5DU Z Y,XING S J,MA B Y,et al. Effects of root pruning on the growth and rhizosphere soil character- istics of short-rotation closed-canopy poplar[J]. For- est Systems, 2012,21 (2) : 236-246.
6ZHANG R, PENG F R, YAN P, et al. Effects of Root Pruning on Germinated Pecan Seedlings [J]. Hortscienee, 2015,50(10) : 1549-1552.
7WANG Y, TRAVERS S, BERTELSEN M G, et al. Effect of root pruning and irrigation regimes on pear tree:growth, yield and yield eomponents[J]. Horti- cultural Science,2014,41(1) :34-43.
8YANG S J,DU Z Y,YU Y,et al. Effect of root prun- ing on competitive ability in Chinese jujube tree[J]. Fruits,2012,67(6) :429-437.
9YANG S,XING S,LIU C,et al. Effects of root prun- ing on the vegetative growth and fruit quality of Zhanhuadongzao trees [J]. Horticultural Science, 2010,37(1) : 14-21.
10RUS P, MEILING E, PEETZ J. Determination of germination percentage and germination index-collab- orative trial and ruggedness testing[J]. Journal of the Institute M Brewing ,1995,101(3) : 171-173.
