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近几年北票市滴灌节水面积不断扩大,缓控释化肥的使用量也逐渐增加。缓控释化肥俗称一炮轰长效肥,它主要有五大特点,一是肥效期长,有效期可达110~120天;二是养分利用率高;三是平稳供给养分,增产效果明显;四是保护环境,降低面源污染;五是由于整个生长期基本不用追肥,降低农村劳动力强度和成本,适合农业需求。一、缓控释肥定义
In recent years, Beipiao City, drip irrigation water area has been expanding, the slow release of controlled-release fertilizer is also gradually increased. Slowly controlled release fertilizer commonly known as a long-effective fertilizer gun, it has five main characteristics, one is a long-term fertilizer, valid for up to 110 to 120 days; second, high nutrient utilization rate; third, steady supply of nutrients, Is to protect the environment and reduce non-point source pollution; Fifth, due to the basic needless top dressing throughout the growing season, reducing the intensity and cost of rural labor, suitable for agricultural demand. First, the definition of controlled release fertilizer