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于甜菜叶丛繁茂期,喷施质量分数为1×10~(-4)～3×10~(-4)多效唑液可有效地控制植株地上部生长,降低茎叶产量与生物产量,但却增加了块根产量与含糖率。这表明多效唑具有促进光合产物向地下部运输的作用,块根增产5.6％～10.3％,糖度提高0.4°～0.8°。公顷产糖量增加8％～14.8％。
Spraying lettuce with mass fraction of 1 × 10 ~ (-4) ~ 3 × 10 ~ (-4) could effectively control plant shoot growth and decrease stem and leaf yield and biomass yield, Increased root yield and sugar content. This indicated that paclobutrazol could promote the transport of photosynthetic products to the underground. The yield of tubers increased 5.6% ~ 10.3% and the sugar content increased by 0.4 ° ~ 0.8 °. Hectare sugar output increased by 8% to 14.8%.