| 摘要: |
| 【目的】研究不同波长光谱对灰茶尺蠖成虫生物学习性的影响，为灰茶尺蠖的绿色无公害防控提供参考。【方法】以室内鲜叶饲养5代的灰茶尺蠖成虫为材料，设置黄光组、绿光组和对照组3个处理，具体处理方法为：白天（07：00―19：00），黄光组、绿光组和对照组灰茶尺蠖成虫均用普通日光灯照射（光照强度150~200 lx）12 h；夜间（19：00―07：00），黄光组成虫用黄光（波长590~595 nm）持续照射12 h（光照强度为50~100 lx），绿光组成虫用绿光（波长520~525 nm）持续照射12 h（光照强度为50~100 lx），对照组成虫黑暗12 h，分析不同光谱处理对灰茶尺蠖成虫产卵情况、寿命以及卵孵化率和成虫羽化率的影响。【结果】与对照组相比，黄光组、绿光组灰茶尺蠖成虫的总产卵量分别下降了24.05%和32.97%，且与对照组差异达显著水平（P＜0.05）；黄光组和绿光组灰茶尺蠖成虫单雌最高产卵量、产卵率和卵孵化率均显著下降。黄光和绿光处理对灰茶尺蠖成虫的产卵前期影响不显著；但其平均产卵期显著缩短，分别较对照组缩短3.01和3.25 d。黄光组、绿光组和对照组灰茶尺蠖成虫的单雌产卵量高峰均出现在第4天，此时黄光组和绿光组灰茶尺蠖成虫的单雌产卵量均显著低于对照组。与对照组相比，黄光组和绿光组灰茶尺蠖雄虫和雌虫的寿命均显著缩短，但2种光谱处理间无显著差异。经黄光和绿光处理后，灰茶尺蠖成虫的羽化率分别下降了45.18%和29.76%，且与对照差异显著。【结论】不同波长光谱对灰茶尺蠖的生物学习性有明显影响，于茶园内夜间提供黄光或绿光照射，能扰乱灰茶尺蠖的发育节律，减少其种群数量，从而达到绿色防控的目的。 |
| 关键词: 光谱 灰茶尺蠖 产卵量 卵孵化率 成虫寿命 |
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| 基金项目:国家重点研发计划项目“茶园化肥农药减施增效技术集成研究与示范”（2016YFD0200900）；信阳农林学院青年教师科研基金资助项目（2018LG003）；旱区作物逆境生物学国家重点实验室开放课题（CSBAA2019008） |
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| Effects of yellow and green light on biological habit of Ectropis grisescens Warren |
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QIAO Li,,HONG Feng,JIN Yinli,et al
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| Abstract: |
| 【Objective】This study aims at analyzing biological habit of Ectropis grisescens Warren adults under laboratory conditions,so as to provide reference for effective control of pest population.【Method】Five generations of E.grisescens reared in fresh leaves were treated with yellow light,green light and control.Nine groups of adult E.grisescens were fed in pairs.During daytime (07:00-19:00),they were irradiated by common fluorescent lamp (light intensity 150-200 lx) for 12 h.At night (19:00-07:00),yellow light (wavelength 590-595 nm) was continuously irradiated for 12 h (light intensity 50-100 lx) in the yellow light group.Green light (wavelength 520-525 nm) was continuously irradiated for 12 h (light intensity 50-100 lx) in the green light group,while the control group kept dark for 12 h.The effects of different treatments on oviposition and life span of adult E.grisescens as well as egg hatching rate and pupa emergence rate after treatment were analyzed.【Result】Total egg number of E.grisescens was reduced by 24.05% (yellow light) and 32.97% (green light) in with significant difference from the control.The pre-oviposition period was insignificantly affected,while average spawning period was significantly reduced by 3.01 and 3.25 d,respectively.The maximum egg production amount,egg production rate and egg hatch rate of adult E.grisescens in the yellow and green light groups all decreased.The spawning peak in treatment groups occurred on the 4th day,which was consistent with the control.However,total egg number in the treatment groups was significantly lower than the control.The longevity of female and male of E.grisescens decreased significantly without significant difference between treatments.The eclosion rates of the yellow and green light groups were significantly reduced by 45.18%(590-595 nm) and 29.76% (520-525 nm),respectively.【Conclusion】Spectral treatments at different wavelengths had significant effects on biological parameters of E.grisescens Warren.Yellow or green light at night in tea garden could disturb development rhythm and reduce amounts of E.grisescens Warren to meet the goal of green prevention and control. |
| Key words: spectrum Ectropis grisescens Warren egg quantity egg oviposition rate adult longevity |
