5results about How to "Inhibition amount" patented technology

The invention discloses a sex attractant for yellow rice borers as well as a preparation method and application of the sex attractant, and relates to the technical field of agricultural pest monitoring, prevention and control. The sex attractant comprises an active component which is prepared from (Z)-dodecyl-9-ene-1-yl acetate, (E)-dodecyl-9, 11-diene-1-yl acetate and (7E, 9Z)-dodecyl-7, 9-diene-1-yl acetate, and the sex attractant is prepared from an active component which is prepared from the following components of (Z)-dodecyl-9-ene-1-yl acetate, (E)-dodecyl-9, 11-diene-1-yl acetate and (7E, 9Z)- According to the sex attractant disclosed by the invention, aiming at the current sugarcane area dominant population, the three active components have a synergistic effect, so that the trapping activity of the current sugarcane area dominant population is remarkably improved, and the problems that the trapping activity is low and the specificity is poor due to the fact that a control object is not matched with the dominant population in the existing sex attractant product are solved. Field trials show that the trapping quantity of the sex attractant provided by the invention on the yellow rice borers is obviously higher than that of a control group, the sex attractant has extremely high population specificity, and accurate monitoring and efficient trapping and killing of yellow rice borer populations can be realized.

The present application provides a kind of plant pathogenic soil biological control agent and its preparation method and application technology, which is composed of multiple different genera of biocontrol strains and their metabolite concentrated solid 70-90% and auxiliary materials 10-30% with complementary mechanism and target.The fermentation concentrated liquid of multiple strains is mixed with carrier, and then spray dried to obtain the compound bacteria fermentation liquid concentrated solid;Then it is mixed with auxiliary materials to granulate to obtain the present application.The present application is used for the prevention and control of plant diseases caused by one or several of fusarium, pythium, pathogenic streptomyces, rhizoctonia solani, raoultella, erwinia carotovora and other plant pathogenic bacteria and nematodes that can survive in soil and its pathogenic soil.The present application effectively improves the microecological environment of pathogenic soil, induces plant disease resistance effect, constructs a good plant soil ecosystem and promotes plant growth and development.

The invention relates to the technical field of green prevention and control of agricultural pests, in particular to a green prevention and control method for rice pests based on combination of multiple spiders and application of the green prevention and control method for rice pests based on combination of multiple spiders. Placing density and position of the spiders: after the rice is transplanted, uniformly putting the combination of the various spiders into the rice field according to the putting density; and ecological environment optimization: arranging shelters for inhabiting and avoiding of the spiders in the rice field to promote survival and reproduction of the spiders. According to the method, multiple spiders with ecological niche complementarity are screened, a natural enemy community which can be stably colonized in a rice field and has a synergistic effect is constructed, continuous and efficient control over main pests of rice is achieved, and finally the purposes of completely replacing chemical pesticides, protecting the ecological environment and producing green rice are achieved.

The invention provides application of histone acetyltransferase GhGCN5 in regulation and control of cotton fiber development, and relates to the technical field of molecular breeding. After the GhGCN5 gene is edited in cotton, both the initial number of fibers and the length of mature fibers are increased; the overexpression GhGCN5 gene can significantly inhibit the growth of cotton fibers in the initial and elongation stages, and leads to the reduction of the length and quantity of mature fibers. The GhGCN5 gene capable of regulating and controlling the development of the cotton fibers, provided by the invention, provides new gene resources and theoretical support for the quality improvement of the cotton fibers.

Provided is an apparatus that derives a luma intra prediction mode and a chroma intra prediction mode, determines a size of a luma transform unit and a size of a chroma transform unit using luma transform size information, adaptively filters the reference pixels of a current luma block based on the luma intra prediction mode and the size of the luma transform unit, generates prediction blocks of the current luma block and the current current block and generates a residual luma residual block and a chroma residual block. Therefore, the distance of intra prediction becomes short, and the amount of coding bits required to encode intro prediction modes and residual blocks of luma and chroma components is reduced and the coding complexity is reduces by adaptively encoding the intra prediction modes and adaptively filtering the reference pixels.