巨尾桉瓶内菌根化组培苗的造林效应

Effectiveness of in vitro Mycorrhizal Inoculation of Tissue Cultured Eucalyptus grandis×E.urophylla in Field Trials

1993～ 1994年 ,在广东省开平市国营镇海林场建立了 2个巨尾桉组培苗瓶内接种外生菌根菌的野外造林试验。 2个试验中 ,共采用 17个外生菌根菌菌株。造林后定期观测了 12或 2 4个月树高、地径和胸径等生长指标。试验结果表明 :除试验 2造林初期的树高外 ,其他所有生长指标在菌根菌处理间均有极显著差异或显著差异 ,菌根菌间对巨尾桉生长有不同的影响 ;从多重比较和接种效果分析看 ,菌株E4 0 70、H4 5 0 9、E4 2 4 0、H6 177、H4 339、E4 72 6、C930 1、C92 13和C92 0 3,在造林后 6个月开始可明显地促进巨尾桉树木生长 ,说明组培苗瓶内菌根化技术是完全可行的 。

In 1993 and 1994,two inoculation experiments of clonal Eucalyptus grandis×E.urophylla tissue culture plants,inoculated in total of 16 ectomycorrhizal fungi from Australia and China,in tissue culture containers,were established at Zhenhai State Forest Farm,Kaiping,Guangdong,China.After planting,tree height(H),diameter at ground level(D)and diameter at breast heigh(DBH)were measured at regular intervals.From 6 months after planting,all indices(H,D,DBH)showed significant growth increase due to inoculation( P =0.01 or P =0.05).Based on Duncan's Multiple Range Test (method),isolates E4070,H4509,E4240,H6177,H4339,E4726,C9301,C9213 and C9203 clearly improved tree height and diameter,indicating that these ectomycorrhizal fungi were effective on Eucallyptus grandis×E.urophylla trees.