荔枝成花坐果影响因素研究

[目的]对不同荔枝品种进行促花和保花保果试验研究,为荔枝生产中促进成花坐果和高产稳产提供理论依据。[方法]采用环剥对三月红、妃子笑和桂味荔枝进行促花试验,采用环割和打孔处理三月红荔枝,采用SOD喷施鸡嘴荔。[结果]10月16日至11月16日对三月红、妃子笑和桂味荔枝进行环剥处理,其末次梢成花率分别达到68.27%、9.41%~50.52%、58.99%~83.61%,比对照分别提高了4.00、0.59~7.56、4.57~6.89倍;初花期对三月红进行环割和打孔处理后的每穂平均果数达到6.0~6.3,比对照提高了1.22~1.33倍,环割、打孔不影响果实的正常生长发育;小果期喷施0.25%~0.50%SOD后7~15 d能减少鸡嘴荔的落果,处理后15 d果穗平均小果数为8.5~10.6个,处理比对照提高了0.37~0.71倍。[结论]荔枝花芽生理分化期及之前环剥可明显提高成花,初花期环割和打孔能明显提高坐果,小果期喷施SOD能减少落果。

Preliminary Report on the Factor Affecting the Flower Formation and Fruit-setting of Litchi

[Objective] The theoretical basis of the improvement of the flower formation and fruit-setting of litchi(Litchi chinensis Sonn.) for its high and stable yield was provided through the experiment in its flower formation and fruit-setting.[Method] The experiment in the promotion of the flower formation of three litchi varieties: March Red,Feizixiao and Guiwei,was conducted based on the treatment of girdling technique;the March Red,the treatment of ring cutting and punching technique;and the variety-Jizuili,th...