沙田柚在不同砧木上的早期表现

供试品种为沙田柚，砧木材料２８个，以酸柚砧作对照，研究了不同砧木上沙田柚树体生长发育，产量的早期表现。经过７年的观察分析，初步认为关云大叶枳，江津大叶枳，多花枳，朱砂柑、摩洛哥酸橙对沙田柚有早结，矮化作用。定植后第３年试花，第４年开始结果，结果最多的是关云大叶枳，株产达４个，树体高度比对照矮１１．８％￣２１．０％，产量比对照高２４０％￣６００％，其余砧木都比对照结果迟。

Performance in the Early Stage of Shatian Pummelo Grafted on Different Rootstocks

Experimental variety was Shatian pummelo. Twenty eight experimental rootstocks were Ichang papeda,Citrange,Xiangchen(citrus junos),Morocco Sour orange,Xiaohongchen (propably an hybrid of sour orange),Trifoliate orange,Kumquat,Severinia buxifolia etc. Contrast rootstock was sour pummelo. The growth and yield situation of Shatian pummelo grafted on different rootstock were studied through seven years. The results indicated that Shatian pummelo grafted on Guanyun large leaf trifoliate orange,Jiangjin large leaf trifoliate orange,polyflower trifoliate orange,Zhushagan(C. reticulata) and Morocco Sour orange have early bearing and dwarfing. After be planted,Shatian pummelo grafted on these rootstocks flowered in the third years and borne fruit in the forth years. Shatian pummelo grafted on Guanyun large leaf trifoliate orange borne more fruits than the others,which borne 4 fruits per tree and the height of tree is most dwarf as compare with the control.