Watermelon in the spring to eliminate the poison
Recently, Yangchuan, a large watermelon planter in Yongfu Village, Xinglong Township, Nanchuan District, was mulched in cultivated land to prepare gifts for melons.
According to reports, gift melons are popular melon seeds. Not only the appearance of "mini", the skin is very thin, and it is more popular than the ordinary watermelon with fine meat, good taste and high sugar content.
Eight years of growing watermelon, Yang Chuan is also a famous watermelon planter in the local area. Through continuous experiments, he finally overcomes the problem that watermelon can't be continued. This year, he will plant 50 mu of gift melon on the melon land he had planted last year.
“Replanting the watermelon in the land where the watermelon was planted is not a disease or death. Therefore, it is necessary to change the place for planting each year. The large area of ​​land with convenient transportation and good farming conditions is hard to find and overcome the difficulties of watermelon continuous cropping. More important," Yang Chuan said.
He said that after continuous cropping, the growth of watermelon plants was weak, and the roots were prone to root-knot nematodes, wilt disease, and epidemic diseases, resulting in a significant reduction in production, and even in severe cases, even in the absence of crops. The problem of incidence and reduction in yield of continuous cropping watermelon plants is due to the fact that continuous cropping of the same species of crops absorbs the same nutrients, resulting in a loss of land nutrient and plant disease resistance.
To solve these problems, he suggested the following method.
Soil disinfection There is a large number of pathogenic fungi in the soil that has not been disinfected, which may cause disease occurrence and epidemic. Soil disinfection should be performed before the watermelon is planted. Sterilizers such as carbendazim and chlorothalonil can be used as disinfectants.
Selection of seedlings planted with grafted seedlings can reduce the occurrence of blight and damping-off in watermelons, and use good and healthy varieties as grafting seedlings. At present, it is mainly used as rootstocks such as gourd gourd and melon.
Good management of fertilizers should be based on the selection of plant-based nutrient-containing fertilizers, preferably iron, zinc, manganese trace elements. The application of special fertilizer in the extension period of watermelon can enhance plant resistance after spraying. In addition, it is necessary to control the temperature of the environment and reduce the chance of infection by pathogens.
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