CN102422829A

CN102422829A - Method for killing Laodelphax striatellus by utilizing pest taxis to plant

Info

Publication number: CN102422829A
Application number: CN201110310007XA
Authority: CN
Inventors: 王华弟; 杨廉伟; 汪爱娟; 章云斐; 朱金星
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-04-25

Abstract

The invention provides a method for killing Laodelphax striatellus by utilizing pest taxis to a plant. The method comprises the following steps: in the seedling stage, through adopting a mode of interval planting in fields and rice seedlings or a mode of planting around the periphery of the rice seedlings, planting white top Poa pratensis so as to induce Laodelphax striatellus to gather on the white top Poa pratensis and realize the centralized killing of Laodelphax striatellus gathering on the white top Poa pratensis. In the overwintering period of white top Poa pratensis in winter and in the over-summering period of white top Poa pratensis in summer, when the total population density of white top Poa pratensis is low, the method can be used for greatly trapping the white top Poa pratensis, thereby reducing the population base number of the white top Poa pratensis in the field; and the method is used for ridges or field borders at the periphery of rice and corn seedbeds, thus a large amount of white top Poa pratensis can be trapped, and the diseases of rice and corn viral and the damage to the rice and corn viral can be prevented and relieved. The method has good total trapping effect, is convenient for operation and saves cost, is an effective method for ecological treatment of rice diseases, and has significance for continuously controlling the generation of rice and corn viral diseases, ensuring the security of food production and product quality and protecting ecological environment.

Description

A kind of method of killing small brown rice planthopper of utilizing insect to the plant taxis

Technical field

The present invention relates to a kind of method of utilizing insect to the control small brown rice planthopper of plant taxis.

Background technology

Small brown rice planthopper Laodelpax striutellusFalle ' a is one of paddy rice primary pest; Not only get food rice shoot, heading stage in the harm of spike of rice suction juice at rice seedling; And carry and propagate black streak dwarf and stripe virus disease poison; Cause the large tracts of land of paddy rice and corn black streak dwarf and stripe virus disease popular, cause paddy rice and corn yield heavy losses.Therefore, the control small brown rice planthopper is taken place, and is popular for preventing that virus disease from taking place, and ensures grain security production, promotes that increasing peasant income are significant.For the stunt control of virus diseases such as disease of black streaked dwarf virus of rice and stripe virus disease, corn, still there is not the effectively medicament of treatment virus disease at present both at home and abroad, main employing " controlling the worm diseases prevention " method; The method of preventing and treating of tradition small brown rice planthopper mainly is to utilize chemical pesticide control, and its advantage is quick kill pests, and shortcoming is the frequent use of chemical pesticide; Not only increase the control cost, contaminated environment, killed natural enemies; And cause the pesticide resistance generation of insect, be difficult to fundamentally control insect pest and take place.

Summary of the invention

Technical problem to be solved by this invention provides a kind of method of killing small brown rice planthopper of utilizing insect to the plant taxis, with the method that adopts ecological management to being adapted to paddy rice primary pest and paddy rice and corn disease viral disease communication media insect small brown rice planthopper prevents and treats.For this reason; The present invention adopts following technical scheme: it is in the seedling stage of paddy rice; Mode that employing field and rice seedling are planted at interval or the mode of planting all around around rice seedling; The white top of plantation annual bluegrass lures small brown rice planthopper on the annual bluegrass of white top, to assemble, and the small brown rice planthopper that assembles on the annual bluegrass of dialogue top is concentrated desinsection.

Further, the present invention can during the phase, root out white top annual bluegrass at rice seedling plantation to five leaves.。

For solving the problems of the technologies described above; The present invention also can adopt following technical scheme: it is in the seedling stage of corn; Mode that employing field and maize seedling are planted at interval or the mode of planting all around around maize seedling; The white top of plantation annual bluegrass lures small brown rice planthopper on the annual bluegrass of white top, to assemble, and the small brown rice planthopper that assembles on the annual bluegrass of dialogue top is concentrated desinsection.

