The two-pointed genus is a group of outbreaking pests. The National Agricultural Technology Promotion Center organized experts to predict that in 2012, the pest will occur in most of the wheat in the Huanghuaihai, and the expected area will exceed 40 million mu. If the peak of larvae coincides with the summer maize seedling stage, it will pose a serious threat to the production safety of summer maize. In order to do a good job in the prevention and control of pests and diseases of the second point of the corn field, this program was specially formulated.
First, the prevention and control objectives
The control rate of corn mites is more than 90%, the overall control effect is more than 85%, and the damage loss rate is controlled below 5%.
Second, prevention and control strategies
According to the characteristics of the occurrence of the second moth, the safety of summer maize production is taken as the core, and the green prevention and control technology is used as the support. The comprehensive prevention and control strategy is supplemented by agricultural prevention and control, supplemented by chemical and physical control.
Third, prevention and control measures
(1) Key points of prevention and control
Mainly in the wheat field in the wheat field, the wheat field in the high-yield wheat field and the wheat field covered with thick wheat fields are the focus. The key prevention and control period is before the wheat harvest and after the 6-leaf stage of summer maize seedlings.
(II) Main prevention and control technical measures
Agricultural measures
1.1 Deep-plowing winter leisure fields: In April, combined with the sowing of spring-sown crops such as cotton, deep-plowing the plots of the winter squatting fields such as cotton fields and bean fields, and destroying the habitats of the winter larvae of the larvae, reducing the insect source. Cardinality.
1.2 Before the sowing: When the wheat is harvested, the rotary tillage and smashing device is hanged on the harvester to smash the wheat straw; at the same time, the application of the straw rotant in the wheat field can not only worsen the living environment of the pest, but also effectively reduce the damage of the larvae and increase the corn. The quality of sowing, to reach the seedlings and seedlings.
1.3 Remove the cover of the corn seedling roots: promptly remove the wheat straw and wheat bran around the corn seedlings, reduce the suitable environment of the two-pointed moth, and eliminate the favorable conditions for its occurrence. Once the larval damage occurs, clean the field and gather the wheat straw at the base of the corn seedlings to protect the seedlings.
2. Physical control
At the beginning of the wheat harvest, the insects were used to induce large-scale trapping of the adults of the larvae of the larvae, and the conditioned areas were smothered by a lamp lamp every 30-50 mu to reduce the amount of eggs in the summer corn field and reduce the insects. The source base number is reduced.
3. Chemical control
3.1 Seed treatment: using 70% imidacloprid wettable powder for seed dressing or coating agent containing the above ingredients, on the basis of controlling underground pests, it can treat the two-pointed moth.
3.2 Pre-emergence spray after sowing: For the unrotated wheat field, before the emergence of summer corn, combine with the corn field to "sealing", "kill" weeding to add organophosphorus pesticides , or use organophosphorus pesticides to spray the whole field, try to use high pressure sprayer The covered wheat straw is penetrated to kill the adult eggs and eggs that lay eggs on the wheat straw and the young larvae that feed on the wheat seedlings. The use of chlorpyrifos, phoxim emulsifiable concentrate and avermectin can be used to avoid the use of pyrethroid pesticides alone.
3.3 Post-emergence spray: Before the 6-leaf stage of corn, control the larvae of the larvae, and unscrew the nozzles, spray the liquid through the ridges, or spray the roots directly with the nozzle to directly kill the older larvae.
3.4 bait trap: use chlorpyrifos or phoxim + dichlorvos + crushed green leaves (or weeds) + sauteed wheat bran, watered to the group can be made into a poison bait, placed in the evening sloping ridge through the clear ridge Do not sprinkle around the corn roots.
3.5 Poisonous soil: Use chlorpyrifos or phoxim to make toxic soil evenly spread around the roots of the corn through the ridge, but keep a certain distance from the corn seedlings.
Fourth, the professionalization of the main control technology
(1) Physical trapping technology
At the time of wheat harvest, the adult moths of the larvae of the larvae were unified, and the insects were used to trap the adults of the larvae.
(2) Before the broadcast
When the wheat is harvested, the rotary tillering device is hung on the harvester, and the wheat straw is crushed before the summer corn is planted, and the spawning and habitat of the larvae are destroyed.
(3) Qing Bao Miao
After the emergence of corn, the wheat straw and wheat bran around the corn seedlings are removed in time to destroy the habitat of the two-pointed moth, and the damage is reduced. At the same time, the chemical control drugs are in place to achieve the effect of protecting the seedlings.
(4) Chemical control
1. Seed treatment: uniform seed dressing with chemical agents.
2. Pre-emergence spray after sowing: Before the emergence of summer wheat in the wheat field, the whole field spray, emphasize the spray to penetrate, eliminate the eggs and young larvae.
3. Post-emergence spray: Before the 6-leaf stage of the corn seedlings, spray the whole field, or unscrew the spray head, spray the liquid through the ridge, or directly spray the roots with the spray head to directly kill the older larvae.
4. Poisonous soil and poison bait around the seedlings: use poison baits or poisonous soil to spread the seeds, pest control seedlings.
V. Key work measures
(1) Strengthening monitoring and early warning
According to the occurrence characteristics of the two-pointed moth, the yellow-Huaihai summer maize area should be used to observe the adult dynamics of the larvae of the larvae before the wheat harvest, and the larval number and the damage of the corn were investigated in time after the emergence of the summer maize. Timely release of the occurrence trend of the two-pointed moth, and guide the prevention and treatment.
(2) Do a good job in publicity and guidance
The two-pointed moth is a new pest, which is concealed and harmful. The critical period of prevention and control is short. In particular, the grassroots technicians and farmers lack understanding, and it is difficult to grasp the key opportunities in prevention and control. All levels should increase publicity, use on-site training sessions, invented white papers, TV lectures and other forms to widely publicize the identification characteristics, hazard characteristics and scientific prevention techniques of the two-pointed moth, and truly realize the prevention and control technology into the village. Enter the household.
(3) Carrying out unified defense
The two-pointed moth is strong, concealed and violent. Once the prevention and treatment is not timely, it often causes serious loss of corn. Therefore, it is required to grasp the corn 6 leaves according to the principle of “preventing early treatment and eliminating insects and protecting seedlingsâ€. In the key prevention and control links of the former young larvae, we will carry out unified prevention and control. At the same time, we will do a good job in the investigation of the effects, so as to timely check and fill the gaps, and leave no dead ends to ensure the safe production of summer corn.
Pesticide price:
Biological pesticides:
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