Comprehensive control of rice borer

The technology of comprehensive control of rice borer refers to the serious implementation of the plant protection policy of "prevention first and comprehensive control" in order to solve the bad situation of residual poison, resistance and rampant caused by long-term application of pesticides, and to minimize human and environmental pollution. Adhere to the prediction and forecast of diseases and insect pests, pest diagnosis, prescription to guide the prevention and control, so as to play the role of ecological regulation and control of farmland.

In view of the substantial adjustment of agricultural production structure in Jinggu County, while developing towards high-quality, high-yield and high-efficiency agriculture, comprehensive use of ecological control, biological control, physical control, high-efficiency, low-toxic and low-residue chemical pesticide control, the formation of a coordinated control system of rice borer can not only achieve the purpose of controlling the outbreak of rice borer, but also make the harmful substances in the product and environment meet the national standards. Production of pollution-free, pollution-free high-quality products.

1. To depress the base number of overwintering borer in the effective insect source field.

(1) autumn and winter prevention. Carefully consider which are the effective insect source fields in next spring in autumn, use withered heart mass and white panicle group as markers, cut off dead heart seedlings and white ear plants from the base before the larvae fully drop into the overwintering position, and fine soil preparation and remove rice stumps before sowing winter crops. in the early growth stage of winter crops, combined with intertillage and weeding, rice pile retting fertilizer was collected.

2) timely spring ploughing and retting. Eradicate the weeds on the edge of the field, irrigate and soak in time, and irrigate and plough the rice field before the emergence peak of the overwintering generation, so as to eliminate the overwintering borers on the edge of the field, grasses, rape stalks and grasses in time after winter, which can greatly reduce the occurrence base of borers in the same year.

Second, set up trapping and killing fields and control the base number of small fields.

Although the area of early planting fields in the county is small, during the peak emergence of the first and third generations of borer moths obtained in late April and mid-July, early planting rice, especially early rice fields and late rice fields, have grown green, and the number of eggs laid by adults can account for about 70% of the total egg production in contemporary times.

Third, sun up the field at the right time

Early rice is suitable for drying the field before May 25 and two nights before August 25; the rice field that is early enough to sun up early and does not reach the seedling standard should be dried at the end of the drying stage; the fertile field should be heavily exposed until people step on footprints, do not touch the mud or crack the surface of the field. Drying the field can effectively reduce the number of eggs laid by borer moth and reduce the damage rate of borer.

4. pay close attention to the control of ant borer at booting and heading stage of late-maturing varieties.

The peak occurrence period of the second and fourth generations of ant borer is often consistent with the broken heading stage of early and late rice varieties (easy to invade). According to the crossing period of rice growth period and the peak hatching period of borer eggs, and acting as special drugs for borer control, such as Chilo suppressalis Shijing, rice borer clear, Ruijingte, etc., to control the ant borer invading the young ear, the white panicle rate can be reduced.

5. cultivation and control of borer

Rational distribution of rice cultivation, adjustment of sowing date, popularization and application of varieties resistant to borer can relatively reduce the damage of borer.

6. rush for harvest and quick ploughing to kill stubble

Early rice should be harvested in time after ripening, rapid ploughing and rush harvest, and pumping water into the field as soon as possible in some dry areas with little rain, which can effectively eliminate most of the larvae and pupae in the grass grass and greatly reduce the occurrence of the third generation.

VII. Scientific use of drugs

High-efficiency and long-acting corresponding pesticides were selected, and farmers were instructed to administer the medicine according to the predicted time, mainly using borer Shijing, rice borer clear, triazophos and fipronil to control borer.

VIII. Protect natural enemies

The "safe pool" and "safe forest" of some natural enemies are deliberately set up in the rice field to create places conducive to natural enemies to perch and breed, so that natural enemies can avoid pesticide poisoning, thus increasing the reproduction coefficient of natural enemies and protecting the mass reproduction of natural enemies; at the same time, pesticides with low lethality of natural enemies are selected to reduce the killing of natural enemies and increase the rate of natural enemies smelting borer.

IX. Extensive application of modern science and technology

The selection of gene insect-resistant varieties and the promotion and application of advanced technologies and skills such as mathematical statistical information system will have a great effect on the integrated control of borer.