Further, the present invention can during the phase, root out white top annual bluegrass at maize seedling four leaves one core.

Utilizing the method for insect taxis desinsection, can obviously reduce the dependence to agricultural chemicals, help developing nuisanceless, green and organic farm products, is the developing direction of integrated pest control.At present, what these class methods were used has, as utilizes phototaxis desinsection (light trap), utilizes look insects (colour table), utilizes the taxis desinsection of hormone etc.But it is less to utilize insect that plant is got food taxis aspect Application Research.

The present invention is directed to small brown rice planthopper on host plant, survive the winter the summer with get the food characteristic, through investigation for many years, found its new host plant---push up annual bluegrass in vain.White top annual bluegrass is compared with raise crop (corn, rice), and raise crop small brown rice planthopper generating capacity is little, and it is big to push up annual bluegrass insect generating capacity in vain, greater than raise crop; Described concentrated desinsection adopts agricultural chemicals to kill, and also can adopt other modes to kill.Therefore, the host plant of getting food through plantation optimum small brown rice planthopper pushes up annual bluegrass in vain, lures collection to kill the small brown rice planthopper insect, can obtain good control efficiency.

The main implementation period of the present invention is paddy rice and corn seedling stage, is the period that virus disease is infected in the easiest propagation of small brown rice planthopper, and after seedling stage, paddy rice and corn do not receive small brown rice planthopper to propagate infringement basically, can root out white top annual bluegrass, in order to avoid fight for nutrition with raise crop.

Owing to adopt technique scheme of the present invention, in the winter time small brown rice planthopper survive the winter the phase with summer small brown rice planthopper get over the phase in summer, when the overall insect density of small brown rice planthopper is low, can lure the collection small brown rice planthopper in a large number, spray medicine and kill, reduction field small brown rice planthopper insect population radix; Ridge or field border planting around paddy rice and corn seedbed can lure the collection small brown rice planthopper in a large number, reduce that migration passes poison and endangers with the corn seeding stage to paddy rice, prevent and alleviate paddy rice and the corn disease viral disease endangers.The present invention lures totally that worm is effective, easy and simple to handle, cost is economized, and is a kind of effective ways of rice disease and pest ecological management, for Sustainable Control paddy rice and the generation of corn disease viral disease, guarantees grain-production and product quality safety, and it is significant to preserve the ecological environment.

Embodiment

Embodiment 1:

3 areas of sorting are respectively 2000 square metres big Tanaka in flakes, and all the maize planting seedling is planted white top annual bluegrass respectively, deceived grass, Bermuda grass around it.

The sorting area is in flakes in 2000 square metres the paddy field, and the rice cultivation rice shoot is its white top of spaced around plantation annual bluegrass.

Field investigation is found, small brown rice planthopper Laodelpax striutellusFalle ' a has than big-difference the food taxis of getting of different host plant; When particularly having the different host plant in the same area; Striatellus imago tends to be chosen in get on the strong plant of feeding habits gets food, causes different plant insect generating capacities to have than big-difference thus, sees following table 1, table 2 for details.

Small brown rice planthopper generating capacity comparison sheet on table 1 paddy rice, corn and the host weeds

Figure 201110310007X100002DEST_PATH_IMAGE001

(adopt 5 point samplings, uniform stationing is investigated 1 square metre at every.）

Table 2 different host plant ass plant hopper generating capacity comparison sheet

Figure 201110310007X100002DEST_PATH_IMAGE002

(5 point samplings are adopted in investigation, and uniform stationing is investigated 1 square metre at every, and every kind of host weeds are investigated 50 points.）

