Effects of Cultivation Pattern and Density on Canopy Structure and Yield of Soybean

In order to explore the effects of cultivation pattern and density on the canopy structure and yield of soybean,Kefeng 16 was used as experimental materials,the vertical distribution of leaf area index,pods number,pod dry weight and the yield of the soybean under different cultivation patterns as well as different densities were studied by using randomized block design in Inner Mongolia University in 2007～2008 year.The results showed that the vertical distribution of the leaf area index,pods number and pod dry weight were most reasonable and the yield was the highest in three rows on ridge under the different cultivation patterns and the yield was significantly sensitive to the different cultivation pattern.The leaf area index increased with the increasing of the density.Besides,the yield,pods number and pod dry weight increased with the increasing of the density between 300,000 plant·ha-1 and 360,000 plant·ha-1,then decreased under the density of 390,000 plant·ha-1,which indicated that the yield was the highest under the density of 360,000 plant·ha-1.