GB/T 15793-2026Specification for the investigation and forecasting of the rice leaf roller (Cnaphalocrocis medinalis) (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 15793-2011 "Technical Specification for Monitoring and Forecasting of Rice Leaf Roller". Compared with GB/T 15793-2011, except for the structure... Aside from adjustments and editorial changes, the main technical changes are as follows:

a) The overwintering survey methodology has been removed (see Chapter 2 of the.2011 edition);

b) Added a severity grading index (see Chapter 4);

c) Adult insect monitoring methods have been added, including conventional monitoring lamps, intelligent insect monitoring lamps, high-altitude monitoring lamps, and conventional pheromone/feed attractant equipment. In addition, the setup and usage instructions for automatic counting pheromone monitoring equipment; the "Investigation of Ovarian Development Progress of Adults and Female Moths" was changed to "Field..." "Chasing Moths" (see Chapter 5, Chapter 3 of the.2011 edition);

d) The methods for investigating egg quantity, larval quantity, and leaf curling rate were changed, as were the investigation time, location, and methods (see Chapter 6). (Chapters 4 and 5 of the.2011 edition)

e) The forecasting methodology has been modified, and a generational classification method has been added (see Chapter 7, Chapter 7 of the.2011 edition);

f) The methods for data collection, aggregation, and reporting have been changed, with "Data Aggregation and Transmission" and "Survey Data Forms" renamed as "Data Collection,..." The section on "Summary and Reporting" adds data items, data summary methods, and data reporting requirements (see Chapter 8,.2011 edition). Chapter 9). 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, Nanjing Agricultural University, Chinese Academy of Tropical Agricultural Sciences, and Guangdong Provincial Department of Agriculture. Pest Early Warning and Control Center, Zhejiang Provincial Plant Protection and Quarantine Station, Guizhou Provincial Plant Protection and Quarantine Station, Fujian Provincial Plant Protection and Quarantine Station, Guangxi Plant Protection Station of Zhuang Autonomous Region and General Plant Protection Station of Anhui Province. The main drafters of this document are. Zeng Juan, Zhang Yiyang, Liu Jie, Hu Gao, Lü Baoqian, Meng Zehua, Zhong Baoyu, Dai Dejiang, Tang Jianfeng, and Huang Xiaoyan. Huang Chengyu and Wang Beibei. The release history of this document and the document it replaces is as follows:

---First published in.1995 as GB/T 15793-1995, and revised for the first time in.2011;

---This is the second revision. Rice leaf roller monitoring and forecasting standards

1.Scope This document specifies the grading indicators for the occurrence of rice leaf roller, adult monitoring, egg quantity, larval quantity, and damage investigation and forecasting. Technical requirements for reporting, data collection, aggregation, and submission. This document applies to the monitoring, early warning, and forecasting of the rice leaf roller.

3.Terms and Definitions This document does not contain any terms or definitions that need to be defined.

4.Occurrence severity grading indicators The severity of rice leaf roller infestation is classified into five levels. light infestation (Level 1), slightly light infestation (Level 2), moderate infestation (Level 3), and slightly severe infestation. (Level 4), Major Outbreak (Level 5). The number of larvae per 100 clumps is the main indicator for classifying the severity of the outbreak, with leaf curling rate as a reference indicator. See details below. Table 1.

6 Survey of egg quantity, larval quantity, and leaf curling rate

6.1 Survey Period After rice transplanting, until the rice reaches the milk stage, egg and larval populations should be surveyed every 7 days; leaf curling rate should be surveyed once the damage is largely determined across generations. One more time will be held.

7 Forecasting and Prediction

7.1 Generation Division Based on the trans-regional migration characteristics of the rice leaf folder, and according to the consistency of the main occurrence period in major rice-growing areas, the occurrence of the rice leaf folder nationwide is divided into eight generations. Next, according to Appendix D.

7.2 Forecasting and Prediction Based on the number of moths attracted by light traps, food traps, and sex pheromones, the progress of female moth ovarian development, the number of insect eggs in the field, and the leaf curling rate, combined with future weather conditions, a comparison was made. Table 1 shows the severity grading indicators, which predict the peak period and severity of rice leaf roller occurrence, and issue forecasts or early warnings.

8 Data collection, aggregation, 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 Compile statistics on the occurrence and control of rice leaf roller, summarize the characteristics of occurrence, analyze the causes, and fill in the form according to Table A.5.

8.3 Data Reporting Plant protection agencies at all levels shall fill out the rice leaf roller record form and model report according to Appendix A and Appendix C every year and submit them to the superior monitoring and reporting department.