Abstract:

In order to improve the utilization rate of northwestern Guizhou region winter rice paddies, by research optimal no- tillage planting technology of broad bean after rice, variety, density and seeding time were taken as research object, orthogonal design method with 3 factors and 4 levels was adopted to study the effect of the three factors on broad bean yield. The results showed that, the greatest impact on yield was seeding time (R=177.3), followed by the variety (R=163.5), and finally the density (R=134.9) in the three factors. Zhijin broad bean, 35 cm × 35 cm and October 28th were the best variety, density and seeding time of optimal combination of maximum yield.