| To investigate the effects of transplanting density and number of seedlings per hole on the yield traits such as dynamic changes of stem tiller, maximal leaf area index and dry matter accumulation, the rice variety Mudanjiang 32 was used in this study. The results showed that the highest dynamic changes of stem tiller number of rice population was detected when seedlings were planted 4～6 plants per hole, and the transplanting density model was 36 cm×12 cm, which was consistent with the conventional cultivation way. The maximal leaf area index could be significantly enhanced by increasing the number of seedlings per hold, which relied on the increase of stem tiller number per square meter, whereas increasing cover area per hole would lead to low leaf area index. The dry matter weight at maturation had no significant correlation with the number of transplanting plants and area of each hole. Path analysis showed that dry matter weight tended to increase with the addition of transplanting plants in each hole, while expansion in area of each hole showed an opposite effect. The stem tillers number, dry matter weight at maturation and maximal leaf area index every square meter were significantly or extremely significantly positively correlated with the yield. It was further concluded that the most suitable transplanting models for Mudanjiang 32 were to employ a planting population of 4～6 plants per hole, and a transplanting density of 40 cm×10 cm or 30 cm×12 cm, resulting in yields of 8 635.4 kg·hm-2 and 8 634.0 kg·hm-2, respectively. There was no difference between these two transplanting models, but they were significantly better than the other models. |