37results about How to "Outbreak control" patented technology

The invention discloses a method to prevent tomato virus diseases. In the initial stage when a tomato suffers from virus diseases, an agentia with a length of 4 cm-5 cm is vertically coated on the stem of the tomato 2 cm-3 cm lower than a growing point of the tomato suffering from the virus diseases. The agentia is formed by 2% ningnanmycin wettable powder 33g, 80% ascorbic acid 10g, 98% burdock oligosaccharide 10g, 0.01% oxyenadenine water aqua 12.5 ml, organosilicone azone polymerization penetrant 0.6 ml and water 5 kg in a mixing mode. According to the method, traditional pesticide application concepts and operation techniques are changed, the defect that in an existing solar greenhouse and other protected areas, indoor humidity is increased through conventional spray is overcome, and the method has the advantages of being little in pesticide use amount, low in prevention cost, simple in structure and good in prevention effect. Compared with a traditional method that pesticides are applied on surfaces of leaves, the method enables yields to be increased by 18.5%-26.4%.

A method for controlling algae in a freshwater pond by cultivating striped mullets relates to a method for treating water. Aiming at the problem of frequent blooming of blue green algae in a eutrophic pond aquiculture water body, the striped mullets which belong to river mouth marine fishes and can only be reproduced in sea water are introduced to filter-feed on the algae and swallow detritus substances, so that the aim of continuously and thoroughly purifying a freshwater pond aquiculture environment is fulfilled. The method is characterized by comprising the following steps of: performing gradual desalting treatment on the striped mullets before cultivation to make the striped mullets adapt to the living environment of freshwater, wherein the age of each striped mullet is less than 24 months; transferring the striped mullets into a pond required to be purified by a keeping-alive transportation method; cultivating the striped mullets in the eutrophic freshwater pond; and catching thelarge striped mullets and keeping the small striped mullets year by year according to the density of the striped mullets in a water environment. By the method for controlling the algae in the freshwater pond by cultivating the striped mullets, the content of the algae in the eutrophic freshwater pond aquiculture water body is effectively reduced, nitrogen and phosphorus nutritive salts in the water and humus in a bottom material are brought out of the water body by harvesting reproduced striped mullets, the quality of the water body is greatly improved, and algae blooming is controlled.

The present invention proposes a California perch culture system and method. The system includes a pond, a sewage collection well and a water circulation device. The bottom of the pond is connected with a sewage pipe leading to the sewage collection well. There is a drainage pipe on one side and the bottom of the main well, an isolation filter layer on the top of the main well, and a manure outlet on the bottom. The manure outlet is connected to a manure pipe leading to the auxiliary well, and the end outlet of the manure pipe is higher than the main The excrement outlet at the bottom of the well; the outlet end of the sewage pipe is respectively connected with an upward-opening exhaust pipe and an auxiliary water outlet pipe. The water outlet pipe and the auxiliary water outlet pipe are connected to the auxiliary well, and the opening of the auxiliary water outlet pipe is inserted with a long pipe; the water circulation device includes a pond water pipe, a sewage collection well water pump, a sewage collection well water pipe, a circulating water pump, a microbial treatment tank and a return pipe, and the pond water The water from Heji sewage well is pumped to the microbial treatment tank for treatment and then returned to the pond, which solves the problem of the discharge of aquaculture sewage.