89 results about "Phytosciara" patented technology

The invention relates to an experimental method for measuring indoor control effect on soybean phytophthora root rot caused by chemical agents. Soybean phytophthora root rot is of foreign quarantine pests of China and belongs to typical soil-borne disease. Literature reports that the soybean phytophthora root rot develops by 3 times each year and threatens soybean production of China. At present, an irrigation bacterial liquid bacterial inoculation method, a hypocotyledonary axis wound inoculation method, a hypocotyledonary axis zoospore inoculation method and a bacterial layer inoculation method are generally adopted for measuring potted living bodies with the soybean phytophthora root rot by the chemical agent in a lab, but the four experimental methods have certain defects, for example, the concentration of obtained zoospore suspensions cannot be kept consistent; the inoculation speed is low, the workload is high, and the death of a large quantity of diseased plants is easily caused; zoospores generated by different phytophthora sojae plants are different in number and size; the germination rate of soybean seeds is low and the rot, dead seedlings and the like of the soybean seeds are easily caused. The experimental method adopted by the invention is simple to operate, soybeans can be uniformly infected with phytophthora sojae, the control morbidity is uniform and stable and is kept at 85%-95%, the difference between a chemical agent applying region and a control region can be well distinguished, and the symptoms of disease can be simply and quickly observed.