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大棚作物种植是山东省传统的特色优势产业,近年来年种植面积达87万公顷,约占全国的20%以上。随着大棚种植的连作,棚内土壤有害菌群繁殖积累,作物病害加重问题日益凸显。为了防治作物病害,农民群众大量使用溴甲烷、氯化苦、斯美地水剂、必速灭颗粒等杀菌消毒剂。一方面造成了病原菌产生抗药性,用药量不断增加,防治成本连年上升。据统计,目前连作6年以上的大棚户,667平方米每年用消毒剂达1500
Planting greenhouses is a traditional characteristic and advantageous industry in Shandong Province. In recent years, the planted area has reached 870,000 hectares, accounting for more than 20% of the national total. With the continual planting of greenhouses, the harmful bacteria in the shed multiply and multiply, and the crop disease aggravates day by day. In order to prevent crop diseases, mass use of methyl bromide, chloropicrin, the United States and the United States water agent, will speed off particles and other disinfectants. On the one hand, it caused the emergence of drug-resistant pathogenic bacteria, increasing doses, prevention and control costs increased year after year. According to statistics, at present, even for more than 6 years of greenhouse house, 667 square meters a year with disinfectants up to 1500