Phyllotreta striolata insect pest situation investigation method and special separation device

Abstract

The invention provides a phyllotreta striolata insect pest situation investigation method. The method includes the following steps that (1) a defined amount of mixed liquor of 10%-20% of a sodium chloride solution and clear water is put in a water basin; (2) a soil sample is put into the mixed liquor and softly stirred, eggs, deadwood and broken leaves float together to form floats, and soil particles settle; (3) the floats on the surface of the mixed liquor are sequentially screened through multiple layers of sieves, each layer of the sieve is washed with flowing tap water and softly stirred with a brush pen in screening, so the eggs, larvae and pupas of phyllotrta striolata are separated from the soil particles and large impurities, and the soil particles are left in the water basin; (4) the larvae, the pupas and the eggs of the second instar and the third instar and the larvae of the first instar of the phyllotrta striolata are respectively picked out with the brush pen and put into culture dishes. The method and the device have the advantages of being easy to operate, feasible, high in accuracy, and capable of providing precise guide for effectively preventing and controlling the phyllotrta striolata, and slowing drug resistance to a certain degree.

Description

technical field [0001] The invention relates to a method and a special separation device for investigating the situation of the flea beetle. Background technique [0002] Flea beetle [Phyllotreta striolata (Fabricius)] belongs to Coleoptera Chrysanthemum, commonly known as dog lice, fleas, flea beetle for short, is a worldwide pest that seriously damages cruciferous vegetables. Mainly damage cruciferous cabbage, cabbage, cauliflower and Solanaceae, melons, beans and other vegetables. Both adults and larvae of the flea beetle can cause damage. From the cotyledon stage to the end of harvest, the adults mainly eat the mesophyll. After the cotyledons of the newly unearthed seedlings are eaten up, the whole plant dies, resulting in lack of seedlings and broken ridges. In the adult plant stage, there are many oval small holes on the leaves that the adults have bitten. In severe cases, all the mesophyll is eaten up, leaving only the veins, and the seedlings cannot continue to grow...

AI Technical Summary

Problems solved by technology

This method is inaccurate in predicting the population of flea beetle, and the dosage of chemical control is inaccurate

And this method can not monitor the quantity of flea beetle eggs, if repeated sampling observation, then cause the waste of manpower, material resources and financial resources

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