How to prevent and control the damage of hock coarse horn firefly to licorice
The leaf-eating insects of the family Chrysostomidae are one of the main obstacles to the development of licorice production. In ** Uygur Autonomous Region, Hexi area of Gansu Province and licorice producing areas of Liaoning Province, it is distributed in different degrees, mainly damaging sweet licorice, but not damaging other trees, shrubs and other herbs. In the whole growing season, adults are mainly harmful, and they eat a lot. Adults and larvae often overlap to cause damage. In serious plots, the whole licorice is eaten until only stems or veins are left. From a distance, it seems that it has reached the autumn withered and deciduous stage.
The results showed that trichlorfon, phoxim emulsion and dimethoate emulsion had good insecticidal effect.
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How to carry out weeding and ploughing of licorice
Licorice is suitable to grow on the open land where crops can not be planted, and as long as there is water in this kind of land, there are often a lot of weeds, and the success or failure of planting and the yield are all related to weeding. If there are many weeds, the utilization rate of water and fertilizer of licorice is low, and the yield decreases naturally. For licorice planted in the field, weeding should be carried out by the combination of artificial and chemical weeding. In other words, artificial weeding was mainly used in the planting year, and from the second year, weedy plots selected appropriate herbicides for chemical weeding from June to July, shoveling once before entering the rainy season and again after autumn.
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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. Human beings
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