<正>对用不同树种饲养的桑天牛雌性生殖系统进行解剖研究，证实桑天牛卵巢发育与补充营养直接相关。以桑树、构树为补充营养，雌成虫卵巢发育正常，能不断产生成熟卵。以苹果树、杨树饲养的雌成虫，卵巢管逐渐萎缩，不能产生成熟卵，已贮存于输卵管萼内的卵也不能产出。

The female reproductive system of adult Apriona germari (Hope) feeding on various trees isdissected. The results confirm that the ovary development is directly related to complemental nutrition. The ovaries of adults raised with white mulberry or paper mulberry can normally grow and continually produce mature ova.The ovarian tubes of the adults feeding on aspen or apple trees are gradually shrielled,which can not produce mature ova, so the eggs stored in egg-calyces will not lay out.