摘要
试验采用5种植物生长调节剂喷施龙眼夏秋梢,结果表明:(1)PP复合剂能明显地抑制新梢伸长,增加粗度,缩短节间长度,增加雌雄花比例,提高产量;抑制效应在药剂超过2000μg/g时,抑制强度与浓度升高不呈比例关系,并可能影响枝梢花芽分化;福眼品种耐药性超过东壁品种、柴螺品种对药剂反应最敏感,这与树势强弱可能有关;喷施枝梢比土施作用快,土施效果沙质地比红壤地明显。(2)ET复合剂浓度低于500μl/L能显著抑制枝梢伸长,缩短节间长度,增加粗度,提高雌雄花比例;但浓度超过600μl/L会杀伤和杀死枝梢顶芽。此药适于冬春季控梢控穗时采用。(3)CC复合剂对控梢促花似乎没有效果,各种浓度TIBA复合剂对龙眼枝梢的作用不呈现规律性。MH复合剂超过1000μg/g,对柴螺枝梢伸长和增粗都起抑制作用。
Shoots of E. Longana were treated by spraying with 5 plarit growth regulators. The results showed as follows:1. PP inhibited shoot elongation significantly, increased shoot thickening and leanes thickening increased the concentration of chlorophyll of leanes, improved flowering and increased the ratio of female to male flowers. But when the concentrations were over 2000 μg/g, flower bud differentiation could be inhibited.2. ET had the same improving effects on shoot growth of E. Longana when the treating concentrations were under 500 μl/L. But it could kill the buds on the top of shoots if the concentrations were over 600 μl/L.3. CC and TIBA had not much improving effects on E. Longana. And MH could inhibit both shoot elongation and thickening.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
1992年第4期84-92,共9页
Journal of Fujian Normal University：Natural Science Edition
关键词
植物
生长调节剂
龙眼
枝梢
plant growth regulator, Euphoria longana, shoot, inhibition
