9个木薯新品种在北海的适应性研究

目的]筛选适宜北海推广的木薯品种。方法]以我国目前9个主要的优良木薯新品种为材料,以当地品种SC205作对照,测定其鲜薯产量、淀粉含量、淀粉产量等农艺经济性状,观察其分枝情况和薯形等生物学特性,综合评价9个木薯新品种。结果]新选048的鲜薯产量极显著高于对照,南植199和GR891鲜薯产量极显著低于对照,其他6个品种鲜薯产量和对照差异不显著,但GR911和桂热3号的鲜薯产量较高;9个品种的淀粉含量均等于或高于对照,其中GR891和桂热5号淀粉含量最高,桂热3号、SC8、南植199和GR911的淀粉含量较高;桂热4号的淀粉产量显著低于对照,其他8个品种的淀粉产量与对照差异不显著,但桂热3号、桂热5号、SC8、新选048和GR911的淀粉产量较高;新选048、南植199、GR911、桂热3号和桂热5号分枝少或不分枝,种植与收获时省工,适合密植和间套作,而SC5和SC8分枝较多;新选048和GR911薯形粗短,薯形好,适合机械化生产。结论]新选048、GR911、桂热3号和桂热5号综合性状较好,适宜在北海推广。

Study on the Adaptability of Nine New Cassava Varieties in Beihai

Objective]To select cassava varieties which were fit for extending in Beihai.Method]With 9 major superior new cassava varieties of China as the materials and the local variety SC205 as control,their fresh root yield,starch content,starch yield,branching and other agronomic and economic traits were measured,the 9 new varieties of cassava were comprehensively evaluated.Result]The fresh root yield of Xinxuan 048 was significantly higher than that of SC205,while the fresh root yield of Nanzhi 199 and GR891 were significantly lower than that of SC205,and that of other 6 varieties were not significant higher or lower than that of SC205,but the fresh root yield of GR911 and GR3 were pretty high.Starch content of 9 varieties were equal to or higher than that of the control,the highest was found in GR891 and GR 5,following by GR3,SC8,Nanzhi 199 and GR911.The starch yield of GR4 was significantly lower than that of SC205,while the starch yield of other 8 varieties was not significantly different from that of SC205,starch yield of GR3,GR5,SC8,Xinxuan 048 and GR911 was much higher than SC205.Xinxuan 048,Nanzhi 199,GR911,GR3 and GR5 had little or no branching,which saved lots of labor cost for planting and harvesting and were suitable for close planting and intercropping.SC5 and SC8 were branching varieties.The roots of Xinxuan 048 and GR911 were big and short in quite pretty good root shape,which were suitable for mechanized planting.Conclusion]Xinxuan 048,GR911,GR3 and GR5 with good comprehensive properties were suitable for extending in the Beihai.