能源与食用兼用型高淀粉红薯新品种夏种试验

Summer-planting experiment on energy and edible type sweet potato varieties with high starch

国家重视发展以薯类作物为原料的生物质能源,选育高淀粉高产红薯新品种是适应我国生物质能源发展的需要。在广西南宁地区,对筛选出的红薯(甘薯)新品种桂经薯3号、桂经薯5号进行夏种试验,结果表明,两个鲜薯淀粉含量分别达到29.5%和30.4%,鲜薯产量每公顷分别为30870kg和31875kg,属于高淀粉高产红薯品种,且适宜夏种。初步认为,这2个品种属能源与食用兼用型红薯品种,可作为生物质能源原料作物开发利用。同时还指出2个品种今后在广西作为生物质能源作物利用尚需进一步研究完善的问题。

Attention to developing biomass energy with potato crops as raw materials has been emphasized in China, therefore, breeding new high starch sweet potato varieties is adapt to the demand on developing biomass energy in China. In the experiment, two new screened sweet potato varieties Guijingshu No. 3 and No. 5 were planted in summer in Nanning, Guangxi. The results showed that the starch content of fresh potato for Guijingshu No. 3 and No. 5 was 29.5% and 30.4%, respectively; and the yield of fresh potato was 30870 kg/hm^2 and 31875 kg/hm^2, respectively; and both of them showed high starch and yield, which are suitable for summer-planting. Therefore, Guijingshu No. 3 and No. 5 were energy and edible type sweet potato variety concurrently and could be developed as biomass energy crop. Moreover, the existing problems for the two varieties used as biomass energy crops in Guangxi in the future was pointed out for further study.