5Toropova GN. The effectiveness of combined application of growth regulators on the growth of young cultivar Lobo apple trees[J].Plodovodstvo-V-Nechernozemnoi-Polose,1988,51~56.
6Wertheim S J. Combination of thinning agents is the future[J].Fruitteelt Den Haag,1998,88(16):22~23.
7Williams KM.Peach bloom delay using fall applications of Ethrel and Pro-Gibb[J].Acta Horticulture,1989,254:154~156.
8Rojas W U,Solidum P P.Effects of different ethrel concentrations on the flowering and fruit setting of pineapple[J].MU-Journal of Science (philipines)1990,3(2):25~32.
9Obrero I Q.Effect of low concentration ethephon as flower inducers for Queen pineapple[J].Philippine Council for Agriculture,forestry and Natural Resources Research and Development.Dept of Science and Technology,PCARRSD-DOST,2000,11~12.
10Singh D B,Singh V.Flowering and fruiting in Kew pineapple as affected by plant growth regulators[J].Indian Journal of Horticulture,1999,56(3):224~229.