Cauliflower seedlings appear dark stems in two cases, one is the base of the stem there are many round, oval spots, there are black spots above, serious will surround the base of the stem a circle, which is black spot disease. The other is the black base of the stem, white mold above the wet, is a black root disease.
Seed disinfection: You can use a new high-fat membrane thermostat soaking, soaking and then remove and dry. Can keep warm, moisturize, absorb, increase seed germination rate, make seedlings robust. Repel underground pests and isolate virus infections. Can also be mixed with seed coating agents.
Improve seedling technology: the best use of plug seedlings. The nursery soils should be selected from the soil of the wheat or corn in the substrate or the field, and can not be used to plant vegetables, especially the greenhouse Honda soil.
Strengthen seedbed management: Can not be watered during the seedling period, and can only be sprayed with a watering can on a sunny day. After the seedlings are unearthed, they must be planted in time and be ventilated and ventilated.
In the early stage of onset of drug control, roots can be used with general tree maintenance to irrigate roots, induce virus build-up, provide general guidance for general disinfection of tree maintenance, inhibit cauliflower root viral transmission infection and leaves and fruit, and maintain plant transport system health work. .
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