Disinfection common sense in plastic greenhouse
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1. Space disinfection is carried out 7 to 10 days before sowing or planting. Each cubic meter is mixed with 4 grams of sulfur and 8 grams of sawdust, and is placed in a container for burning. The time should be carried out at 7 o'clock in the evening, and the smoke is sealed for 24 hours. It can also be used with 25% chlorothalonil per cubic meter, 8 grams of sawn wood, and ignited with smoke.
2. Scaffolding, equipment, tools, etc. can be washed or sprayed with an aqueous solution of formalin from 1:50 to 1:100.
3. Soil disinfection The pesticides are selected according to the types of pests and diseases in the greenhouse soil, and are carried out 10 to 15 days before planting. In the greenhouse where the wilt disease is serious, 100 to 200 times of formalin solution can be sprayed on the kneading surface or the ditch surface, and then covered with a film for 5 days. After half a month, the medicines are completely evaporated, and the seeds can be planted and planted. Other diseases can be sprayed with 50% carbendazim, 50% tobuzine or 70% dikesone 1000 times solution, or made into toxic soil and then turned into the soil. A greenhouse with underground pests can add a certain amount of pesticide to the soil.
4. Planting ditch disinfection and wilting of the plot, soil disinfection or disinfection quality before planting, can also be used in the planting ditch, 50% thiophanate 1.25 kg per mu or 50% carbendazim 0.75 kg or 70% of quintonitrobenzene is disinfected at about 1 kg. The above medicines should be mixed firstly according to 1 part of the powder and 100 parts of the fine dry soil, and then spread in the planting ditch.
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili