《Table 7 Effects of spraying pokeberry root powder at different growing stages on Cd content in rice

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《叶面喷施植物营养剂、熟石灰、商陆根粉对水稻降镉效果的研究（英文）》

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As shown in Table 7，spraying pokeberry root powder on rice at the different growing stages could significantly（P<0.05）decrease the Cd content in root，stalk，leaf and brown rice，which was significantly different（P<0.05），obviously lower than that of the control.Compared with the control，Cd content in root system was decreased by 19.6%~38.4%，by 12.8%~35.8%in stalk，by 12.2%~48.1%in leaf，and by19.2%~53.4%in brown rice；the T7 had the biggest drop reduction of Cd and the Cd content in brown rice was the lowest with a drop of 53.4%than that of the control.This showed that the effects of spraying the suspension of pokeberry root powder on rice in the Cd content at the 3 stages which involve the tillering stage，the heading stage，the dough stage，were better than at the 2 stages involving the tillering stage and the heading stagewhich was better than at the one stage（tillering stage）.