04,03,2026 2 views
According to the prediction of the National Agricultural Technology Center, the overall occurrence of rice diseases and pests in China will be more severe in 2026, with the overall occurrence of the rice stem borer being more severe, the rice planthopper, rice leaf roller, sheath blight, and apple snail being more severe, and the overall occurrence of rice blast disease being moderate. Rice blast disease, southern rice black stripe dwarf disease, white leaf blight disease, bacterial base rot disease, rice nematode disease, rice thrips, rice stem borer, tarsal mite, rice leafhopper, rice whitefly, rice gall midge and other diseases and pests will occur in local rice areas. In order to do a good job in the prevention and control of rice diseases and pests in 2026, and promote the large-scale yield increase of rice, the National Agricultural Technology Center has formulated this plan.
1、 Prevention and control strategies
Adhere to the principle of prevention first and comprehensive prevention and control, based on advancing the checkpoint and treating early and small cases, with the selection of resistant (or disease tolerant) varieties and the establishment of a healthy rice field ecosystem as the basis, implement ecological regulation and agronomic measures, promote the application of green prevention and control technologies such as physical and chemical induction and biological control, use efficient and low-risk pesticides reasonably and safely, and ensure that the loss rate of pest and disease hazards is controlled within 5%.
2、 Key points of prevention and control
（1） South China Rice Region.The traditional double cropping rice planting areas in Guangdong, Guangxi, Fujian, Hainan and other provinces (autonomous regions) focus on the prevention and control of rice planthoppers, rice leaf rollers, chilo suppressalis, chilo suppressalis, snails, rice blast, sheath blight, bacterial leaf blight, rice false smut, and pay close attention to southern rice black streaked dwarf disease, Taiwan, China rice borer, giant borer, rice thrips, rice stem miner, rice gall midge, tarsal mite, rice whitefly, and rice kernel smut.
（2） Single and double season mixed planting rice area in the middle and lower reaches of the Yangtze River.The mixed planting areas of single and double season rice in Hunan, Jiangxi, Hubei, Zhejiang, Fujian and other provinces focus on the prevention and control of rice stem borer, rice planthopper, rice leaf roller, apple snail, sheath blight, rice blast disease, rice blast disease, ear rot disease, bakanae disease, white leaf blight disease, bacterial base rot disease, and closely monitor the southern rice black stripe dwarf disease, rice stem borer, rice thrips, rice leafhopper, rice stem borer, tarsi mite, and rice nematode disease.
（3） Single season rice growing area in the middle and lower reaches of the Yangtze River.The single season rice planting areas including Hubei, Jiangsu, Zhejiang, Anhui, Shanghai and other provinces (municipalities directly under the central government) focus on preventing and controlling rice planthoppers, rice stem borers, rice leaf rollers, apple snails, rice blast disease, sheath blight, rice blast disease, and white leaf blight. Close attention is paid to rice stem borers, bacterial base rot disease, rice nematode disease, and panicle rot disease.
（4） Southwest Rice Region.The single season rice planting areas including Yunnan, Guizhou, Sichuan, Chongqing and other provinces (municipalities directly under the central government) focus on preventing and controlling rice planthoppers, rice leaf rollers, rice stem borers, apple snails, rice blast disease, sheath blight, rice blast disease, and southern rice black stripe dwarf disease. Close attention is paid to sticky insects, rice stem borer, white leaf blight, bacterial base rot, rice nematode disease, and panicle rot disease.
（5） Huanghuai Rice Region.Including single season rice planting areas in Anhui, northern Jiangsu, Henan, Shandong and other provinces, the focus is on preventing and controlling rice stem borer, rice planthopper, rice blast disease, sheath blight, and rice blast disease, closely monitoring rice nematode disease, rice leaf roller, black stripe dwarf disease, and stripe leaf blight disease.
