.20 ） ℃ for the preoviposltion period and （ 833.33 ± 6.00 ） ℃ for the whole generation. Based on the investigation of E. sudra annual life history and overwintering habits, it was concluded that the occurrence of E. sudra was 5 -6 generations annually in Fu＇an City of Fujian Province.