(Summary description)In recent years, rice seed-borne diseases and seedling stage diseases and insects have occurred in a large number of species and severity, posing a threat to the safety of rice production. In particular, the incidence of rice bakanae disease is more serious in machine-transplanted rice and dry-fed transplantation (throwing) rice. The occurrence area of ​​dry tip nematode disease is also expanding. Diseases and insects such as rice blast and rice thrips are found in coastal and riverine parts. It is common in the area at the seedling stage, which poses a greater threat to rice seedlings and seedling growth. Seed medicament treatment has strong pertinence, low dosage, and long duration. It can play the role of "medicine and other diseases and insects" during the efficacy period, and realize the advancement of pest control and control, which can effectively control the pests and diseases in the seedling stage. It can also significantly reduce the pressure of pest control in the early and mid-stage of rice growth, reduce the amount of pesticide use and the loss of chemical liquid; some seed coating agents can also promote seedling packing in plastic trays, which is conducive to machine transplanting. All localities should attach great importance to rice seed treatment, pay close attention to publicity and service guidance, vigorously promote safe and efficient seed treatment technology, strive to increase the coverage of seed treatment, and lay a solid foundation for cultivating strong seedlings and ensuring high and stable rice yields.

1. Select high-quality rice seeds to lay a solid foundation for strong seedlings

It is necessary to select high-quality, disease-resistant seeds according to local conditions, select disease-free and robust rice seeds, dry them for 2-3 days before treatment with the medicament, and carry out winnowing, by removing impurities and inferiority, reducing the source of bacteria and increasing seed vigor, increasing the germination rate and germination. Potential. In recent years, bakanae disease, dry tip nematode disease, rice blast, bacterial leaf streak and other diseases have recurred in areas where the planting area of ​​highly susceptible varieties should be reduced to reduce the risk of disease occurrence and reduce the pressure on prevention and control.

2. Carry out medicament treatment correctly to improve the quality of seed medicament treatment

One is to choose the right kind of medicine. For bakanae disease, fenoxystrobin, fludioxonil, ethylicin, fludioxonil, pyridoxine, fluorocyclopyridine, fludioxonil, trifloxacin, isothiazamide, etc. can be selected. Seed soaking or dressing with medicaments such as nail cream and conazole. In view of the fact that bakanae pathogens in most areas of our province have developed a high level of resistance to prochloraz, soaking seeds with prochloraz should be stopped; Seed soaking with Shapidan and its compounding agent; For the mixed occurrence of bakanae disease and dry tip nematode disease, you can choose to soak or dress the seeds with medicament such as Etosan, Etosan, and Cyanoxystrobin. In the production, you can choose to use 25% cyanostrobin suspension 2000-3000 times liquid, or 17% pyridoxine·etiticin wettable powder 200-400 times liquid for seed soaking; or 62.5g/L methicone·fludioxonil suspension seed 300 ml of coating agent, add 1700 ml of water, and stir to coat 100 kg of rice seeds; or 250-500 ml of 12% methylpyridine metalaxyl suspension seed coating agent, dilute to 1-2 liters with water, and stir to coat 100 kg of rice seeds Kg; or 11% fluorine ring • pyrrolidone • fine nail seed treatment suspending agent 300-400 ml, dilute with water to 1.5-2.5 liters, and stir to coat 100 kg of rice seeds; or 24.1% trifloxacin • isothiamine seed treatment suspending agent 1500-2500 ml, dilute with water to 1.5-3 liters, and stir 100 kg of coated rice seeds; or 100-150 ml of 4.23% nail cream•Seconazole microemulsion, dilute with 1-3 times water, and stir to coat rice seeds 100 kilograms; for areas with heavy occurrence of thrips, you can soak or dress seeds with imidacloprid, thiamethoxam, clothianidin, etc. For thrips, use 100-300 ml of 30% thiamethoxam suspension seed coating agent, Add 1-2.5 liters of water to dilute and then stir and coat 100 kg of rice seeds; or first soak the rice seeds to accelerate germination to whiteness, and then 200-400 ml of 600 g/L imidacloprid suspension seed coating agent to dilute and coat 100 kg of rice seeds; In areas where bacterial streaks, bacterial leaf blight and other bacterial diseases occur, demonstrate the application of trichloroisocyanuric acid, chlorobromoisocyanuric acid soaking or thiazole zinc seed dressing; for rice blast recurrence areas and their susceptible varieties, apply 24.1 %Xixibacteria•Isothiamine seed treatment suspending agent 1500-2500ml, add water to dilute to 1.5-3 liters, stir and coat 100 kilograms of rice seeds.

The second is to improve the quality of seed trea

• Categories:Technical Services
• Time of issue:2021-03-17 18:12
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