QX/T 583-2020 in English
VALIDGrade of waterlogging for summer maize
- Issued on:2020-11-05
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | QX/T 583-2020 |
| Document status: | VALID |
| Title in English: | Grade of waterlogging for summer maize |
| Title in Chinese: | 夏玉米涝渍等级 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-11-05 |
| Implemented on: | 2021-02-01 |
| Professional Classification: | QX-Meteorology |
| Related Keywords: | entire growth period core terminology waterlogging process
moderate waterlogging 0-100cm entire soil layer threshold standard ≥90 % field summer maize introduction analysis relative soil moisture |
| Related Topics: | waterlogging
corn grade summer corn Second class rice first-class corn moisture rice level two first-class corn quality Corn national standard level 1 English version Xiaomi gbt11766 standard grade Silk rice grade Rice flour processing grade qx/t-2020 qx/t 567-2020 |
Introduction
Analysis of the technical framework of the standard
This standard innovatively constructs a three-dimensional evaluation system based on the duration of 0~50cm soil relative humidity:
| Technical dimension | QX/T583-2020 | QX/T107-2009 (winter wheat) | GB/T32752-2016 |
|---|---|---|---|
| Monitoring depth | 0-50cm layered monitoring | 0-20cm surface monitoring | 0-100cm entire soil layer |
| Threshold standard | ≥90% field holding capacity | ≥85% field holding capacity | Continuous precipitation days |
| Growth stage division | Three-stage dynamic indicators | Two-stage fixed indicators | Uniform for the entire growth period |
Core Terminology
Waterlogging process: specifically refers to the number of consecutive days when the relative soil moisture is ≥90%. Please note:
- The process across growth periods is determined according to the standards of the previous stage
- Calibration and verification are required when using Automatic soil moisture station for monitoring
Application Case: Heavy Rainfall in Henan in 2021
Monitoring data in the tasseling period in Zhengzhou showed that: soil moisture at 0-50cm continued to be ≥90% for 18 days. According to the standard:
- A single process was judged as moderate waterlogging (15≤dRsM0-50<25)
- Combined with a mild process in the previous jointing period, it was finally assessed as severe waterlogging level
Technical details of grade classification
Differences in sensitivity of three key growth stages:
| Growth stage | Critical value of waterlogging tolerance | Yield loss rate |
|---|---|---|
| Seedling-jointing | 15 days | 18-25% |
| Jointing-tasting | 10 days | 30-45% |
| tasting-maturity | 7 days | 50-70% |
Recommendations for the implementation of the standard
1. Monitoring technical specifications
- It is recommended to use a frequency domain reflectometry soil moisture meter and observe at a fixed point at 10 a.m. every day
- The data needs to be calibrated in the field water holding capacity laboratory
2. Disaster assessment process
- Confirm the current growth period (BBCH standard)
- Calculate the number of days that the standard has been exceeded
- Confirm the single process level by comparing it with Table 1
- Determine the final level by combining it with Table 2
3. Grading response of defense measures
| Waterlogging level | Agronomic measures | Engineering measures |
|---|---|---|
| Mild | Cultivate and spread the soil moisture + foliar fertilizer | Unblock the furrows |
| Moderate | Apply quick-acting nitrogen fertilizer | Forced drainage by water pump |
| Severe | Change to crops with short growth period | Dig drainage pipes |
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
QX/T 318-2023 in English
Credit assessment specification for inspection institutions of lightning protection system
2023-04-23 -
QX/T 30-2021 in English
Technical specifications for lightning protection of automatic weather stations
2021-07-16 -
QX/T 210-2013 in English
Technical specifications for lightning protection of urban landscape lighting facility
2013-10-14 -
QX/T 109-2021 in English
Technical specification for lightning protection of city gas
2021-07-16 -
QX/T 615-2021 in English
Technical specification for lightning protection of urban rail transit
2021-05-10 -
QX/T 476-2019 in English
Observation specifications for aerosol PM10 and PM2.5 mass concentration-β-ray method
2019-01-26 -
QX/T 585-2020 in English
Cataloguing rules for meteorological satellite data
2020-12-29 -
QX/T 658-2023 in English
Requirements for the operation of ground-based seeding agents generator in rain( snow) enhancement
2023-04-23 -
QX/T 156-2021 in English
Digitization of wind autographic record- EL type
2021-05-10 -
QX/T 126-2011 in English
Test Method of Calibration Device for Aneroid Barometer(Barograph)
2011-04-07
