论文部分内容阅读
垄作是控制根部病害发生的有效措施,为了明确不同垄高对大豆根腐病的防控效果,本研究对5个不同垄高处理的大豆根腐病病情指数、根部生理指标、大豆产量进行测定。结果表明,在一定范围内,垄高越高,大豆根腐病防控效果越好。其中,垄高30cm处理在大豆苗期、花期、结荚期的病情指数均较低,防效、地下部鲜重等根部指标及产量均为处理中较高的,产量为2 917.87kg/hm2,与对照相比增产率达到17.07%,与垄高35cm处理差异不显著。垄高30cm处理土壤水分散失较快,能够降低土壤含水量,大豆根腐病得到很好的控制,同时还能增加产量,在根腐病发生严重的地区应大力推广。
In order to clarify the control effect of different ridge height on soybean root rot disease, the study determined the disease index, root physiological index and soybean yield of soybean root rot with five different ridge height treatments . The results showed that in a certain range, the higher the ridge height, the better the control effect of soybean root rot. Among them, the treatment of 30 cm ridge height showed lower disease index at seedling stage, flowering stage and podding stage, and the root indexes and yield of control effect and fresh weight of underground section were higher, with the yield of 2 917.87 kg / hm 2 , Compared with the control rate of increase of 17.07%, 35cm height and ridge treatment difference was not significant. Ridge height 30cm treatment of soil water loss faster, can reduce soil moisture, soybean root rot is well controlled, but also increase the yield, root rot in serious areas should be vigorously promoted.