4个木薯优良品种在怒江干热河谷的试种初报

Preliminary trials of 4 quality cassava varieties in the Salween river dry-hot valley

对引进的4个木薯品种[KU50(Ⅱ)(由泰国引进)、南植188、华南7号、华南205]在怒江干热河谷的适应性作了研究,结果表明:南植188的多项地上部分生物量测定值是4个品种中最优的,地下部分的平均单株鲜薯重量及每667 m2理论产量比其他3品种更高。KU50(Ⅱ)的分枝数、鲜薯个数最多,干物率最大,鲜薯淀粉含量最高而且氢氰酸含量最低;而华南205的干片淀粉含量最高;华南7号理论产量居第2位。南植188最适合在怒江干热河谷种植,KU50(Ⅱ)与华南205深加工的经济效益相对较高,具有较高的推广价值,华南7号推广价值一般。

Study on the adaptability of four intrduced cassava varieties： KU50 （Ⅱ）,nanzhi188,SC7,SC205 in the Salween River dry-hot valley,the results as follows： Many of the ground biomass measured of nanzhi188 are the best. The fresh weight per plant and the theoretical yieht per mu of nanzhi 188 are higher than the others. The KU50 （Ⅱ）＇s branches and fresh roots are more than the others, the rate of dry matter and the content of starch in fresh root are the highest but the content of hydrocyanic acid is lowest. The SC5＇s starch content in dry chip of root is the highest. The SCT＇s theoretical yield is the second. To sum up, nanzhi188 is suitable for cuhivation in the Salween River dry-hot valley; KU50 （Ⅱ） and SC205 have relatively high economic benefits for deep processing. All the three have higher value to promote but the SC7 has lower value to promote.