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(1)园土消毒大棚蔬菜由于连作次数多。一般病害较为严重。用化学药剂进行园土消毒,可以杀灭靠土壤传播病害的病菌,降低发病率.可在每平方米冻土中注入8—10克多菌灵或福美双、拌种双、五氯硝基苯可湿性粉剂.(2)双层保温采用双层保温措施,即在大棚内加盖地膜或设置小拱棚。可有效地提高棚内温度。(3)棚膜采用聚氯乙烯无滴薄膜聚氯乙烯薄膜作棚膜,棚内水蒸汽不在膜上凝聚成水滴,增加了透光
(1) garden soil sterilization because of the number of continuous vegetables. The average disease is more serious. With chemical agents for soil disinfection, you can kill by the soil-borne diseases and reduce the incidence of bacteria per square meter of permafrost can be injected 8-10 grams of carbendazim or thiram, seed dressing double, pentachloride Benzene wettable powder. (2) Double-layer insulation using double insulation measures, that is, affixed to the plastic film in the shed or set a small shed. Can effectively raise the greenhouse temperature. (3) shed films using PVC drip film PVC film as a greenhouse film, the shed water vapor does not condense into a film on the membrane, increasing the light