Application of H.beicherriana in preventing and treating lissorhoptrus oryzophilus kuschel

Abstract

The invention relates to a preventing and treating method of underground insects, particularly application of H.beicherriana in preventing and treating lissorhoptrus oryzophilus kuschel. H.beicherriana is prepared to a preparation by the inventors and is applied to a paddy field. The result shows that the effect of the H.beicherriana for preventing and treating lissorhoptrus oryzophilus kuschel is remarkable and the larva preventing and treating effect reaches over 80% (the correction effective rate is 81.82%).

Description

technical field [0001] The invention relates to the technical field of biological control, in particular to the use of a new Heterorhabditis beicherriana collected, separated and identified by the first applicant of the patent of the invention for field control of rice water weevil. Background technique [0002] Rice water weevil (Lissorhoptrusoryzophilus Kuschel) is native to the Mississippi River Basin in the United States and belongs to the Curculionidae family of Coleoptera. Its parthenogenetic type was first introduced into Asian country Japan in 1976, and first introduced into Tanghai County, Hebei Province, my country in 1988. Since then, it has gradually spread in Shaanxi, Jiangsu, Fujian, Jiangxi, Yunnan, Guangdong, Guangxi and other places, and the damage has increased. , the occurrence area exceeds 400,000 hm 2 . Rice water weevil mainly harms rice and uses corn, sugarcane, wheat, barley, pasture, grass weeds, etc. as hosts. It can be transmitted through straw, r...

AI Technical Summary

Problems solved by technology

In the field of bio-control, only scholars at home and abroad have reported the indoor control potential of Spodoptera sternneri to the larvae and adults of rice water weevil. So far, there has been no report on the use of this newly discovered nematode to control rice water weevil at home and abroad. There is no report on field control effect

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