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多效唑(MET)是八十年代初国内合成的新型高活性植物生长调节剂。具有增强抗逆性,缓解秧苗顶端生长优势,促进根系生长,侧芽(分蘖)滋生和早生快发等生物学效应。这项化学控制技术于1988年引入我市,在水稻秧田和直播田,分别进行多效唑的苗床喷洒、浸种的六处试验,均表现出矮化秧苗,叶片宽短、叶厚浓绿、低位分蘖增多、根系发达、早熟增产等效果。采用多效唑处理的秧苗,株高降低8—9.5厘米,控高率25％左右,每株增加分蘖1—1.6个,根增长8厘
Paclobutrazol (MET) is a novel and highly active plant growth regulator synthesized in China in the early 1980s. It has the biological effects of enhancing the resistance, alleviating the growth of the top of the seedling, promoting the growth of the root system, breeding of lateral buds (tillers) and quickening of early birth. The chemical control technology was introduced into our city in 1988, in the rice seedling field and direct seeding field, respectively, the paddy seedbed spraying, soaking seed six tests showed dwarfed seedlings, leaf width short, dark green thick leaves, low tillers Increased, root system, early maturity and other effects. The use of paclobutrazol treatment of seedlings, plant height reduction of 8-9.5 cm, the control rate of about 25%, an increase of 1-1.6 tillers per plant, the root growth of 8%