（6） Northern rice growing region.Including single season japonica rice planting areas in provinces (autonomous regions, municipalities directly under the central government) such as Heilongjiang, Jilin, Liaoning, Hebei, Tianjin, Inner Mongolia, Ningxia, Xinjiang, etc., the focus is on preventing and controlling rice blast disease, bakanae disease, sheath blight, rice nematode disease, and rice stem borer. Close attention is paid to rice blast disease, ear rot disease, rice leaf miner, mud worm, gray planthopper, sticky insect, and rice stem borer.
3、 Prevention and control measures
（1） Non chemical green prevention and control technology
1. Choose varieties with resistance (tolerance).Select rice varieties that are resistant (tolerant) to diseases and pests such as rice blast disease, white leaf blight, stripe disease, rice blast, black stripe dwarf disease, southern rice black stripe dwarf disease, brown planthopper, and white backed planthopper according to local conditions, and avoid planting highly susceptible varieties. Pay attention to planting resistant rice varieties with different genetic backgrounds based on the dominant races of local rice blast and bacterial leaf blight pathogens.
2. Ecological regulation.Adopting ecological engineering technology, planting flowering plants such as sesame, soybean, cosmos, sulfur chrysanthemum, and purple clover on the field ridges, roadside ditches, and machine plows, while retaining functional grasses such as foxtail grass, constructing ecological prevention and control corridors, conserving and protecting parasitic wasps, spiders, and other natural enemies, improving the biodiversity of rice fields, and enhancing the natural control ability of natural enemies; In the area of high pest infestation, plant lure plants such as vetiver grass at a distance of 3-5 meters to reduce the population base of the pest.
3. Agricultural measures.(1) Plowing and irrigating to exterminate pupae. In the area of heavy infestation of stem borers, during the pupal stage of overwintering generation stem borers, they are uniformly plowed in winter idle fields and green fertile fields, irrigated with deep water to plow the entire field, and submerged in rice piles for 7-10 days to reduce the number of insect sources. (2) Fitness cultivation. Timely sun drying of the fields, avoiding excessive or biased application of nitrogen fertilizers, and appropriately increasing the application of phosphorus, potassium, and silicon fertilizers, combined with the use of microbial agents, to improve the rhizosphere soil environment. (3) Rice duck co breeding. In rice fields with conditions, about 10 15-20 day old ducklings are placed per acre during the early tillering stage of rice, and the ducks are harvested when the rice ears are full to reduce the occurrence and damage of diseases such as rice sheath blight, planthoppers, and snails. (4) Clean up the countryside. Low crop harvesting, comprehensive utilization of straw after leaving the field, avoiding the direct return of straw from fields with high incidence of stem borer, rice blast disease, sheath blight, and bacterial diseases.
4. Physical and chemical inducement and control.At the beginning of the overwintering generation of the rice stem borer, the large stem borer, and the main pest generation of the rice leaf roller, sex pheromones are concentrated and set up in a contiguous manner, with mating interference or group trapping. One is mating interference, using a high-dose sex pheromone intelligent spraying device, with one set set set every 3 acres, or placing bag shaped directional dispersers in the field, with an average of 6 per acre. The second is cluster trapping, using volatile core (lure core) and dry moth traps with a shelf life of more than 3 months, with an average of 1 set per acre and evenly placed in the field.
5. Biological pesticides.For diseases and pests such as the rice stem borer, rice leaf roller, rice planthopper, apple snail, rice blast disease, sheath blight, and Fusarium wilt disease, priority is given to using biopesticides such as Bacillus thuringiensis, Metarhizium anisopliae, Bacillus subtilis, cabbage armyworm nuclear polyhedrosis virus, rice leaf roller granule virus, azadirachtin, matrine, tea saponin, Bacillus subtilis, Jinggangmycin A, Chunleimycin, polymyxin, sulfamethoxazole, Jinggang Fusarium oxysporum, osthole, allicin, and oligomale saprotus.
