CN104871885A - Control method for rice pest brown planthopper - Google Patents
Control method for rice pest brown planthopper Download PDFInfo
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- CN104871885A CN104871885A CN201510340495.7A CN201510340495A CN104871885A CN 104871885 A CN104871885 A CN 104871885A CN 201510340495 A CN201510340495 A CN 201510340495A CN 104871885 A CN104871885 A CN 104871885A
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- generations
- brown planthopper
- rice
- instar nymphs
- low instar
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
Abstract
The invention aims at providing a control method for rice pest brown planthopper. The method is able to apply medicine to rice and can effectively control brown planthopper attack. The method comprises the steps of investigating to obtain the quantity x of population of second generation of female adult brown planthopper with eggs on per 100 rice plants; if x is more than 0.4, applying medicine to control in the stage of low-age nymph produced by the second generation. With the adoption of the method, conditions for controlling in the stage of low-age nymph produced by the second generation are clear; therefore, the base number of brown planthopper source can be conveniently and effectively decreased, and as a result, the purpose of controlling the quantity of population of the third generation can be reached; meanwhile, the method is reasonable and necessary to apply the medicine, in order to further ensure normal growth of rice.
Description
Technical field
The present invention relates to agricultural insect pests control field, specifically about the prevention and controls of a kind of rice grub brown planthopper
Background technology
Brown planthopper is a kind of migratory pest, and it is one of Main Barrier Factors affecting China's Rice Production.Brown planthopper is an accumulation in rice field generation increment, In Middle And Lower Reaches of Changjiang River is moved into as the first generation between general annual May 21 to June 20, move between June 21 to July 20 as the second generation, so a generation breed in this locality two generation adult with move into two generation adult jointly breed on paddy rice, form three generations adult and spawning and hatching imago/nymph, in three generations and the generation outburst of main evil.Production generally adopts the technical measures of " under pressing control " or " pressure two control three " to the control of brown planthopper, each dispenser in low instar nymphs peak period that the low instar nymphs namely produced in two generations and three generations produce once, thus reaches the object of effective prevention and control.But differ greatly between the brown planthopper amount of moving into year, some time, the amount of moving into was comparatively large in early days, two generation generating capacity higher; Some time, the amount of moving into was larger in early days, and three generations is very easily broken out; But also have many times, the amount of moving into is little in early days, two generation generating capacity few or little.If all adopt unified fixing technology mode to prevent and treat, run counter to science, not only waste a large amount of manpower and materials, also cause indiscriminate use of pesticide.How many to the brown planthopper amount of moving in early stage at present, in two generations, just needed to prevent and treat, the ununified prophylactico-therapeutic measures in the whole nation.
Summary of the invention
The object of this invention is to provide the prevention and controls of a kind of above-mentioned rice grub brown planthopper, the method is accurate to paddy rice dispenser, has has effectively prevented and treated brown planthopper insect pest simultaneously.
A prevention and controls for rice grub brown planthopper, comprise the population number x of investigation acquisition two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains, as x>0.4, the low instar nymphs stage of producing in two generations carries out dispenser control.
According to prevention and controls of the present invention, specify that the low instar nymphs stage which kind of situation lower two generations produce needs to prevent and treat, effectively to force down worm source radix, reach the object controlling three generations's population number, the method dispenser is reasonable and necessary simultaneously, further ensures the normal growth of paddy rice.
Embodiment
A prevention and controls for rice grub brown planthopper, comprise the population number x of investigation acquisition two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains, as x>0.4, the low instar nymphs stage of producing in two generations carries out dispenser control.Above-mentioned x value is by selecting 50 pieces of rice fields, every block rice field random searching 20 clumps, and totally 1000 clumps, the mean value getting above investigation result obtains, and the unit of described x value is head/hundred clump, and wherein every clump of rice strain tiller number is about 12-13 strain.So-called bosom ovum female adult pest refers to the development of ovary to three grade and above long wing female adult pest, bosom ovum female adult pest belly expands, individual morphology feature is given prominence to, be easy to identify, therefore, cherishing by adding up for two generations the later stage index for control that ovum female adult pest quantity is used as brown planthopper, the work intensity because rice fulgorid kind, the length of time, identification difficulty caused and minimizing human error can being reduced, being significant to instructing brown planthopper preventing control method.This prevention and controls, specify that the low instar nymphs stage which kind of situation lower two generations produce needs to prevent and treat, effectively to force down worm source radix, reach the object controlling three generations's population number, the method is simple and practical simultaneously, and dispenser is reasonable and necessary, further ensures the normal growth of paddy rice.
More specifically technical scheme is that described prevention and controls is divided into following several administration way:
(1), during x≤0.4, the low instar nymphs peak period dispenser of producing three generations once.Namely when population number≤0.4 of two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains, show that the amount of moving into of brown planthopper in early stage is few, the low instar nymphs that two generations produced is few, without the need to control, only needs the low instar nymphs stage dispenser of producing three generations once can control full season brown planthopper insect pest.
