一.北京发展有机(食品)栽培意义重大近期沸沸扬扬的“苏丹红”事件,又一次着实向人们敲起“食品安全”的警钟。北京是国际化大都市,因此,通过使用有机肥料和适当的耕作措施,达到提高土壤的长效肥力,提高果品品质、增加优质精品,同时对于生态建设、环境保护和可持续发展都具有重要的意义。果树的有机栽培,是从改良土壤和建立良性生态系统入手,不施用任何人工合成的化学肥料和农药,通过施用充分腐熟的有机肥、营养液、果园生草、生物防治、采用高光效树形等栽培措施,避免由淋溶和径流导致的水系污染,充分利用光能,营造一个可维护生物多样性的平衡生态系统,提高土壤活性,使土壤 I. Development of organic (food) cultivation in Beijing A “Sudan red” incident of great recent upsurge has once again aroused the alarm of “food safety” to people. Beijing is an international metropolis. Therefore, by using organic fertilizers and proper tillage measures, it is important to improve the long-term fertility of the soil, improve the quality of fruits and increase the quality of products, and at the same time it is important for ecological construction, environmental protection and sustainable development significance. Organic cultivation of fruit trees is from the improvement of soil and establish a benign ecosystem, without any synthetic chemical fertilizers and pesticides, through the application of fully matured organic fertilizer, nutrient solution, orchard grass, biological control, the use of high-efficiency tree And other cultivation measures to avoid water pollution caused by leaching and runoff, make full use of light energy, to create a balanced ecosystem that can maintain biological diversity, improve soil activity, so that soil