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甘薯开花与結实习性的观察 一 甘薯在烟台地区的自然条件下,一般不能开花,即使偶尔开花亦不能結实。唯有少数品种如石家庄351等能在本地区自然条件下开花结实,并经測定其自交結实率达到26.7%。一九六一年以胜利百号进行了嫁接(利用牵牛花做砧木,采取劈接法嫁接)、短日照(8小时光照)、强短日照(6小时光照)、嫁接+短日照(即重复法)、环剝、倒插、直插(对照)等处理试验观察。结果以采用嫁接并
Observation on sweetpotato flowering and fruiting habits One sweet potato in Yantai area under the natural conditions, generally can not flowering, even if the occasional flowering also can not be strong. Only a few varieties, such as Shijiazhuang 351, can flowering and fruiting under natural conditions in the region, and its self-fertility rate is 26.7%. In 1961, it was grafted with Victory 100 (using morning glory as rootstock and grafting), short day (8 hours light), short day light (6 hours light), grafting + short day light Repeated method), girdling, inverted interpolation, in-line (control) and other treatment experiments. Results to adopt grafting and