(2), during 0.4<x≤2.1, each dispenser in low instar nymphs peak period that the low instar nymphs produced in two generations and three generations produce once.Namely show that the early stage amount of moving into is medium, so low instar nymphs stage of producing in two generations also needs dispenser to prevent and treat, and just can guarantee that the total worm amount in final field does not form harm.
(3) during x>2.1, the low instar nymphs peak period dispenser of producing in two generations once, the low instar nymphs peak period dispenser that three generations produces twice.Namely show that the early stage amount of moving into is large, the later stage brown planthopper may great outburst, so take measures to carry out dispenser control to the low instar nymphs stage that two generations produced, the low instar nymphs peak period dispenser twice that corresponding three generations produces, effectively can contain full season brown planthopper insect pest.
By above-mentioned controlling mode, effectively control the brown planthopper harm that may bring of full season, also improve the accuracy to paddy rice dispenser and necessity, reduce spraying times to greatest extent, the method environmental protection is effective.
The population number x of described two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains and three generations brown planthopper population number y meets generalized linear regression mathematical model: lny=0.943
*x-3.191
*c+0.703
*x
*c+7.200, c=0 or 1, represent that as c=0 the low instar nymphs stage of producing two generations is without prophylactico-therapeutic measures, represents during c=1 that the low instar nymphs stage to two generations produced takes dispenser prophylactico-therapeutic measures.Two generations control (c=1; Do not prevent and treat c=0) obviously can force down three generations's Population of Rice Brown Planthopper size y.When x≤0.4, represent that the amount of moving into is on the low side in earlier stage; When 0.4<x≤2.1, the amount of moving into is medium; As x>2.1, represent that the amount of moving into is large in earlier stage, three generations is great outburst very easily.By adding up the two population number xs of generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains, and according to this model, the population number y of the three generations brown planthopper after corresponding two generations prophylactico-therapeutic measures can be estimated.Y value is estimated in utilization, can determining that the low instar nymphs stage the need of producing two generations, three generations takes corresponding prophylactico-therapeutic measures, guaranteeing the necessity of dispenser and the safety of paddy growth, and its relatively traditional prophylactico-therapeutic measures medication has more reasonability.
Embodiment 1 selects 50 pieces of rice fields the mono-season medium rice Tanaka of plantation in 2009, every block rice field random searching 20 clumps, add up the population number of two generation brown planthopper bosom ovum female adult pest in rice strain, the mean value getting above-mentioned 1000 clumps of investigation results obtains x=0.2, utilize generalized linear regression mathematical model, as c=0, y predicted value is 1620.2/hundred clumps, lower than 2000/hundred clumps (medium and following occurred levels).Finally take the low instar nymphs to two generations produced not prevent and treat, the low instar nymphs control technical measures once that three generations produces, field damage losses controls within economic threshold.
Embodiment 2 selects 50 pieces of rice fields the mono-season medium rice Tanaka of plantation in 2014, every block rice field random searching 20 clumps, add up the population number of two generation brown planthopper bosom ovum female adult pest in rice strain, the mean value getting above-mentioned 1000 clumps of investigation results obtains x=0.4, utilize generalized linear regression mathematical model, as c=0, y predicted value is 1955.9/hundred clumps, lower than 2000/hundred clumps (medium and following occurred levels).Finally take the low instar nymphs to two generations produced not prevent and treat, the low instar nymphs control technical measures once that three generations produces, field damage losses controls within economic threshold.
Embodiment 3 selects 50 pieces of rice fields the mono-season medium rice Tanaka of plantation in 2008, every block rice field random searching 20 clumps, add up the population number of two generation brown planthopper bosom ovum female adult pest in rice strain, the mean value getting above-mentioned 1000 clumps of investigation results obtains x=1.4, utilize generalized linear regression mathematical model, work as c=0, y predicted value is 5017.7/hundred clumps, more than 2000/hundred clumps.Finally take each dispenser in low instar nymphs peak period technical measures that the low instar nymphs that produces in two generations and three generations produce, hundred clumps of worm amounts are 554.6/hundred clumps, and brown planthopper insect pest situation is effectively controlled.
Embodiment 4 selects 50 pieces of rice fields the mono-season medium rice Tanaka of plantation in 2012, every block rice field random searching 20 clumps, add up the population number of two generation brown planthopper bosom ovum female adult pest in rice strain, the mean value getting above-mentioned 1000 clumps of investigation results obtains x=2.0, utilize generalized linear regression mathematical model, work as c=0, y predicted value is 8838.5/hundred clumps, more than 2000/hundred clumps.Finally take each dispenser in low instar nymphs peak period technical measures that the low instar nymphs that produces in two generations and three generations produce, the hundred clumps of worm amounts 1484.5, brown planthopper field damage losses controls within economic threshold.
