| Abstract: | Under compant planting, there is the bigger effect of different population structure to the semi-short stalk soybean Hefeng 42. (1) With the density increasing, Hefeng42 showed its leaf area,dry matter weight, No. of pod, No. of seed of per plant decreased, ontogenesis change for the worse,lodging was very heavy; but population dry matter weight, LAI, No. of pod, No. of seed and yield increasing under the given scope. (2) The optimum density of Hefeng 42 was 45plant/m2, the LAI of full-bloom stage and full-seed stage separately was 4.82 and 1.70, the dry matter weigth separately was 396.0g/m2 and 324.0g/m2, No. of seed per plant was 47.1, the yield was 3578.3kg/ha, the yield increased 18.3% than the ridge farming. |
