Nursery soil commonly used disinfection method

Disinfecting nursery soil before sowing or cutting can eliminate germs and ensure seedling safety. There are the following six commonly used and better methods:
Pentachloronitrobenzene was sterilized with 4 grams of 75% pentachloronitrobenzene per square meter of nursery and 5 grams of zein zinc. After mixing, 12 kilograms of fine soil were mixed well. When planting, it is covered with a cover to prevent anthrax, blight, damping-off, sclerotinia and other special effects.
Formalin disinfection Every square meter of nursery use formalin 50 ml plus 10 kg of water evenly sprayed on the surface, then covered with straw bags or plastic film, stuffy about 10 days to remove the cover, so that the gas volatilized, two days later Sowing or cutting. Prevent blight, brown spot, keratoderma, anthrax, and have good results.
Bordeaux sanitizes each square meter of nursery with the same amount (copper sulfate: lime: water ratio of 1:1:100) Bordeaux mixture 2.5 kilograms, plus scattered 10 grams of soil sprayed soil, until the soil is slightly dry to sow cuttings . It 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, and has a good prevention and treatment effect against Ascomycetes and Deuteromycete. Soil disinfection with 50% wettable powder, mixing 1.5 grams per square meter, can prevent root rot, stalk rot, leaf blight, gray leaf spot disease. Can also be formulated as 1:20 ratio of toxic soil sprinkled on seedbeds, can effectively prevent seedling disease.
Disinfection of ferrous sulfate with 3% solution to treat soil, with 0.5 kg of liquid per square meter, can prevent seedling blight of flowers and trees, peach, plum leaves, and cure flowers caused by iron deficiency disease.
Daison ammonium disinfecting gensenammonium is strong in bactericidal, can penetrate into the plant body, and has certain fertilizer effect after being decomposed in the plant body. Using 50% water-soluble dimethoate 350 times, 3 kg of water per square meter of nursery soil can prevent and cure flowers, black spot, downy mildew, powdery mildew, blight and bulbous bulbs of a variety of diseases.

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