青蒜翻压还田对连作西瓜叶片酶促系统及土壤质量的影响OA

Taking continuous-cropped watermelon cultivation as the test material,the effects of garlic rolling on the incidence rate of watermelon wilt disease,leaf enzyme systems,osmotic regulation substances,and soil physicochemical properties were investigated,in order to provide references for ecological watermelon cultivation.The results showed that after garlic rolling,the incidence of wilt in each treatment of watermelon was significantly lower than that in the control the activities of SOD,POD and CAT in the leaves were significantly higher than that in the control;the content of MDA in the leaves and the scavenge superoxide anion in each treatment were lower than that in the control,and the content of hydrogen peroxide in the leaves was significantly higher;the contents of proline,soluble protein and soluble sugar in each treatment were lower than that in the control,and the content in T2 was the lowest;the activities of polyphenolase,peroxidase,catalase and urease in the soil of each treatment increased,and the activity of sucrose decreased;the content of soil total nitrogen,total phosphorus and total potassium increased compared with the control.Planting watermelon after garlic rolling and returning to the field significantly inhibited the occurrence of waterm wilt,improved the activity of antioxidant enzymes in watermelon leaves,reduced the accumulation of membrane oxidation products,increased the content of osmotic adjustment substances in leaves soil enzyme activity,and enhanced soil fertility,thereby improving the disease resistance of watermelon and the quality of soil in greenhouse watermelon,and effectively alleviating the obstacle of watermelon in continuous cropping.Therefore,the practice of rolling and returning the garlic to the field holds significance for soil improvement in greenhouse watermelon cultivation.