Comprehensive Control Techniques of Main Diseases and Pests in Rice

The prevention and control of rice pests and diseases must follow the principle of “prevention-oriented, comprehensive prevention and management” plant protection work, firmly establish, “Public plant protection, green plant protection concept, with rice blast, bacterial blight as the main control object, implementation of” planting high-yield disease-resistant varieties The center promotes comprehensive prevention and control methods based on high-yield and disease-control cultivation, timely drug control and protection, strengthens disease monitoring and early-warning, extensively conducts technical training to timely guide farmers' prevention and control, and combines monitoring measures with emergency measures, and implements divisional control and classification guidance.

I. Planting high-yield and disease-resistant varieties must identify and monitor the resistance of rice varieties, timely compress and eliminate high-susceptibility varieties, and introduce and popularize disease-resistant varieties to avoid the loss of plant resistance and the high sensitivity of new varieties introduced. Rice blast causes serious illness. It is necessary to rationalize the distribution of species and strive to avoid the unilateralization of the same species of barrage and increase the variety of species.

Second, mixed hybrid rice varieties are mainly planted with dwarf hybrid rice varieties. The local high-grass pods are intercropping varieties, standardized mixed plants are planted, and the prevention and control of rice blast disease in perennial disease areas is better.

Third, health care and cultivation measures 1, dry bed nursery, cultivate strong, timely planting. 2, scientific management of fertilizer, rational dense planting. The combination of water and dry and wet, timely withdrawal of water and drying fields, promote the robust growth of rice plants and enhance disease resistance. Soil testing, formula fertilization, application of base fertilizer, early application of top dressing, clever application of panicle fertilizer, to avoid partial application of nitrogen fertilizer. Article planting, standardized planting, establish a reasonable group structure. 3, pastoral clean, reduce bacteria source. The diseased rice straw should be disposed of in time to reduce the initial infection source and reduce the occurrence of disease hazards.

Fourth, monitoring the condition of the disease and preventing the hazards of pesticides in rice have a process of happening. It is necessary to carry out the field, monitor the occurrence of diseases, and timely conduct chemical control. 1, Putian period control. Seed treatment: Rice seed borne bacteria is one of the primary sources of infection for rice diseases such as rice blast, rice bacterial leaf blight, rice strip disease, and rice bastard disease. Pre-planting rice seeds with strong chlorine, carbendazim, lime Water and other agents disinfect rice seeds to reduce the initial source of infestation. Spraying “Jiaofei”: 3 to 5 days before transplanting, once the occurrence of leafhoppers and planting seasons, spraying tricyclazole as a “send fertilizer” can delay the occurrence time of field leafhoppers and reduce the occurrence . Can also be used "tricyclazole + leaf cuming Ning" as "send marriage fat", the prevention and treatment of rice blast, bacterial blight in the old field wards spraying field is the key, usually before the application of a drug. 2. Control of Datian: A. Rice blast: The control of leafhoppers should be “inspected” once in 5-10 days after transplanting green leaves. It was found that leafhoppers timely sprayed tricyclazole, thioconazole, ketoxime, and rice indole and other agents. Controlling leafhoppers, panicle blast prevention must be at the late booting stage, based on the strength of the varieties as the basis for the combination of flood resistance and weather forecast during the panicle stage, leaf blast disease conditions and rice plants will grow in length and determine the key areas for prevention of panicle blast and field plots. In the booting stage (spiking phase) of rice, high-efficiency pesticides such as tricyclazole or thionidazole are sprayed on time and sprayed once every 7-10 days. Many years of prevention and treatment can effectively prevent panicle blast, and should be used as The "safeguard" measures for the prevention and control of rice blast are well established. B. Bacterial leaf blight of rice: Rice bacterial blight is sprayed at the early stage of disease, and usually it is applied once every 5-7 days. The drug is applied successively for 2-3 times. The drug is selected from chloroprene and streptomycin. Datian spraying should have “a little bit of a cure, and there is a piece of a cure” and timely spraying the blockage of the onset center. If the climate is favorable, general prevention and control of similar fields should be implemented to control the spread of the disease. C. Rhizoctonia solani: The agents include triadimefon and #Gammycin, which are used at the initial stage of disease. D. Rice smut: Through several tests, the surface 50% compound carbendazim suspension (carbendazim + Jinggangmycin) mu 100ml control effect 90%, 5 million unit Jinggangmycin powder mu use 27g defense The effect is about 85%, and it is only necessary to spray the stems and leaves once in the late booting stage (7-10 days before heading).

Fifth, implement quarantine compliance with the "Plant Quarantine Ordinance" and implement quarantine. Prevent the spread of quarantine and dangerous pests and diseases.

BEAUTY INSTRUMENT

JIANGMEN EASY TECHNOLOGY CO.,LTD , https://www.easylife-tech.com