How to control the damage of underground pests to licorice
The main underground pests in the emergence stage of Glycyrrhiza uralensis are mole cricket, he's oriental chelate beetle, and the adult stage is mainly damaged by golden needle worm, beetle, ground tiger, pseudo-step beetle and so on.
After the wild licorice is damaged by underground pests, because the wild root head is deep from the surface, the underground stem is mainly eaten. After damage, the adventitious buds can grow rapidly and regenerate without the death of the whole plant. On the other hand, the root is mainly damaged by the artificial cultivated licorice, and the young recovery ability of the plant is weak, accompanied by decay and infection, which often leads to the decay and death of the whole plant. When licorice is cultivated in a large area, it is difficult to protect seedlings in 1-3 years, and the main cause of seedling shortage and death is the damage of underground pests.
The prevention and control of underground pests should be given priority to. Before sowing, select the areas where the occurrence of underground pests is light, which is not conducive to the occurrence of pests, fine soil preparation, deep ploughing and heavy harrowing, destroy their habitats and kill insect bodies. Application of rotten stable manure to prevent grubs and mole crickets from being brought into licorice fields. When sprouting and dressing seeds, you can use 25% phoxim EC 0.1% to treat seeds. In the case of high population density of underground pests, 5 kg of 2% phoxim powder can be sprayed on the front mu of cultivated land for pre-sowing soil treatment. Pick 3-year-old licorice in time.
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How to prevent and control the damage of hock coarse horn firefly to licorice
The leaf-eating pest of Chrysomelidae is one of the main obstacles to the development of licorice production. There are different degrees of licorice producing areas in the Uygur Autonomous region, Hexi region of Gansu Province and Liaoning Province, mainly harming sweet licorice rather than other trees, shrubs and other herbs. In the whole growing season, adults are the main damage, and the food intake is large, adults and larvae often overlap as damage, serious land occurs, the whole piece of licorice is eaten only stems or leaf veins, from afar it seems to be in the autumn withered and yellow defoliation period. Try
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