Blight, damping-off, and gray mold are important diseases in the vegetable seedling stage in Hunan Province. The spring nursery greenhouse and various seed beds in the field can occur. These three kinds of diseases are all caused by Fungal Infection. They mainly damage solanaceous fruits, melons, beans, and cruciferous vegetables. When they are serious, they can cause damage to the seedlings. At the beginning of the disease, choose one of the following agents to prevent and cure in time: 75% chlorothalonil wettable powder 600 times; 64% antivirus 500 times; 40% phytophorexine 200 times; 50% Hyeon 500 times spray. Early blight is mainly responsible for the stems, leaves and fruits of the eggplant vegetables, and the typical symptom is the water-stained circular depression concentric ring lentigma at the branching of leaves and stems and leaves, and 25% metalaxyl 800 times, or 77% is used. 500 times the liquid can be killed, or 53% gold mine more than 100 grams of water dispersed granules 50 kg of water spray. The typical symptom of anthrax is a near-circular lesion with a central depression on a fruit such as pepper, and a black spot on the lesion. 70% thiophanate-methyl or 80% Anthraquinone or 80% Xinwansheng WP 800 times was selected in the field when the diseased plant was found. The locusts spread virus disease, and we must do a good job in the early management of lice. With the cultivation of greenhouses and other facilities, the population of whiteflies rises to cluster harm, secreting honeydew and inducing coal pollution. In the initial stage, one of the following agents can be controlled: 10% imidacloprid wettable powder, 25% Aktai water dispersible granule 2000x, 2.5% Uranus EC, 2.5% kungfu EC, 2.5% Sweep, 40% Chrysanthemum emulsifiable concentrate, 50% haze fog, etc., each spray 3000 times. The tea tree borer is harmful to many kinds of vegetables, and the pepper is the most affected. The adult and young cubs concentrate on the young part of the host to draw juice. At the beginning of the damage, 1.8% of insects can be used, or 72% of Krypton, or 5% of Nisolulon, or 20% of Emulsion can be used for 2000-3000 times of fluid, and sprayed once every 10 days for continuous spraying. Apply 3 times. Small ground tigers mainly bite off tender stems during the seedling period of vegetables, resulting in lack of seedlings. Generally, they need to be controlled by drugs before the third instar larvae, sprayed or rooted with 90% trichlorfon crystals or 48% Loessben EC 1000 times. In addition, snails also bitten off seedlings, resulting in lack of seedlings and ridges, and scraping leaves and stalks of vegetables to cause holes or nicks. It is possible to use 6% tetra-polyacetaldehyde granules for 60 g/mu of dry fine soil or copper sulphate. 1000 times liquid, ammonia 100 times spray.
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