CAJ | 학술논문

间苗试验结果表明,黑麦草、鸭茅、鸭茅+黑麦草3组禾草种群对白三叶种间竞争力及构型影响显著.用Wilson的竞争指数及竞争平衡指数进行分析发现,黑麦草、鸭茅、鸭茅+黑麦草3组禾草种群对白三叶的竞争指数分别为0.32,0.47和0.71,禾草种群与白三叶之间的竞争指数及竞争平衡指数大小顺序均为鸭茅+黑麦草>鸭茅>黑麦草.随着种间竞争指数的增加,白三叶构件密度、分枝密度、分枝强度、分枝角度及构件能量减少,节间长度明显增加,根及单位长度茎的能量分配及生殖分配下降.
간묘시험결과표명,흑맥초、압모、압모+흑맥초3조화초충군대백삼협충간경쟁력급구형영향현저.용Wilson적경쟁지수급경쟁평형지수진행분석발현,흑맥초、압모、압모+흑맥초3조화초충군대백삼협적경쟁지수분별위0.32,0.47화0.71,화초충군여백삼협지간적경쟁지수급경쟁평형지수대소순서균위압모+흑맥초>압모>흑맥초.수착충간경쟁지수적증가,백삼협구건밀도、분지밀도、분지강도、분지각도급구건능량감소,절간장도명현증가,근급단위장도경적능량분배급생식분배하강.
The result of experiment of plant thinning showed that the competition between three groups of grasses (Lolium perenne, Dactylis glomerata, D. glomerata+L. perenne)and Trifolium repens was significant, so was the effect of the competition on the architecture of T. repens. The order of competitive balance index were, D. glomerata+L. perenne>D. glomerata>L. perenne so was the competitive index with the value of 0.32, 0.47, 0.71, respectively. With the increase of competitive index of grasses and T. repens, either density of architecture and branch, or branching intensity,branching angle and caloric content of T. repens decreased while the internode length increased significantly. The trend of change of energy allocation of root and stem of certain length was the same of that of the density of architecture.