The present invention relates to a method for improving the plant growth regulation of crop plants, by applying to the plants a mixture of a plant growth regulator, and cis-jasmone, and to a composition comprising the same.本發明涉及一種用於改進作物植物的植物生長調節之方法,這係藉由向該等植物施用植物生長調節劑、以及順式-茉莉酮的混合物來實現的,並且涉及包括它們的組合物。