在印度喀拉拉邦条件下用不同化学药剂诱导菠萝开花的试验结果表明,1月份用药较11月份用药更能提前开花。在上述两个季节施用250ppm的乙烯利诱导菠萝开花的效应最佳。混合施用50ppm乙烯利、2%尿素和0.04%碳酸钙的效果与单施250ppm乙烯利的相同。用20ppmPlanofix处理的菠萝果实最大。单施或混施生长调节剂及化学药剂的处理均未改善菠萝果实的品质。 The results of experiments on pineapple flowering induced by different chemicals under the condition of Kerala in India showed that the drug was more premature flowering in January than in November. Applying 250 ppm of ethephon in the above two seasons induced the best pineapple flowering. The combined effect of 50 ppm ethephon, 2% urea and 0.04% calcium carbonate was the same as for 250 ppm ethephon alone. Pineapple fruit treated with 20 ppm Plaphenix was the largest. Single or mixed growth regulators and chemical treatment did not improve the quality of pineapple fruit.