Abstract:

Three factors and three-level orthogonal experimental design was used in this test. The results indicated that: The plant height, LAI, dry weight per plant was all changed obviously along with the changes of different genotype varieties, densities, row spacing. Therefore, different population structures affected the soybean growth and development very large, which were all reached 0.05 or 0.01 significant level. That is to say, the population structure and soybean growth and development had very close relationship. Therefore, the use of dwarf varieties, increase density, reduce the row spacing was an important way to increase soybean yield.