QX/T 283-2015 in English

VALID

Meteorological classification for anthracnose occurrence of Lycium chinense

Issued on:2015-07-28
Implemented on:2015-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $190.00
$185.00

Standard No:	QX/T 283-2015
Document status:	VALID
Title in English:	Meteorological classification for anthracnose occurrence of Lycium chinense
Title in Chinese:	枸杞炭疽病发生气象等级
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2015-07-28
Implemented on:	2015-12-01
ICS Classification:	07.060-Geology. Meteorology. Hydrology
Chinese Classification:	B18-Agricultural meteorology
Professional Classification:	QX-Meteorology
Related Keywords:	anthracnose occurrence meteorological classification anthracnose control disease occurrence national agricultural meteorological standardization technical committee
Related Topics:	anthrax Generator g3 grade Anthrax bacillosis Carbon Black Grade disease occurs QX anthrax biological grade virus Three-Stage Air Generator virus level Goji berry grade Tobacco anthrax investigation classification Hydrogen generator energy efficiency rating qx/t-264-2015

Introduction

Background and significance of the standard

This standard was proposed by the National Agricultural Meteorological Standardization Technical Committee and was formulated to meet the needs of anthracnose control in the main production areas of wolfberry. As an important medicinal plant in the Solanaceae family, wolfberry fruit affected by anthracnose can lead to a 30%-50% reduction in production. The standard established a quantitative relationship model between meteorological conditions and disease occurrence for the first time.

Analysis of core terms

Terms	Definition	Measurement method
Incidence rate	The percentage of diseased samples in the total survey samples	Field fixed-point sampling statistics
Disease index	A quantitative indicator of comprehensive incidence and severity	Formula calculation (see Appendix A)
Continuous precipitation time	Total duration of precipitation process	Hourly precipitation record of weather station

Meteorological grade determination system

The standard divides disease occurrence into 5 levels, and the determination indicators include:

Daily average temperature (16-30℃ is the prone range)
Daily precipitation (≥5mm trigger condition)
Continuous precipitation duration (≥6 hours increases risk)

Typical case: In July 2020, Zhongwei area of Ningxia experienced Te=25.3℃, R=22.6mm, T=14h meteorological conditions, and the actual monitored disease index reached 68, which is exactly the same as the standard prediction of Level 4 (severe occurrence).

Implementation and application suggestions

Monitoring and early warning: Initiate field survey when the forecast meets 16℃≤Te≤30℃ and precipitation ≥5mm
Prevention and control threshold: Chemical control should be implemented when the disease index reaches 20 (level 3)
Data collection: It is recommended to use standardized survey plots (5 plants × 2 branches × 15 fruits from a 0.1hm² plot)

Technology evolution analysis

Compared with early studies (such as Cheng Mian’s qualitative description in 1983), this standard has achieved three major breakthroughs:

The first multidimensional model of quantifying temperature-precipitation-duration
Establishing a standardized formula for calculating the disease index
Clearing the correspondence between fruit and leaf symptoms

More samples: YD/T 3934-2021 DL/T 5154-2012 JJG 21-2008

Sample only — not a preview of QX/T 283-2015