As a result of the damage caused by root rot (including black spot disease) and underground pests (mainly earthworms), new nursery seedlings often cause seedlings to shoot out or a large number of deaths after emergence, which seriously affects the yield and quality of seedlings. Here are some pest control measures: 1. For underground pests, use 50% methyl ethyl liuliu phosphate granules 1.5 to 2 kg/mu mixed fine soil before turning the tillage before nursery. Sprinkle the fields, the other half sprinkle the hoe before the hoe, and water the seedlings after the nursery to fully dissolve the active ingredients of the pesticide into the soil so as to effectively kill various insects in the ground. 2. For the prevention of soil diseases, the roots can be immersed in roots for 1 to 2 hours with 50% carbendazim and 15% thiophanate-methyl in a 1:1 ratio and 200 to 250 times the mixture before plugging. Slightly dry before plugging in. It can effectively prevent root rot and black spot. 3, after the cuttings germinate, with 50% methamidophos or 1605 pesticides 1200 to 1500 times liquid-based spray, can effectively prevent the shoots from being bitten.
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