Effect of Winterizing Facility Topping on Broad Bean Yield and Yield Factors

With a split-plot design,in 2011-2012,various factors were selected for the control plot,as well as the subplots,to study their effects relating to the yield of 6 broad bean varieties(i.e.,the medium grain Haimendaqingpi,the small grain Qidou 2 and the big grain Tongxian 1,2 and 3,and Tongcanxian 6).The preliminary results showed no significant differences on plant height among different varieties.However,the yield,biomass and harvest index were significantly different.The yield and weight per pod of the varieties bred by the Institute,such as Tongxian 1,2,3 and Tongcanxian 6,were significantly higher than local varieties.The topping on the winterizing facility decreased the plant height and biomass,while increased the yield and harvest index.It suggested that the broad bean cultivation benefited ecologically as well as economically by adding a topping to the winterizing shed