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近几年,塑料大棚蔬菜生产发展转快,取得了良好的经济效益和社会效益。但由于棚内气温高,肥水用量大,湿度大,致使病害多,发病重,影响棚菜的高产、优质、高效。为防止病害发生蔓延,消灭菌源,常在定植前用硫磺粉薰蒸消毒空棚。个别农户由于经验不足,使用硫磺粉直接薰蒸生长着的蔬菜,给棚菜生产造成了严重的经济损失。1995
In recent years, plastic greenhouse vegetable production faster, and achieved good economic and social benefits. However, due to high temperature greenhouse, fertilizer and water consumption, humidity, resulting in disease and more serious incidence of greenhouse vegetables, high-quality, high efficiency. In order to prevent the occurrence of disease spread, eliminate bacteria, often in the pre-planting fumigation with sulfur powder sterilization shed. Due to lack of experience, individual farmers directly fumigated vegetables with sulfur powder, causing serious economic losses to the production of greenhouse vegetables. 1995