Spring is a good time for nursery. Before the farmers sowing seedlings or cutting seedlings, farmers should disinfect the nursery soil in time to kill germs and improve the survival rate of seedlings.
Pentachloronitrobenzene was disinfected per square meter of nursery land, with 45% of 75% pentachloronitrobenzene and 5 grams of mancoze zinc. After mixing, it was mixed with 12 kilograms of fine soil. Anthracnose, blight, damping-off, and sclerotia have special effects.
Formalin disinfection per square meter nursery, with formalin 50 ml plus 10 kg of water evenly sprayed on the surface, and then covered with straw bags or plastic film, boring about 10 days to remove the cover, so that gas volatilization, two days later You can sow or cut. This method has a good effect on control of damping-off, brown spot, angular spot, and anthrax.
Bordeaux sanitizes each square meter of nursery with the same amount (copper sulfate:lime:water 1:1:100) Bordeaux mixture 2.5 kg, plus 10 grams of sparse spray soil, so that the soil can be sown or cut after a little dry This method has obvious effects on the control of black spot, spot, gray mold, rust, brown spot, and anthrax.
Carbendazim sterilized carbendazim can prevent and treat a variety of fungal diseases. Soil disinfection with 50% carbendazim WP, mixing 1.5 grams per square meter, can prevent root rot, stalk rot, leaf blight, gray spot disease and so on.
Disinfection of ferrous sulfate with 3% ferrous sulfate solution in the soil, with 0.5 kg of liquid per square meter, can control the seedling blight of coniferous flowers and trees, peach and plum leaf shrinkage, and concurrent treatment of flowering wood caused by iron deficiency yellowing disease.
Daison ammonium is highly fungicidal and can infiltrate into the plant body. After decomposing in the plant body, it has a certain fertilizer effect. With 50% water-soluble DESMON 350 times solution, 3 kg of diluted water per square meter of nursery soil can prevent black spot, downy mildew, powdery mildew, blight and bulbous bulbs of flowers. Disease.
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