Many years of practice have shown that: The chemical treatment of rice seeds is the only effective measure to control bastard disease, dry-needle nematode disease and other species-borne diseases, once the disease has no good pharmaceutical control. Rice bastard disease has been increasing in our district in recent years, especially in nursery machines and rice transplanting, and the incidence of transplanted rice is heavy. The number of diseased seedlings in a few serious diseases is as high as more than 50%, which seriously affects rice yield. To this end, Wang towns must keep in mind the lessons of previous years, increase propaganda, choose to soak seeds and pesticides on the road, and fully implement seed pesticide treatment before sowing, resolutely prevent dry seed sowing, and effectively control the disease-borne disease hazards.
First, drug treatment methods and time
1. Soaking seedlings with transplanting rice and throwing rice and other rice cultivation methods; Wuyunjing 24, Ningjing No. 5 and other varieties with high bacterial rates and heavy incidence must be soaked with pesticides. 25% cyanogenate suspension 2.5-3 g +6% killing Dan water agent 2-4 ml plus 7-8 kilograms of fresh water, stir, immerse rice seeds 4-5 kg, cover 48-60 hours light immersion.
2, seed dressing dry straight (sets) sowing seeds with dry seeds, sowing can not be promptly drowning after the use of pesticide seed dressing. 25% cyanoxime suspension 2.5 g + 35% imidacloprid suspension (Shiyue) 4 g plus 1 kg of clear water, mixed with 5 kg of rice, heap boring 1-2 hours until the liquid is soaked and sowed.
Second, the matters needing attention
1. Transplanting rice such as transplanting rice seedlings and dry seedlings, and susceptible rice varieties such as Wuyunjing 24 and Ningjing No. 5 must be soaked with 25% cyanoxime to ensure effective control.
2. Strictly control the time and concentration of seed treatment to prevent the effects of germination and disease control.
3, soaking must be used twice the dilution method, first with the liquid, and then into the seed. The length of soaking time is determined by the temperature at the time of soaking. When the temperature is high, the time can be appropriately shortened. When the temperature is low, the time is appropriately extended.
4. The seed treatment should be carried out at room temperature, and no heating measures should be taken. Do not rinse with water after treatment, so as not to reduce the efficacy.
5. Bacillus disease has produced strong resistance to prochloraz. It is recommended that the majority of farmers do not use dichlorm and solubilizing agents, and use 25% cyanoxime to soak or seed.
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