T/YNRZ 024-2022 Technical specifications for integrated water and fertilizer management of small-grain coffee cultivation

Scope

Scope: This document stipulates the basic principles of integrated water and fertilizer management for small-grained coffee cultivation, irrigation water sources, irrigation fertilization equipment, fertilizer selection and application, irrigation management, and integrated water and fertilizer management programs. This document is applicable to the field irrigation and fertilization management of small-grained coffee. Main technical content: 1. Terms and definitions: The following terms and definitions apply to this document. 1.1 Integrated management of water and fertilizer, also known as irrigation and fertilization, which integrates irrigation and fertilization processes with efficient irrigation systems. The irrigation water is used as a carrier to dissolve fertilizers in water and apply fertilizers during irrigation, meeting the water and nutrient needs of fruit trees in a timely and appropriate manner, achieving efficient utilization of water and fertilizer. 2. Basic principles: 2.1 Combine fertilization with efficient water-saving irrigation methods, such as drip irrigation, micro-spray irrigation, spring root irrigation, pipe irrigation, infiltration irrigation, and drag-pipe irrigation. 2.2 Adopt different water and fertilizer optimization programs based on the growth stage, climate environment, and soil fertility of small-grained coffee. 2.3 Select micro-irrigation equipment types and parameters based on the location of irrigation water sources, water quality conditions, terrain and geomorphology, and soil types, and determine the pipeline layout. 2.4 Select water-soluble fertilizers suitable for coffee growth based on different fertilizer types and fertilizer efficacy, achieving water and fertilizer compatibility, water-promoted fertilization, fertilizer-adjusted water, and water and fertilizer conservation. 3. Irrigation water sources: 3.1 Rivers, mountain springs, reservoirs, rainwater collection tanks, groundwater, etc. can all

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