乌桕(Sapium sebiferum(L.)Koxb)是我国重要的木本油料树种之一。它的种子富含桕油(青油)和桕脂(皮油),广泛用于化学工业、油漆工业和国防工业。选用良种是乌桕增产的一项重要措施。在相同的自然条件和栽培措施下,选用良种可以获得优质高产。特别是在目前生产管理水平较低的情况下,利用良种的种性获得增产,更具有现实意义。浙江为全国乌桕重点产区,全省桕籽总产量约占全国三分之一,质量也为全国之冠。在一千余年的栽培历史过程中,受着复杂的自然条件和长期异花授粉以及人们在较低的生产水平的 Sapium sebiferum (L.) Koxb is one of the most important woody oilseeds in China. Its seeds are rich in emu oil (greasy oil) and tallow (skin oil), widely used in chemical industry, paint industry and defense industry. The selection of elite seeds is an important measure to increase the output of talons. In the same natural conditions and cultivation measures, the selection of high-quality seeds can be obtained. Especially in the current situation of low production management level, it is more practical to use the species of seed to increase yield. Zhejiang is the key producing area of ​​Wuhu in Zhejiang Province, and the total output of goblets in the province accounts for about one third of the country’s total. The quality is also the highest in the country. In more than a thousand years of cultivation history, subject to complex natural conditions and long-term cross-pollination and people at lower production levels