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NY/T 615-2002: Rules for the investigation and forecast of wheat spider
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Rules for the investigation and forecast of wheat spider
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NY/T 615-2002
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Basic data | Standard ID | NY/T 615-2002 (NY/T615-2002) | | Description (Translated English) | Rules for the investigation and forecast of wheat spider | | Sector / Industry | Agriculture Industry Standard (Recommended) | | Classification of Chinese Standard | B16 | | Classification of International Standard | 65.020 | | Word Count Estimation | 7,776 | | Date of Issue | 2002-12-30 | | Date of Implementation | 2003-03-01 | | Summary | This standard specifies the wheat spider documented occurrence degree programs and grading indicators system survey, census methods, forecasting data collection, reporting and aggregation methods. This standard applies to the implementation of investigation and forecast of wheat spider. | NY/T 615-2002: Rules for the investigation and forecast of wheat spider---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rules for the investigation and forecast of wheat spider
ICS 65.020
B16
People's Republic of China Agricultural Industry Standard
Mai spider survey report specification
Released on December 12,.2002
2003-03-01 implementation
Published by the Ministry of Agriculture
Foreword
Appendix A and Appendix B of this standard are normative appendices.
This standard was proposed by the Plantation Management Department of the Ministry of Agriculture.
This standard was drafted. National Agricultural Technology Extension Service Center and Shanxi Provincial Crop and Pest Measurement Station.
The main drafters of this standard. Jiang Yuying, Liu Yuqin, Liu Wancai, Zhang Yuejin, Feng Xiaojun.
Mai spider survey report specification
1 Scope
This standard specifies the project records and grading indicators for the occurrence of wheat spiders, systematic surveys, census methods, data collection, reporting and sinking.
The total method.
This standard applies to the implementation of the survey of wheat spiders.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
Systematic investigation
In order to understand the dynamics of the occurrence and growth of pests and diseases in a region, a survey of fixed-point, timing, and fixed methods was conducted.
2.2
Daejeon census
In order to understand the overall occurrence of pests and diseases in a region, a multi-point survey was conducted on a larger scale.
2.3
Recover damages
The yield loss of the crops recovered by controlling the pests and larvae, that is, the increased yield of the control area than the control area.
2.4
Actual loss
The yield loss caused by the remaining pests and diseases of the crops after the crops have been controlled by the pests and diseases.
2.5
Worm field rate
The percentage of wormfield blocks in the total number of surveyed fields was investigated.
2.6
Insect density
The number of insects in the unit sampling area. The spider is expressed as a single insect in 33.3 cm.
3 degree of occurrence index
The occurrence degree of wheat spiders is divided into 5 grades, which are mainly determined by the average insect population density at the peak of the local occurrence. See Table 1 for the indicators at all levels.
Table 1 Classification criteria for the occurrence of wheat spiders
Level 1 2 3 4 5
33.3cm single insect volume/head ≤.200 >.200 ~ ≤ 500 > 500 ~ ≤ 1000 > 1000 ~ ≤ 1500 > 1500
4 System investigation
4.1 Investigation time
After the wheat is returned to the heading period, it is investigated every 5 days. The investigation was conducted on the day of 8.00 to 10.00 or 16.00 to 16.00.
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