甘蔗叶上的微小蜂，有些是帮助抑制害虫的天敌。本片介绍螟黄赤眼蜂，一种寄生害虫卵的有益昆虫。
Some tiny wasps on cane are natural enemies that suppress pests. Trichogramma chilonis is a beneficial parasitoid of insect eggs.
中英文字幕 · 每部约2分钟 · 无配音 / No narration。GAKI 会员登录即可观看；下载需要至少1贡献值。 / Sign in to watch; downloads require at least one contribution point.
症状与作用
SIGNS AND ROLE
甘蔗叶上的微小蜂，有些是帮助抑制害虫的天敌。本片介绍螟黄赤眼蜂，一种寄生害虫卵的有益昆虫。
Some tiny wasps on cane are natural enemies that suppress pests. Trichogramma chilonis is a beneficial parasitoid of insect eggs.
发生与来源
CONTEXT AND ORIGIN
它作用于适合的寄主卵，并不钻进蔗茎追杀大幼虫。不同蜂种和品系适合的寄主不同，使用前先核对。
It attacks suitable host eggs, not large larvae deep inside stalks. Check the parasitoid species, strain and suitable host before use.
生活史与过程
LIFE CYCLE AND PROCESS
雌蜂寻找虫卵，把自己的卵产入寄主卵内部。后代利用寄主卵发育，从而阻止被寄生卵正常孵化。赤眼蜂的幼虫和蛹藏在寄主卵里，不在叶上结大茧。部分被寄生卵会变暗，但颜色不能单独证明蜂种。成熟成蜂从寄主卵中羽化，再寻找适合的新虫卵。写实特写用于理解过程，蜂种确认仍需专业鉴定。
A female finds a host egg and lays an egg inside it. Its offspring develop inside, preventing normal host hatching. Wasp larvae and pupae develop within eggs, without large leaf cocoons. Parasitized eggs may darken, but colour cannot identify the wasp. Adult wasps emerge from host eggs and search for new hosts. These close-ups explain the process; species identification needs expertise.
调查与确认
INSPECTION AND CONFIRMATION
使用蜂卡前，核对来源、批次、羽化质量和保存条件。不要把失活蜂卡当成有效释放，也不自行跨境引种。
Before use, check card source, batch, emergence quality and storage. Inactive cards are ineffective; do not introduce agents across borders yourself.
预防、管理与复查
PREVENTION, MANAGEMENT AND FOLLOW-UP
释放时机要与寄主卵期对应，并按当地方案布放。避免不兼容的用药影响小蜂，具体安排询问当地人员。复查寄生和新危害，不能仅凭放了多少蜂卡判断效果。把天敌利用与田间管理结合，效果需要持续记录。
Time placement to suitable host eggs under a local programme. Avoid incompatible pesticide exposure; coordinate with local advisers. Check parasitism and fresh injury, not just the number of cards. Combine biological control with crop management and continuing records.
观察细节 / Look closely
图片为AI教学重建，非实拍标本或显微照片，不按比例；不能单凭图像确诊。 / AI teaching reconstructions, not authenticated specimens or microscopy; not to scale.
参考资料 / References
- ICAR-Sugarcane Breeding Institute — Biocontrol research in Indian sugarcane
- Laboratory development and emergence of T. chilonis in host eggs
- Original research — Insecticide toxicity to T. chilonis
科普教学资料，专家审核尚未完成。管理措施需结合本地诊断和技术指导。 / Educational material; expert review pending. Use local diagnosis and agronomic advice.