Ingenious treatment of zucchini virus disease

Treatment of seeds: first soak the seeds in clean water for about 4 hours, then add 10% trisodium phosphate solution for about 30 minutes, and then wash and dry, which can effectively eliminate the primary infection source. Spraying chemicals: after planting, Aktai water dispersible granule is selected and sprayed with water around the field and on the surface, which can effectively kill the transmission medium. At the initial stage of the disease, 1.5% Zhiyanling EC 800 times should be sprayed, once a week, 3-4 times to kill bacteria.

First, treat the seeds before sowing

The main results are as follows: 1. In order to prevent the seeds from carrying poison before sowing, the seeds need to be disinfected and germinated, so as to effectively eliminate the primary infection source.

2. Method of operation: soak the seeds in clean water for about 4 hours, add an appropriate amount of 10% trisodium phosphate solution for about 30 minutes, then rinse the seeds with clean water and dry them, put them on the treated wet cloth, and sprout after some time.

2. Selection of varieties

In order to prevent and cure virus diseases, varieties with good disease resistance should be selected before planting, which is beneficial to improve plant disease resistance and reduce the incidence of disease.

At present, the varieties with good disease resistance on the market are: Jasper, Dongyu, Zaoyu, Xuehu No. 1, Golden Coral and so on. These varieties not only have good resistance, but also have high yield and good planting income, which is suitable for planting in a large area.

Third, strengthen the management in the later stage

1. Zucchini planting in order to prevent cross-infection of virus diseases and soil nutrient loss, it is not suitable to plant zucchini in the same plot year after year, but should be rotated with Gramineae crops.

2. Before sowing, the soil should be ploughed deeply, the depth of ploughing is about 10cm, and then sufficient basal fertilizer should be applied, which is beneficial to improve the disease resistance of the plant and cultivate strong seedlings. It is also necessary to clean up the sundries in the planting plot regularly, which is beneficial to reduce the incidence of virus and the living space of other insect pests.

3. The temperature of zucchini should be controlled after planting. If the temperature is high, spraying water can be used to reduce the field temperature. For example, when the field is relatively humid, the amount of nitrogen fertilizer applied should be appropriately reduced. In the fruiting period, the temperature should be controlled at about 25-30 ℃, which is helpful to the synthesis of organic compounds. When the temperature drops at night, the temperature should be stabilized at about 15-18 ℃.

4. If diseased plants are found, in order to prevent pathogens from infecting other healthy plants, they should be removed immediately and then buried or burned to prevent the disease from spreading.

IV. Spraying chemicals

The main results are as follows: 1. Spraying chemicals can improve the disease resistance of plants, effectively kill the source of virus disease, thus reduce the symptoms of the disease, and effectively control transmission vectors such as whitefly and aphids, so as to prevent the spread of diseases.

2. After general zucchini planting, Aktai water dispersible granule can be selected. After diluted with water, it is sprayed around the field and on the surface, so as to effectively kill white lice and aphids.

3. At the initial stage of the disease, 1.5% Zhiyanling EC 800 times or 20% virus A wettable powder 500 times solution should be sprayed for control, about once in 7 days, and continuous spraying for 3-4 weeks can kill bacteria and reduce disease symptoms.

4. In the early stage of plant disease, in order to improve the disease resistance of the plant, 6000 times of Aiduo liquid or 7500 times of phytoalexin can be sprayed.