Belonging to the field of biological control of pests, the invention discloses a
Bacillus thuringiensis strain that has a
broad spectrum and is highly effective on lepidoptera pests, preparation of its
wettable powder and application. The
Bacillus thuringiensis YX-1 strain involved in the invention is preserved in China General
Microbiological Culture Collection Center, and the preservation number is CGMCC No. 5256. Containing a plurality of insecticidal genes, the strain has a highly effective lethal effect on Cydia molesta,
cotton bollworm, fall webworms, Adoxophyes orana Fisher von Roslerstamm, Phalera flavescens Bremer et Grey, carpocapsa pomonella, prodenia litura,
plutella xylostella,
beet armyworm and other lepidoptera pests. The invention also discloses a method for preparation of
wettable powder through the YX-1 strain. The
Bacillus thuringiensis YX-1 strain and its
wettable powder provided in the invention are mainly used for prevention and treatment of lepidoptera pests on various fruit trees and vegetables, also can be used for prevention and treatment of lepidoptera pests on field crops and
garden plants, and have the characteristics of
broad spectrum, high efficiency, safety to people,
livestock as well as animals and plants, and no environmental
pollution, etc.