缩节胺对番茄穴盘幼苗生长的影响

Effect of Mepiquat Chloride on the Growth of Tomato Plug Seedlings

以番茄品种＂秦优粉霸101F1＂为试材,采用不同浓度缩节胺（30、50、70、90、110mg/kg）对播种前育苗基质进行浇灌处理,研究其对番茄幼苗的影响。结果表明：缩节胺能有效控制番茄的生长速度,浓度越高矮化作用越明显。播种前使用50mg/kg的缩节胺溶液底液浇灌处理的番茄幼苗株高、茎粗、下胚轴长和生理指标均在壮苗指标范围内,幼苗表现良好。其次是浓度70mg/kg处理效果也较好。该试验推荐在播种前使用50~70mg/kg的缩节胺溶液底液浇灌育苗基质的方法,以控制番茄幼苗徒长,达到壮苗目的。

Taking tomato variety of‘Qinyou Fenba 101F1＇as test material,the experiment was carried out by ensuring that the growth media was thoroughly watered with varied concentrations of mepiquat chloride（30 mg/kg,50 mg/kg,70mg/kg,90 mg/kg and 110 mg/kg）before sowing.The results showed that the growth rate of tomato could be controlled effectively by the effect of mepiquat chloride on tomato seedling,with higher concentrations leading to more obvious effect.The concentration of 50mg/kg could have a major effect on the plant height,stem diameter,hypocotyl length,and chlorophyll content of tomato seedlings and thus made them stronger.Besides,the concentration of 70mg/kg could also contribute to strong seedlings.To prevent spindly growth and cultivating strong seedlings of tomato,it was recommended that concentration of mepiquat chloride be applied at 50-70mg/kg.