QX/T 409-2017 in English

Standard Framework and Technological Evolution

This standard, my country's first industry standard specifically for tomato-specific agrometeorological observation, establishes a dual-track observation system combining "parallel observation and integrated observation and observation." Compared to the 1993 edition of the "Agrometeorological Observation Specification," it adds six new technical innovations, including yield structure analysis and quantitative assessment of pests and diseases, achieving a leap from qualitative description to quantitative analysis.

Core Observation Index System

Typical application scenarios

Solutions to implementation difficulties

1. Regression of development period: Re-test immediately according to clause 4.6.2, with the last observation as the basis, and note the environmental mutation factors
2. Complex disaster assessment: Establish a weight matrix with reference to Table 2, and give priority to recording the dominant disaster (e.g., hail is the main disaster when hail is superimposed on continuous rain)
3. Observation of plant replacement: When a single measuring point has ≥3 plants and loses its representativeness, re-select a site according to clause 4.6.4 and retain the original data for comparison

Innovative value of the standard

• Established the corresponding relationship between the tomato growth period and accumulated temperature for the first time (e.g., the budding period requires ≥650℃·d)
• Innovatively proposed the "economic coefficient" indicator (0.35-0.55 is optimal) to quantify the cultivation benefits
• Appendix C contains diagnostic maps of 23 pests and diseases, enabling rapid identification in the field