Above-mentioned investigation result of the test shows; Small brown rice planthopper is grassy weed---and push up annual bluegrass in vain and deceive the worm amount careless, that Bermuda grass is got food relatively; With white top annual bluegrass serves as maximum; Secondly for deceiving grass, be Bermuda grass once more, deceive grass and Bermuda grass worm amount and reduce 39.99% ~ 73.79% and 68.98% ~ 85.01% respectively than Zao who standing grain in white top; The small brown rice planthopper generating capacity that annual bluegrass and paddy rice and corn are got food seedling stage on white top relatively, paddy rice pushes up annual bluegrass in vain with corn field worm amount ratio and reduces 81.94% ~ 91.94% and 83.99% ~ 92.37% respectively.In view of the above; The present invention adopt two plant species in the field at interval or/mode of the plantation that lies around, paddy rice and the corn little with the insect generating capacity are the raise crop target, the host weeds that the insect generating capacity is big---pushing up annual bluegrass in vain is that insect lures the massive planting thing; Through luring concentrated medication kill pests on the massive planting thing; Agricultural chemicals to reduce on the target crop uses, thereby reduces the agricultural chemicals usage amount of paddy rice and the control of corn small brown rice planthopper, realizes controlling the purpose that grain is protected in the worm diseases prevention.

Embodiment 2:

Implementation method to rice seedling phase trapping small brown rice planthopper control virus disease is: the test region is that the rice seedling bed area is more than 300 meters; Plantation lures the collection weeds around the rice seedling bed---push up annual bluegrass in vain; Concentrate medication to kill in the more back of discovery striatellus imago, do not need medication control on rice seedling bed.Do not lure the collection weeds and do not plant around the rice seedling bed of check plot---push up annual bluegrass in vain, not medication of rice seedling bed control.The survey showed that, and test region small brown rice planthopper generating capacity reduces 82.78% ~ 91.24% than the check plot; Prevention and control black streaked dwarf virus of rice and stripe virus disease effect are 63.95% ~ 79.81%, see table 3 for details.

The plantation of table 3 rice seedling bed phase lures the effect of massive planting thing trapping small brown rice planthopper control virus disease

Figure 201110310007X100002DEST_PATH_IMAGE003

(adopt 5 samplings, uniform stationing is investigated 1 square metre at every)

Embodiment 3:

The implementation method of trapping and killing small brown rice planthopper control virus disease to corn seedling stage is: the test region is long-pending more than 100 square metres for the maize seedling bed surface; Plantation lures the collection weeds around the corn seedbed---push up annual bluegrass in vain; After finding the small brown rice planthopper insect, concentrate medication to kill, do not need to prevent and treat in corn medication in seedling stage.Do not plant around the corn seedbed, check plot and lure the massive planting thing---push up annual bluegrass in vain, corn is prevented and treated without medicine seedling stage.The survey showed that, and test region small brown rice planthopper generating capacity reduces 85.31% ~ 91.69% than the check plot, and the control of maize disease effect of stunting is 66.51% ~ 80.55%, sees table 4 for details.

The plantation of table 4 corn seedbed lures the effect of massive planting thing trapping small brown rice planthopper control virus disease

Figure 201110310007X100002DEST_PATH_IMAGE004

(adopt 5 samplings, uniform stationing is investigated 1 square metre at every)

Claims

1. method of killing small brown rice planthopper of utilizing insect to the plant taxis; It is characterized in that its seedling stage in paddy rice; Mode that employing field and rice seedling are planted at interval or the mode of planting all around around rice seedling; The white top of plantation annual bluegrass lures small brown rice planthopper on the annual bluegrass of white top, to assemble, and the small brown rice planthopper that assembles on the annual bluegrass of dialogue top is concentrated desinsection.

2. a kind of method of killing small brown rice planthopper of utilizing insect to the plant taxis as claimed in claim 1 is characterized in that it during the phase, roots out white top annual bluegrass at rice seedling plantation to five leaves.

3. method of killing small brown rice planthopper of utilizing insect to the plant taxis; It is characterized in that its seedling stage at corn; Mode that employing field and maize seedling are planted at interval or the mode of planting all around around maize seedling; The white top of plantation annual bluegrass lures small brown rice planthopper on the annual bluegrass of white top, to assemble, and the small brown rice planthopper that assembles on the annual bluegrass of dialogue top is concentrated desinsection.

4. a kind of method of killing small brown rice planthopper of utilizing insect to the plant taxis as claimed in claim 1 is characterized in that it during the phase, roots out white top annual bluegrass at maize seedling four leaves one core.