植物生长调节剂PP333对凯特杏生长效应研究

Growth Effects of Plant Growth Regulator(PP333)on Prunus armeniaca L.‘Katy'

凯特杏幼树营养生长旺盛,单一靠修剪技术难以实现早期结果丰产,在科学合理修剪的基础上,应用植物生长抑制剂PP333进行调控,结果表明:凯特杏施用PP333后,新梢长度明显降低,粗度增加减缓,节间短,花芽数明显增加,单果质量增加明显,单株产量显著增加;施用植物生长抑制剂PP333能促进凯特杏幼树由营养生长向生殖生长转化,提高产量和经济效益。

The vegetative growth of saplings for Prunus armeniaca L.‘Katy’are vigorous;vegetative pruning tech-niques are difficult to achieve bearing and high-yielding.In a scientific and rational pruning,Prunus armeniaca L.‘Katy’was conducted regulation by applying plant growth inhibitors (PP333).Result shows that:after Prunus ar-meniaca L.cv.Katy was applied PP333,new shoot length are significantly lower,the increase of roughness slow down,internodes are shorter,the number of flower buds increase significantly,per fruit weight increase significant-ly;yield per plant increase significantly;the saplings of Prunus armeniaca L.Katy can be converted from vegetative growth to reproductive growth by applying PP333;the yield and economic benefit of Prunus armeniaca L.Katy can be increased by applying PP333.