Studies on the characteristics and regulation technology of the large seed broad bean-'Dapengyicun' during flowering and podding stage

Large seed broad bean-'Dapengyicun' is green grain,sweet,high and stable yield and wide adaptability.Orthogonal design was used to study on the fresh pods yield of Dapengyicun' by foliage spray of different trace elements,topping,branch thinning and flower thinning during its flowering and podding stage.The results showed that spraying of trace elements B or B+Mo,topping,branch thinning,flower thinning could increase the fresh pods yield significantly,and the order of the yield is topping spraying of B+Mo branch thinning flower thinning spraying of B.The yield of topping is 13.38% higher than the no-topping,the yield of spraying of B+Mo is 7.87% higher than the no-spraying,the yield of branch thinning is 5.06% higher than the no-branch-thinning,the yield of flower thinning is 4.16% higher than the no-flower-thinning,the yield of spraying of B is 3.43% higher than the no-spraying.Comprehensive application of regulation technology such as trace elements spraying,topping,branch thinning and flower thinning,can increase the fresh pods yield beyond 28.62%.