Abstract:
In order to explore the effects of cultivation patterns on growth tendency and yield of soybean in Nenjiang, discover the best field planting patterns for the region, Heinong 43 was used as material, seven different cultivation patterns were established, and we analyzed the changing trends of leaf area index(LAI), dry matter accumulation and distribution in different growing stages and the yield. The results showed that planting patterns had significant effects on soil moisture content, the average soil moisture content of large ridge planting in the whole growth period was higher than that of conventional ridge planting and flat sowing. In the growing stages, LAI and dry matter accumulation of soybean increased firstly and then decreased. The yield of ridge tillage was higher than flat planting. With the same row spacing, increasing ridge width will increased soybean yield. And with the same ridge width, the wide-narrow row treatment could increase the soybean yield. The grey correlation analysis showed, the seeds number per plant had the greatest impact on soybean yield.Under the treament four rows of wide-narrow on the 130 cm ridge, pods number per plant, seeds number per plant, and seeds weight per plant were the best. The final yield was 3 678.15 kg·ha
-1, it was 3.01%, 5.95% and 13.20% higher than large-ridge planting and small-ridge management, four rows of same row spacing on the 130 cm ridge, and three rows of same row spacing on the 110 cm ride, compared with other big ridge pattern. It was 7.97% higher than that of 65 cm conventional ridge tillage. In conclusion, under this experiment condition, four rows of wide-narrow on the 130 cm ridge was the suitable field configuration in Nenjiang.