不同种植方式花生生育后期湿涝胁迫对产量及保护性酶系统的影响

Effect of Waterlogging Stress on Peanut Yield and Protective Enzyme System in Different Planting Patterns

为解决花生主产区生育后期因多雨易涝造成的花生减产问题,采用模拟人工淹水逆境的试验方法,研究花生不同生育时期湿涝胁迫对不同种植方式下花生产量及保护性酶系统的影响。结果表明,湿涝胁迫处理的花生产量较正常水分条件下平均降低13.62%,湿涝胁迫条件下,起垄种植较平作增产16.60%。花生植株受到水淹胁迫后,叶片SOD活性增加,POD、CAT活性下降,MDA含量上升,且平作处理的变化程度大于垄作处理,结荚期水淹处理的变化程度大于成熟期水淹,表明平作栽培条件下湿涝胁迫的危害程度大于起垄栽培,结荚期湿涝胁迫的危害程度大于成熟期。因此,在多雨易涝的花生产区,宜进行起垄种植,以降低湿涝胁迫的危害。

Experiment was conducted to study the effect of waterlogging stress on physiology and yield of peanut in different growth stage.Using the method of artificial flooding,the effects of waterlogging stress on peanut yield and protective enzyme system were studied in different planting patterns.The results showed that the waterlogging stress treatment led to 13.62% of yield loss compared with the control group.Under waterlogging stress conditions the yield of ridge planting was improved by 16.60% as compared with flat planting.Waterlogging stress increased the SOD activity and MDA content.It also decreased the POD and CAT activities.The impact of waterlogging was larger in pod setting stage than maturation stage,and it was also more harmful in flat planting than ridge planting.To reduce the damage of waterlogging stress,ridge planting pattern is recommended in rainy and waterlogged peanut areas.