The arrangement of cornices in greenhouses must be adapted to the market, adapted to local conditions, and adapted to the conditions of the shed. The following techniques should generally be mastered in the gargle arrangement: First, according to the market price, the peak period of vegetable harvest is arranged at the highest price of vegetables. Second, the maturity of vegetables in the most suitable season for the growth of vegetables, only the combination of high yield and high prices in order to achieve better efficiency, reduce management difficulties and production losses. For example, some vegetable farmers only see the high price of vegetables during the Spring Festival. They do not consider the insulation performance of their greenhouses and blindly carry out the winter production of a large amount of vegetables. Before and after the Spring Festival, it is the season with the weakest sunshine, the shortest sunshine hours, and the lowest temperature. The low-grade greenhouse insulation performance is poor, it is difficult to meet the needs of vegetable growth, is not conducive to the growth and development of vegetables, the output is extremely low, often can not reach Expected benefits. As a matter of fact, greenhouses with poor insulation performance, if they are produced for two years a year, that is, winter and spring and autumn and winter, make full use of the light and heat resources from March to June and September to November to obtain high yield and high efficiency. Third, we must increase the utilization of greenhouses. There is a "vacant summer" problem in winter greenhouses. There is a problem of "wintertime" in arch shelters. It is possible to cultivate straw mushrooms, plant beans, etc. during the summer break in winter greenhouses, and plant canola, spinach, etc. during the winter period in arch shelters. Improve planting efficiency. Fourth, consider changing crops with other vegetables to reduce pests and diseases and prevent secondary salinization of soil. These test kits are new to the market and rely on the detection of viral proteins in swab samples They consist of monoclonal antibodies specific for the viral antigens and results are seen by the naked eye by way of chromatographic particles. There have only been a few of these tests commercialized and normally require a high viral count to work effectively. In the first few months of the pandemic some national health authorities questioned the reliability of these tests, as they usually require a higher viral count that qPCR to show positive. Therefore, false-negatives can occur. antigen test kit, rapid antigen test kit, covid-19 antigen test, antigen detection, antigen kit Shenzhen Uni-medica Technology Co.,Ltd , https://www.uni-medica.com