6. Release the red eyed bee.During the peak period of the main pests of the rice stem borer and the rice leaf roller moth, release the rice stem borer red eyed wasps 2-3 times per generation, with an interval of 3-5 days between each release. The number of wasps per acre per release is 8000-10000, evenly placed at 5-8 points. The appropriate height for placing bee cards is 5-20 centimeters above the top of the plant during the tillering stage and 5-10 centimeters below the top of the plant during the panicle stage. The ball can be dropped and thrown directly into the field. It is advisable to release bees in the evening during the high temperature season.
7. Physical barriers.In areas where viral diseases such as rice black stripe dwarf disease and black stripe dwarf disease are prevalent in southern China, as well as in areas with a high incidence of rice stem borer, 20-40 mesh insect nets or 15-20 grams/square meter non-woven fabrics are used to cover the entire seedling field for seedling cultivation, or factory centralized seedling cultivation is adopted. Install barrier nets at the inlet and outlet of irrigation channels or at the inlet and outlet of rice paddies where apple snails are severely affected, to prevent apple snails from entering the field with water.
（2） Scientific drug technology
1.Seed processing.Before sowing, soak or mix seeds with seed treatment agents such as fluazuron, fipronil, thiamethoxam, clothianidin, oxytetracycline, isothiocyanate, and fluazuron to prevent seed borne or seedling diseases such as bakanae, rice blast, rice nematode disease, rice planthopper and its transmitted viral diseases, Fusarium wilt, rice thrips, etc.
2. Transplant with medicine.Apply systemic pesticides 3 days before transplanting seedlings to prevent stem borers, rice leaf blight, rice thrips, rice planthoppers, and viral diseases transmitted by them; For areas where rice nematode disease occurs, soil treatment in seedbeds and root soaking treatment with pesticides before transplantation.
3. Immune induction.Apply plant growth regulators such as iron chlorin, paclobutrazol, naphthylacetic acid, and gibberellin, or plant inducers such as amino oligosaccharides, to enhance rice resistance.
4. Comprehensive pesticide application.Based on the main types, severity, and occurrence periods of diseases and pests in different growth stages of rice, determine the treatment targets and suitable prevention and control periods according to local conditions. Apply pesticides to prevent diseases such as rice blast, rice blast, and sheath blight, and use tea yellow liquid and other pesticide additives to prevent and control pests such as the rice stem borer, rice leaf roller, and rice flying lice.
(1) The rice stem borer.The indicator for chemical control is that the rate of withered sheath clusters during the tillering stage reaches 8% -10% or the rate of withered sheath plants is 3%; During the panicle stage, key measures should be taken to prevent and control rice fields with high levels of residual insects from the previous generation, and pesticides should be applied during the peak period of egg hatching. Based on the development of local resistance to insecticides, it is recommended to choose appropriate pesticides such as methoxyimidacloprid, ethyl carbendazim, avilamycin, and imidacloprid.
(2) Rice planthopperThe key areas for prevention and control of brown planthopper and white backed planthopper are in the rice growing regions of southern China, southwestern China, and the middle and lower reaches of the Yangtze River, while the key areas for prevention and control of white backed planthopper and gray planthopper are in the Huang Huai rice growing region. The prevention and control indicators are 1000 insects per hundred clusters during the tillering stage and 1000-1500 insects per hundred clusters during the panicle stage. Attention should also be paid to the prevention and control of migration during the tillering stage in the rice growing regions of Southwest and South China. Based on the development of local planthopper resistance, it is recommended to choose appropriate pesticides such as trifluronil, imidacloprid, pyrethroids, and fipronil.
(3) Rice leaf roller.During the tillering stage of rice, it plays a compensatory role in plants and reduces the use of pesticides. The pesticide control index is 150 leaf tips per hundred clumps of rice during the tillering stage and 60 leaf tips per hundred clumps of rice after booting. During the peak period of egg hatching to young larvae, pesticides such as chlorfenapyr, indoxacarb, and polymyxin can be used.
(4) The three stem borer.During the early stage of rice heading, pesticides should be applied, with a focus on preventing and controlling rice fields with 40 egg blocks per acre, using the same method as the rice stem borer.
