Watermelon seeds are one of the most important ways to spread watermelon diseases. Many diseases can be transmitted through the seed carrier. Therefore, in order to control and prevent diseases through seed infection, the seeds need to be disinfected before sowing. The main methods are as follows:
1. Pharmaceutical treatment Use 50% wettable carbendazim powder to prepare 500 times liquid, soak the watermelon seeds for 1 hour and rinse with water to prevent fungal diseases such as anthrax; use 10% trisodium phosphate solution to soak watermelon Seeds for 20 minutes, washed with water, can be inactivated viral activity, have a certain effect on the control of watermelon mosaic virus.
2, high-temperature hot seed in the two containers, respectively, into the same amount of cold water and boiling water, the amount of water to prepare for the treatment of the seed about 3 times, first poured into the boiling water, quickly stir 3 to 5 seconds, and then immediately down Into another container of cold water and constantly stirring to make the water temperature down to about 30 degrees, and then soaked at room temperature for 3 to 4 hours, can kill pathogenic bacteria on the surface. The speed of hot-spotting is faster and the time cannot be too long, so as not to affect the seed germination rate.
3, warm hot soaking seeds of watermelon into 55 degrees warm water, stirring for 15 minutes, natural cooling after cooling, soaking for 4 to 6 hours. 55 degrees is the lethal temperature of the germs. After the seeds are scalded, they can basically kill the germs on the surface of the seeds and passivate the watermelon mosaic virus.
4, strong light drying choice sunny windless weather, will be planted in the booth or on paper and other objects, the thickness of not more than 1 cm, so that in the sun exposure, flip every 2 hours or so to make it light Uniform. Don't put it on the cement board, iron board or stone when drying, so as not to burn the seeds and affect the germination rate. In addition to a certain bactericidal effect, drying seeds can also promote seed ripening, enhance the vitality of seeds, and increase the seed germination potential and germination rate.
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