Method for continuously propagating large amount of Cnaphalocrocis medinalis in field

A rice leaf roller and field technology, applied in animal husbandry and other fields, can solve problems such as inconsistent ages, insufficient insect sources, inaccurate experimental results, etc., and achieve the effect of ensuring standardization and prolonging the planting time

Inactive Publication Date: 2011-03-16
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to mainly collect the experimental insect sources of traditional rice leaf rollers in natural fields, which are easily affected by the growth state of rice, the natural occurrence of rice leaf rollers and the development progress of larvae, etc., resulting in Insuf...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for continuously propagating large amount of Cnaphalocrocis medinalis in field
  • Method for continuously propagating large amount of Cnaphalocrocis medinalis in field
  • Method for continuously propagating large amount of Cnaphalocrocis medinalis in field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Network room construction and community design

[0021] (1) Establish an 8×40m nylon mesh room (circular arc type, 4 meters high) in the field, divide the nylon mesh room into 4 parts horizontally with nylon mesh, and plant tall, tall, Liangyoupeijiu or Zhongzheyou 1 hybrid rice with broad leaves and strong tillering ability.

[0022] (2) Normal field management, using sufficient nitrogen fertilizers (above 250kg / ha) to promote early rice growth, excessive growth and tender greenness, and spraying buprofezin or pymetrozine, which is ineffective against rice leaf rollers, to control rice planthoppers.

[0023] (3) The adult rice leaf rollers collected in the field during the rice tillering stage, using the green and tall habits of the rice leaf roller adults, concentrate the eggs in the tall rice areas where the previous sowing places are. With the development of rice leaf roller larvae, larvae or pupae of different ages were regularly collected for testing. ...

Embodiment 2

[0028] Example 2: Effects of Different Cultivation Methods on Feeding Leaf Roller Borer

[0029] Using the net room built in Example 1, the effects of different rice cultivation methods on raising the rice leaf roller were compared. Cultivation methods had little effect on rearing C. sativa. The number of C. sativa collected on transplanted rice was slightly higher than that on direct-seeded rice, but there was no significant difference.

[0030] Table 2 The number of 3rd instar larvae of the rice leaf roller harvested under different cultivation methods (head / clump of rice)

[0031]

Embodiment 3

[0032] Example 3: Effects of Different Nitrogen Fertilizers on Raising Rice Leaf Roller

[0033] The net room built in Example 1 was used to study the effect of different nitrogen fertilizer levels on the effect of raising rice leaf rollers. The number of rice leaf roller larvae obtained at the same age when the nitrogen fertilizer application rate was 250kg / ha was significantly higher than that of 100kg / ha.

[0034] Table 3 Number of 3rd instar larvae of the rice leaf roller harvested under different nitrogen fertilizer application rates (kg / ha) (head / clump of rice)

[0035]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for continuously propagating a large amount of Cnaphalocrocis medinalis in field, which comprises the following steps: (1) building a nylon net room which is 40 meters long and 8 meters wide in a field, dividing the nylon net room into four parts transversely, and continuously sowing seeds or transplanting rice seedlings in the independent divided parts every 25 to 30 days; (2) performing normal field management; (3) inoculating adults of Cnaphalocrocis medinalis into the first isolated part in a high tillering period of rice, and finally allowing 10 to 20 percent of senile larvae or pupae to propagate in the first part; and (4), in the peak emergence period of adults, opening a second isolated nylon net adjacent to the first isolated part for keeping the Cnaphalocrocis medinalis population in the net room going. Thus, larvae of the same age used for doing experiments can be bred continuously and in large amount and supplied continuously.

Description

technical field [0001] The invention relates to the fields of insect feeding and pest control, and provides a method for continuously mass-propagating the rice leaf roller in the field. Background technique [0002] The rice leaf roller Cnaphalocrocis medinalis (Guenee) is a migratory pest, which migrates from Vietnam and other places to the rice fields in southern my country every year, and is one of the most important pests on rice in southern my country (Shepard et al., 1995; Cheng Jiaan, 1996). Since 2000, the pest has become more and more serious in my country, with an average annual occurrence area of ​​more than 20 million hectares and an average annual grain loss of 760,000 tons. Especially in 2007, due to the influence of insect source base, climatic factors, planting conditions and other factors, the rice leaf roller occurred in a large area in the southern rice area of ​​my country, with an occurrence area of ​​25.3 million hectares, which was the year with the la...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01K67/033
Inventor 吕仲贤徐红星陈桂华姚小明郑许松杨亚军高广春
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap