多效唑对温室高羊茅生长的影响

摘要

Effect of paclobutrazol(PP333) on the growth of Festuca arundinace planted in greenhouse was studied by setting 3 spraying time and 4 concentration levels in contrast with Festuca arundinace not sprayed with PP333 to explore the best spraying time and the best concentration of PP333. The results show that spraying 100～200 mg/L PP333 at seedling stage has obvious effect on plant height, leaf width,stem diameter, aboveground biomass, and underground biomass of Festuca arundinace. Spraying time is the major factor affecting the growth of Festuca arundinace. The effect of PP333 on Festuca arundinace with the same treatment time increases with the increase of PP333 concentration.%为探索温室环境下培育高羊茅(Festuca arundinace)草坪使用多效唑(PP333)的最佳时期和浓度,以未使用多效唑为对照,通过3个使用时期梯度和4个使用浓度水平研究了多效唑对高羊茅生长的影响.结果表明,以苗期喷施多效唑100～200mg/L的效果最好,可明显影响高羊茅的植株高度、叶宽、茎粗、地上生物量、地下生物量.使用时期是影响高羊茅生长的主要因素,在相同处理时间内多效唑浓度越大,对高羊茅生长的影响越显著.