Embodiment 5 selects 50 pieces of rice fields the mono-season medium rice Tanaka of plantation in 2006, every block rice field random searching 20 clumps, add up the population number of two generation brown planthopper bosom ovum female adult pest in rice strain, the mean value getting above-mentioned 1000 clumps of investigation results obtains x=2.8, utilize generalized linear regression mathematical model, work as c=0, y predicted value is 18779.8/hundred clumps, and brown planthopper will be broken out; Work as c=1, y predicted value is still 5531.9/hundred clumps, more than 2000/hundred clumps.Once, the technical measures of the low instar nymphs peak period control secondary that three generations produces, hundred clumps of worm amounts control within 2000, effectively contain full season brown planthopper occurrence injury in the low instar nymphs peak period control finally taking to produce in two generations.
Shown by above embodiment, corresponding adopted prophylactico-therapeutic measures is simply effective, and the spraying times of paddy rice is at utmost reduced, and ensure that the normal growth of paddy rice.
Claims (3)
1. a prevention and controls for rice grub brown planthopper, comprise the population number x of investigation acquisition two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains, as x>0.4, the low instar nymphs stage of producing in two generations carries out dispenser control.
2. the prevention and controls of a kind of rice grub brown planthopper as claimed in claim 1, is characterized in that: described prevention and controls is divided into following several administration way:
(1), during x≤0.4, the low instar nymphs peak period dispenser of producing three generations once;
(2), during 0.4<x≤2.1, each dispenser in low instar nymphs peak period that the low instar nymphs produced in two generations and three generations produce once;
(3) during x>2.1, the low instar nymphs peak period dispenser of producing in two generations once, the low instar nymphs peak period dispenser that three generations produces twice.
3. the prevention and controls of a kind of rice grub brown planthopper as claimed in claim 1, is characterized in that: the population number x of described two generation brown planthopper bosom ovum female adult pest in every hundred clumps of rice strains and three generations brown planthopper population number y meets generalized linear regression mathematical model: lny=0.943
*x-3.191
*c+0.703
*x
*c+7.200, c=0 or 1, represent that as c=0 the low instar nymphs stage of producing two generations is without prophylactico-therapeutic measures, represents during c=1 that the low instar nymphs stage to two generations produced takes dispenser prophylactico-therapeutic measures.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107278741A (en) * | 2017-06-13 | 2017-10-24 | 仲恺农业工程学院 | The method that brown paddy plant hopper is prevented and treated using Harpactor fuscipes |
Citations (4)
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|---|---|---|---|---|
| CN101401562A (en) * | 2008-11-13 | 2009-04-08 | 江苏省农业科学院 | Acquiring method for special small brown rice planthopper for inoculating rice black-streaked dwarf virus |
| CN102578050A (en) * | 2012-03-02 | 2012-07-18 | 浙江大学 | Method for obtaining brown plant hoppers with rice ragged stunt virus and application of method |
| CN102870743A (en) * | 2012-10-12 | 2013-01-16 | 江苏省农业科学院 | Method for preserving rice black-streaked dwarf virus indoor living bodies |
| CN103667173A (en) * | 2013-11-27 | 2014-03-26 | 中国计量学院 | Method for primary culturing of brown planthopper cells |
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- 2015-06-18 CN CN201510340495.7A patent/CN104871885B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401562A (en) * | 2008-11-13 | 2009-04-08 | 江苏省农业科学院 | Acquiring method for special small brown rice planthopper for inoculating rice black-streaked dwarf virus |
| CN102578050A (en) * | 2012-03-02 | 2012-07-18 | 浙江大学 | Method for obtaining brown plant hoppers with rice ragged stunt virus and application of method |
| CN102870743A (en) * | 2012-10-12 | 2013-01-16 | 江苏省农业科学院 | Method for preserving rice black-streaked dwarf virus indoor living bodies |
| CN103667173A (en) * | 2013-11-27 | 2014-03-26 | 中国计量学院 | Method for primary culturing of brown planthopper cells |
Non-Patent Citations (2)
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| 张夕林等: "中晚粳稻区褐飞虱二代的防治指标和防治策略", 《南京农业大学学报》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107278741A (en) * | 2017-06-13 | 2017-10-24 | 仲恺农业工程学院 | The method that brown paddy plant hopper is prevented and treated using Harpactor fuscipes |
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Inventor after: Fang Chunhua Inventor after: Wu Weiguo Inventor after: Bao Zhouming Inventor after: Chu Zhijian Inventor after: Zhang Jianxi Inventor after: Wu Ying Inventor after: Wang Hao Inventor after: He Yimin Inventor after: Cheng Chuandong Inventor before: Fang Chunhua Inventor before: Wu Weiguo Inventor before: Wu Ying Inventor before: Hu Gao Inventor before: Bao Zhouming |
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Effective date of registration: 20170505 Address after: 245900 05 Shop 6, rose East District, Huizhou District, Anhui, Huangshan City Applicant after: Mount Huangshan fengle Valley Ecological Agriculture Development Co. Ltd. Address before: 245900 agricultural commission of Huizhou District, Anhui, Huangshan City Applicant before: Fang Chunhua Applicant before: Wu Weiguo |
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