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Greenhouse Medicine - Six Principles to Know
Timely medication According to the law of occurrence of pests and diseases, identify the weak links, and timely medication. If the vegetables are sown or planted, the soil should be sterilized or seed dressing. We must focus on early prevention and control the spread of disasters. The right medicine is prescribed according to the prevention and treatment of the object, such as anti-spasmodic or can only kill aphids and can not kill cabbage caterpillar. Trigonelin only kills rust and powdery mildew and does not eliminate downy mildew. Alternately using different types of pesticides for reasonable rotation or mixed use, not only can prevent the pest resistance, but also treat diseases and insect pests, save time and save drugs with high control effect, such as the enemy to kill a mixed net. Look at the day-use medicine greenhouses should not be used on cloudy snow days, should be sprayed with liquid on dry days in the morning, and should be properly ventilated to reduce air humidity. Change the way to use medicine The greenhouse drug use smoke and dust as much as possible to reduce the humidity inside the greenhouse. The smog method is generally lighted with 10% or 40% chlorothalonil smoke tablets. Dust method with 10% chlorothalonil composite powder in the morning when the dew is not dry or early evening when the dew condensation effect. Safe use of drugs should strictly implement the standard and amount of safe use of pesticides, and should not use highly toxic pesticides with high residues, such as 3911, methylammonium phosphate, etc., should choose to kill, Kang Wei, Tian Weishi and other high efficiency and low toxicity, low residue pesticides or Biological pesticides, such as agricultural anti-120, streptomycin, etc., to prevent human exposure to poisoning.