PP333对曙光油桃生长结果和果实品质影响的研究

研究了不同时期、不同方式施用植物生长调节剂PP333对曙光油桃的枝梢生长、坐果率和果实品质的影响.结果表明:叶面喷施和土壤施入PP333,均可显著地抑制油桃的新梢生长,提高坐果率,增加果实的单果重和可溶性糖含量;以谢花期叶面喷施1000 mg/L的PP333的控冠效应最好,谢花期按树冠垂直投影面积施用0.5 g/m2多效唑有效成分土施,对提高曙光油桃的坐果率和果实品质的效果最好.

The Influence of Spraying PP333 on Growth and Fruiting and Fruit Quality of Shuguang Nectarine

The plant growth regulator PP333 was sprayed on Shuguang nectarine tree during the different growing periods with two methods in this experiment.The result showed that the fruit setting percentage,fruit weight,content of soluble solid was increased,also the growing of new branch was controlled.The treatment of 1 000 mg/L PP333,which was sprayed on leaves after flower falls,was the most effectively for controlling the growth of tree.The treatment of 0.5 g PP333 per square meter,which was sprayed into soil,was the best way to increase fruit setting percentage and fruit quality.