The main diseases of watermelon in seedling stage include blight, damping-off, and leaf diseases (such as diseases such as blight, anthracnose, and bacterial leaf spot). Prevent blight, spray with Rui Miaoqing, prevent flooding, use Precike spray, and also mix seedlings in the soil in advance; prevent damage to leaves, and use Amizymes (Azoxystrobin, Phenyl ether) Meconazole) + Streptomycin for agriculture or Amisida (acetostrobin) + Secox (difenoconazole) + copper cupric chloride.
There are few general drugs at the seedling stage, and it is necessary to ensure good drug habits. In the event of a phytotoxicity, they should use a mixture of amino acids or humic acids or alginic acids in order to ease the injury.
In addition, most of the current nursery uses small nursery sheds. On dehumidification, rice husks can be placed between rows of sheds, and corn stalks can be placed on the back wall. This not only enhances the insulation of the shed, but also controls the shed. Humidity. When the humidity in the greenhouse is too high at night or when the weather is not good, the straw can absorb excessive moisture in the air, reduce air humidity and condensation on the greenhouse film, thereby reducing the possibility of disease infestation and transmission. In the clear day, the straw will evaporate the evaporated water and dry out, and it will work again.