(5) Rice blast disease.Apply pesticides for the prevention and control of leaf blight when the disease spots first appear in the field. For fields with severe leaf blight, the second application can be made 7 days later; To prevent ear blight, apply pesticides in the early stage of piercing. If the climate is suitable for high temperature and humidity, apply pesticides for the second time during the full heading period. Protective agents can be selected from tricyclic azole, propiconazole, and miconazole/fluconazole; Therapeutic drugs such as pyrazole ether fungicide can be used.
(6) Sheath blightWhen the disease cluster rate reaches 20% from the late tillering stage to the booting stage, and in combination with the early heading stage, pesticides such as fluconazole, hexanol, miconazole, and thiacloprid are used to protect the ear.
(7) Rice blast disease and ear rot disease.7-10 days before the rice break (when 10% of the rice sword leaf pillow is level with the second leaf pillow), apply pesticides for prevention. In case of rainy weather, apply pesticides for the second time every 7 days. The selected drugs include fluazithromycin hydroxylamine, benzothiazole propiconazole, oxime bacteria tebuconazole, etc.
(8) Liquefaction disease.When symptoms appear in the seedling field, the seedling bed leaf surface shall be spray for prevention and control. Medications such as oxytetracycline can be used.
(9) Bacterial diseasesIn response to bacterial diseases such as bacterial leaf blight, on the basis of seed treatment and transplanting with pesticides, pesticides should be applied immediately for prevention and control when disease centers appear in the field. Pesticide shall be applied before and after typhoon and rainstorm in the severe area. The drugs used include zinc thiazole and thiamethoxam.
(10) Rice virus disease.For the common occurrence of black stripe dwarf disease in southern rice, systemic absorption is adopted in the southern and southwestern regions of ChinainsecticideMixing seeds and transplanting with pesticides, in spring (April May), move to rice areas where the virus carrying rate of white backed planthopper is greater than 1% or the disease rate of southern rice black stripe dwarf disease is greater than 3% in the middle and late stages of early rice. Prevention and control are needed during the seedling stage and early tillering stage of middle and late rice. Select systemic and long-lasting insecticides to prevent and control the white backed planthopper, combined with antiviral agents such as chlorpyrifos and kanamycin. For stripe leaf blight and black stripe dwarf disease, pesticides should be applied from the seedling stage to the early tillering stage to prevent and control the gray planthopper. The use of pesticides should refer to the southern rice black stripe dwarf disease.
(11) Fu Shou Luo.On the basis of taking measures such as raising ducks for hunting in rice fields and physically blocking water channels, when the snail density reaches 1-2 heads/square meter during the rice seedling stage and 3-4 heads/square meter during the tillering stage, pesticides such as acetaldehyde and ethanolamine salt can be used. It can also be combined with attractants, mixed with tea bran or hydrated lime, and sprayed for prevention and control.
4、 Precautions
（1） Priority should be given to using biological control, and biological pesticides should be applied appropriately in advance to ensure efficacy.
（2） During the epidemic period of bacterial diseases such as white leaf blight, it is advisable to increase the flight altitude of unmanned aerial vehicles for crop protection appropriately to reduce the occurrence of wounds caused by leaf friction and bacterial infection.
（3） Rice duck, rice shrimp, rice fish, rice crab and other breeding areas, as well as mulberry and silkworm breeding areas and their adjacent areas, should carefully select pesticides. After pesticide application, the field water should not be directly discharged into fish ponds and other breeding areas to avoid affecting the breeding.
（4） During the tillering stage of rice, it is advisable to avoid the use of emamectin benzoate and avermectin to reduce the risk of inducing rice planthopper proliferation; Be cautious with triazole fungicides during the heading stage.
（5） According to the results of drug resistance monitoring, the use of highly resistant pesticides such as chlorfenapyr, avermectin, and imidacloprid should be stopped in rice areas where resistance has developed, such as the rice stem borer, rice planthopper, and rice leaf roller. Instead, pesticides should be alternately used to delay the development of drug resistance.
