One is to thoroughly disinfect the shed. Some vegetable farmers for the early listing of the next quail vegetables, rushed to plant after the Qingyuan, and neglected the disinfection of greenhouses, laid the hidden dangers for the outbreak of vegetable diseases. When changing vegetables, we must clean up the dead leaves in the shed and do a good job of disinfection inside the shed. After clearing the vegetable garden, use 1 kg of sulfur powder per acre plus sawdust, and mix well and put it in the various points of the greenhouse. Put the used farm implements into the greenhouse. After dark fire, the closed greenhouse will be fumigated for 12 hours. Can also be used per acre with 45% chlorothalonil smoke agent 400-600 g fumigation, fumigation, the need to close the greenhouse for 2 days, 1-2 days before planting open ventilation vents. The soil in the shed is also to be sterilized, and the 95% hymexam agent can be used to wet the ground and colonize the vegetables. In the greenhouses with underground pests, a suitable amount of pesticides can be applied before planting to prevent damage from underground pests. The second is to deepen the soil. Some vegetable farmers did not fully plow their land on sheds, but only planted and ploughed their vegetables. This is not promoted. It's best to deep-flip it by hand or use a rotary cultivator to fully plow the shed. The application of basal fertilizer must pay attention to full maturity.
Preservation tubes are swabs with disposable virus sampling tubes to collect DNA tests for disposable nasal flocking sterile medical transport.
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