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乌桕(S.sebiferum Roxb)是一种重要的木本油料树种。在我国已有一千多年栽培历史。目前在我国秦岭、淮河以南各省均有栽培。浙江为全国乌桕重点产区,栽培几乎遍及全省,质量也为全国之冠。为了进一步发展乌桕生产,加强对乌桕生长发育研究,以便为造林及成年抚育工作提供理论依据,我们于1961年至1964年,在我院选葡萄桕和鸡爪桕两变种进行物候观察,同时在其中选六株壮年树,作定位观察其新梢生长、花序发育、开花、结果、果实发育到落叶休眠。现将调查和观测所得的初步结果作一汇报,请批评指正。
S. sebiferum Roxb is an important woody oilseed species. In our country more than a thousand years of cultivation history. Currently in our country Qinling, Huaihe provinces have been cultivated in the south. Zhejiang is the key producing area of Wuhu in Zhejiang province. Its cultivation is almost all over the province and its quality is the highest in the country. In order to further develop the production of the black jackfruit and strengthen the research on the growth and development of the black jackass in order to provide a theoretical basis for the afforestation and adult breeding work, we observed the phenology of the two varieties of grapefruit and chicken claw in our hospital from 1961 to 1964, Among them, six trees were selected for observation of the growth of new shoots, inflorescence development and flowering, and fruit development to fallen leaves dormancy. Let us now report the preliminary findings of the survey and observation. Please criticize and correct.