The scientific name Rhizoglyphus robini Claparede belongs to the order Acrididae. Distribution in the Northeast, North China, East China and South China is a worldwide pest.
The host Lily, Anemarrhena, Pinellia, tulips, narcissus, Gladiolus, iris, hyacinth, Fritillaria and other Chinese herbal medicines, Lily bulb damage.
Injury characteristics: Cheng and Ruocheng take sap around the root plate of the bulbs of the mother-of-pearls. Necrosis of the cells in the affected area occurs brown spots. The insects can also cause the bulbs to rot when carrying the bacteria. Once the bulbs start to rot, they are concentrated in the rot. Food infestation accelerates rot and causes severe reductions in production.
Morphological characteristics into a worm about 0.7-0.9mm, pear-shaped, oval to oval. Body white, smooth and wrinkle-free. Both the body's body and its feet are red, and the ends of the thighs have pliers-like bifurcations. It is 5 feet long, short and thick. The upper part of the tip is raised with fingers and the claws are bent. Egg length 0.15 to 0.19mm, oval, milky white. The larvae are 0.3mm long. If 螨 is similar to 螨, smaller, 颚 body and foot color are lighter, and the body is white;
Life habits are more than 10 generations old. 20 to 30 °C, complete a generation, take about 10-17 days. The pupa was overwintered in the bulbs of the rotted bulbs in the soil, and began feeding in late spring, and was endangered from June to November. Like the wet soil environment. Rainy summer and autumn. In summer, bulbs in the field are damaged by heavy bulbs or planted bulbs.
Control methods (1) Select bulbless bulbs, planted fritillaria, summer plowing 2-3 times in a row, timely drainage after the rain, keep the soil dry. (2) Apply compost of decomposed organic fertilizer or fermented bacteria to prevent the root carp from surviving and breeding in the unrefined fertilizer. (3) Apply 5% quinquinone granules 1.5-2kg per 667m2, add 10kg of wet fine soil and spread it into the earth after spreading it on the surface.
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