GB/T 15794-2026Specification for the investigation and forecasting of rice planthoppers (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 15794-2009 "Specification for Rice Planthopper Monitoring and Survey". Compared with GB/T 15794-2009, the main differences are in the structural adjustments. Aside from editorial changes, the main technical changes are as follows:

a) The terms "overwintering", "overwintering area", "free-growing rice with shattered grains", "ratoon rice", "young larvae", "old larvae", and "peak period of adult insects in the field" were deleted. Terms and definitions for "peak day", "peak oviposition", "peak nymphal stage", "outbreak rate", "outbreak area" and "outbreak area percentage" (see.2009) Versions 2.1~2.6, 2.8~2.12);

b) The overwintering survey methodology has been removed (see Chapter 3 of the.2009 edition);

c) The severity grading criteria have been revised, and grading criteria for white-backed planthoppers and brown planthoppers have been added (see Chapter 4,.2009 edition, 10.2);

d) The light trap monitoring method was changed; the incandescent light trap monitoring method was removed, and conventional monitoring lamps, intelligent insect monitoring lamps, and others were added. Monitoring methods for high-altitude weather forecast lights (see Chapter 5, Chapter 4 of the.2009 edition);

e) The methods for surveying field insect populations have been changed, including "systematic survey of field insect populations," "systematic survey of field egg populations," "general survey of field insect infestations," and "damage." The "Current Situation Survey" has been merged into the "Systematic and Field Survey," and related content has been streamlined (see Chapter 6, Chapter 5 of the.2009 edition). Chapter 9);

f) The main predator survey method has been removed (see Chapter 8 of the.2009 edition);

g) Added forecasting and prediction methods (see Chapter 7);

h) The data collection, summarization, and reporting methods have been changed, replacing "organization, reporting, and archiving of monitoring and forecasting data" with "data collection, summarization, and reporting." The document includes a section on "Reporting" and adds methods and requirements for data collection, summarization, and reporting (see Chapter 8, Chapter 10 of the.2009 edition). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the Ministry of Agriculture and Rural Affairs of the People's Republic of China. This document was drafted by: National Agricultural Technology Extension Service Center, China National Rice Research Institute, Nanjing Agricultural University, and Nanjing University of Information Science and Technology. Agricultural and Rural Affairs Department of Sichuan Province Plant Protection Station, Guangdong Provincial Agricultural Pest Early Warning and Control Center, Chongqing Seed Station, Jiangxi Provincial Department of Agriculture and Rural Affairs Industrial Development Service Center. The main drafters of this document are. Zeng Juan, Zhang Yiyang, Liu Jie, Fu Qiang, Hu Gao, Wu Qiulin, Yang Qingpo, Bian Yue, Zhang Mei, Huang Dechao, and Wang Zele. Shi Weitao. The release history of this document and the document it replaces is as follows:

---First published in.1995 as GB/T 15794-1995, and revised for the first time in.2009;

---This is the second revision. Rice planthopper monitoring and survey guidelines

1 Scope

GB/T 15794-2026 is the Chinese national standard covering monitoring rice planthoppers - the light traps and field counts, the migration that brings them into China on the monsoon airflow each year, and the forecast that tells a province when to act. It replaces GB/T 15794-2009 and has been in force since 1 October 2026, with the rice stem borer standard GB/T 15792-2026. It was issued on 31 March 2026 and takes effect on 1 October 2026, replacing GB/T 15794-2009. The document is under the responsibility of the Ministry of Agriculture and Rural Affairs. This page is published from the official record of the 2026 edition; the clause text of a standard this recent is not yet in circulation, and the figures, limits and tables it contains are those of the document itself, delivered in full with the English translation.

This document defines the terminology and definitions for rice planthopper monitoring and forecasting, specifies the grading indicators for occurrence severity, and describes light-attracting monitoring, systems, and... Methods such as field surveys, forecasting, and information reporting. This document applies to the monitoring and surveying of rice planthoppers.

4.Occurrence severity grading indicators Based on the weighted average number of insects per 100 clumps, the grading is divided into 5 levels according to Table 1.

5 Light-attracting monitoring

5.1 Monitoring Time The observation period begins 10 days before the first appearance of adults in the earliest years observed locally, and ends 10 days after the last appearance of adults in most years. The observation period lasts from

18.00 to the following day.

06.00 Lights on for monitoring.

6 System and Field Survey

6.1 Survey period After the initial peak period observed under the lights, surveys were conducted every 7 days.

7 Forecasting and Prediction

7.1 Generation Division Based on the trans-regional migratory characteristics of rice planthoppers, and according to the consistency of the main occurrence period in major rice-growing areas, the occurrence of rice planthoppers nationwide is divided into eight generations, see [reference needed]. Appendix D.

7.2 Forecasting and Prediction Based on the number of insects attracted by the light traps, the number of insect eggs in the field, and the proportion of long-winged and short-winged nymphs, and referring to Appendix E for the developmental stages of each insect at the same temperature throughout the year, Based on future weather conditions and referring to the severity grading indicators in Table 1, the peak period and severity of rice planthopper outbreaks are predicted, and early warning information is issued.

8 Data collection, summarization, and reporting

8.1 Data Collection Collect and organize local rice planting area, main varieties, sowing period and local meteorological data.

8.2 Data Summary The occurrence and control of rice planthoppers were statistically summarized, their characteristics were analyzed, and their causes were examined. A basic statistical table of rice planthopper occurrence and control was completed. (See Table B.4)

8.3 Data Reporting Plant protection agencies at all levels shall fill out the rice planthopper survey record form and model report according to Appendix B and Appendix C every year and submit them to the superior monitoring and reporting department. GB/T 15794-2026. Specification for Monitoring and Surveying Rice Planthoppers ICS

15 National Standards of the People's Republic of China Replaces GB/T 15794-2009 Rice planthopper monitoring and survey guidelines Published on 2026-03-

31 Implemented on October 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.