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脱毒甘薯北京 5 5 3薯苗干物质的积累 ,在整个生育期内都明显高于对照 ,其分配规律为 ,前期以上部茎叶为主 ,中后期地下部块根积聚迅速增加 ,源库关系协调 .脱毒北京 5 5 3茎尖苗、原原种苗、原种苗的生物产量分别比对照高 5 1 3% ,45 7%和 2 2 7% ,经济产量分别比对照高 6 3 3% ,5 4 6 %和 2 3 7% ,经济系数也显著高于对照
The accumulation of dry matter of virus-free sweet potato Beijing 5 5 3 seedlings was significantly higher than that of the control during the whole growing period. The distribution pattern was mainly stems and leaves of the upper part of the early stage, the accumulation of roots in the underground part increased rapidly in the middle and late stages, Coordinated detoxification Beijing 5 5 3 Biological yield of stem-tip seedlings, original seedlings and original seedlings were 51.3%, 45.7% and 22.7% higher than that of the control respectively, and their economic yields were 6 3 3 higher than that of the control %, 54.6% and 23.7% respectively. The economic coefficient was also significantly higher than that of the control