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(1)经过1961--1963年人工控制光照试验,我们在南宁自然条件下,成功地促进15个甘蔗品种分别于9、10月间开花。(2)细茎品种比粗茎品种容易促进开花,可能是后者发育需要的光,温,湿等条件比前者严格,在人工控制条件下,不易满足的缘故。(3)甘蔗不是长日照作物,也不是短日照作物,而是中间性作物;每天的光照时间从12小时半为适宜。(4)我们试尝甘蔗有性杂交,1962年获得了3个杂交组合,共培育出实生苗184株。1963年获得8个杂交组合,其中7个组合的种子发芽。
(1) After artificial illumination tests conducted in 1961-1963, we succeeded in promoting the 15 sugarcane varieties to bloom in September and October in Nanning under natural conditions. (2) The thin stems tend to promote flowering more than the stem ones, which may be the light required by the latter development. The conditions such as temperature and humidity are more stringent than those of the former ones. Under the conditions of artificial control, they are not easily satisfied. (3) Sugarcane is not a long-day crop, nor a short-day crop, but an intermediate crop; the daily light duration is suitable from 12 hours and a half. (4) We tried sexual crosses of sugarcane, obtained three hybrid combinations in 1962 and cultivated a total of 184 seedlings. In 1963 8 hybrid combinations were obtained, of which 7 combinations of seeds germinated.