NY/T 497-2002

Agricultural extension workers, fertilizer manufacturers, and research institutions use this standard to design and conduct field trials for verifying fertilizer effectiveness. They rely on standardized experimental schemes, operational procedures, and data analysis methods to scientifically evaluate yield increase, quality improvement, or environmental benefits of fertilizer products. This standard ensures the consistency and comparability of fertilizer effect assessments, providing technical support for fertilizer registration, promotion, and rational application.

农业技术推广人员、肥料生产企业、科研机构使用本标准来设计和实施肥料效果验证的田间试验。他们通过标准化的试验方案、操作流程和数据分析方法，科学评价肥料产品的增产效果、品质改善或环境效益。该标准确保了肥料效应鉴定的规范性和可比性，为肥料登记、推广和合理施用提供技术依据。

This standard specifies the technical procedures for field experiments to evaluate fertilizer effects, covering experimental design, field operations, data analysis, fertilizer efficiency evaluation, and report writing. It is applicable to field verification of various fertilizer products. The standard requires at least 4 replications, using paired design or randomized complete block design with plot areas of 20-50 square meters. The main evaluation criteria include yield increase of over 5% with statistical significance, along with quality improvement and environmental benefits. Annexes provide detailed observation record forms and data analysis examples.

本标准规定了肥料效应鉴定田间试验的技术规程，包括试验方案设计、田间操作、数据分析、肥效评价和报告撰写。适用于各类肥料产品的田间效果验证。标准要求试验重复不少于4次，采用配对设计或随机区组设计，小区面积20-50平方米。肥效评价以增产5%以上且统计显著作为主要指标，同时考虑品质改善和环境效益。附录提供了详细的观察记录表和数据分析示例。