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一、多效唑的增产作用多效唑应用水稻,增产作用明显。水稻产区一般增产10%左右。此外它还有抑制杂草,减轻病害,提高水稻抗寒力,因此颇受农民欢迎。二、多效唑作用机理(一)抑制植物体内赤霉素的合成,赤霉素是植物的重要激素,对植物生长,长高有重要作用。水稻体内赤霉素减少,茎,叶伸长减慢,养分重新分配,用到叶片,叶鞘变宽,变厚上去,分蘖增加,蘖位变低。秧苗变矮,变壮,发根力增强,返苗快,最后穗数增加,抗倒伏能力加强。(二)对杂草的生长抑制性较强,秧田使用多效唑,杂草长不大,表现出很好的防草效果。
First, the role of paclobutrazol production of paclobutrazol application of rice, increased production significantly. Rice production generally increase about 10%. In addition, it also restrain weeds, reduce disease and improve the cold hardiness of rice, so popular with farmers. Second, paclobutrazol mechanism of action (A) inhibition of plant gibberellin synthesis, gibberellin is an important hormone in plants, plant growth, long play an important role. The gibberellin decreased, the stem and leaf elongation slowed down, the nutrients were redistributed, the leaves were used, the sheaths became wider and thicker, the tillers increased, and the tiller position became lower. Seedlings become shorter, stronger, hair root strength increased, fast seedling back, the last increase in spike number, anti-lodging ability. (B) strong inhibition of the growth of weeds, seedling field with paclobutrazol, weeds grew up, showing good anti-grass effect.