不同药剂对(木奈)李保花保果效应的研究

EFFECT OF FOUR CHEMICALS ON FLOWERING AND FRUIT-SETTING OF NAI-PLUM

以7～8年生毛桃砧(木奈)李为试材,在花蕾期和谢花期分别喷施强迫座果剂、硼酸、2,4-D和九二○进行保花保果。结果表明;4种药剂最佳的保花浓度分别为;900倍,0.1%,5×10^(-3)g/L,3×10^(-2)g/L,其中以900×强迫座果剂和0.1%硼酸的效果最好;最适保果浓度分别为:1 000倍,0.1%,6×10^(-3)g/L 和3×10^(-2)g/L,以6×10^(-3)g/L 2,4-D 效果最佳。前3种药剂对减少第一次生理落果效应明显,九二○对降低第二次生理落果的效应显著.

7～8 years old Nai-Plum(P.salicina Lind L.)trees on peach(A.Persica L.)were spraued wirh Zuoguobao(AGq),Boric Acid,2,4-D and GAs at the periods of buddingand defloration.The results in flowering and fruit-setting were as follows:①The bestconcentration of the 4 chemicals for flowering was:900×ZGq,0.1% Boric Acid,5×10^(-2)g/L,2,4-D and 3×10^(-2)g/LGAs,respectively.②THE best concentration of the 4 chemicalsfor fruit-setting was:1 000×ZGq,0.1%Boric Acid,6×10^(-3)g/L2,4-D had the highest ratioof fruit-setting.③By spyaying with ZGq,Boric Acid and 2,4-D,the first physiologica;fruitdrop could be decresed significantly.GAs Could decrease the second physioligicsl fruid drop.