Abstract:

In order to research the optimum density of transplanting rapeseed in the Hilly Area of Sichuan Basin, the effects of different density to the stress resistance, agronomic traits and yield were studied by field experiment under growing field condition. The results showed that, the different density had an influence to the growth of rape. With the increasing planting density, the resistivities of Sclerotinia sclerotiorum, aphid and lodging level were declined. At the same time, the primary branch height raised, the length of main inflorescence, the total branches and total siliques of single were decreased. Both the total branches, total siliques and yield of total amounts were increased first and decreased later with increasing density. When the density was 105000 plants/hm2, it could reach the maximum yield, it was 2715.52 kg/hm2. The difference between 82500 plants/hm2 and 105000 plants/hm2 was not significantly. The optimum density of transporting rapeseed in the Hilly Area of Sichuan Basin was 82500 plants/hm2 to 105000 plants/hm2, the resistivities of Sclerotinia sclerotiorum, aphid and lodging level were better.