多效唑药害植株矮小,块根块茎小、畸形,叶片卷曲,哑花,基部老叶提前脱落,幼叶扭曲、皱缩。矮壮素药害植株严重矮化,果枝不能伸展。叶片畸形,出现鸡爪叶,赘芽丛生,果枝节间过短,植株枝叶发脆、易折。浸种药害,种子根部弯曲,幼叶严重不长,出苗推迟7天左右,苗出土后呈扭曲畸形。矮壮素对双子叶植物易产生要害,对单子叶植物不易产生要害。乙烯利药害 PP333 has the advantages of short stubble plants, small tuberous tuber, abnormal deformity, curly leaves, dull flowers, premature shedding of basal part of old leaves, twisting and shrinkage of young leaves. CCC plant serious dwarf plants, fruiting branches can not stretch. Leaf deformity, there chicken feet, buds bud clusters, fruit branches too short, plants crisp leaves, easy to fold. Seed soaking injury, seed root bending, young leaves are not serious, emergence delayed for about 7 days, Miao was deformed after distraction. Chlormequat easy to produce dicotyledons, monocotyledon is not easy to produce the key. Ethephon injury