1. Actively promote disease-resistant varieties
At present, the varieties that have been approved for promotion and cultivation in our province are: Jindan 43, Jindan 44, Jindan 48, Nongda 108, Nongda 84, Zeyu No. 2, Tuenyu 52, Qiangsheng No. 1, Zhongbei 410, Tongdan 36, Jingdan 958, Fuyou 1, etc. Strict control of the production and application of susceptible varieties can effectively prevent the outbreak of head smut.
2, appropriate sowing, promote early emergence, strong seedlings
According to climatic conditions, timely adjustment of the sowing date, avoiding blind early sowing, and shortening the infection period of the bacteria in the soil, can reduce the occurrence of diseases.
3. Promote seed coating agents with disease-resistance in serious wards
Use 2% Rickettsia WP to seed 0.2% of the seed weight, use black scutellariae, black worm bisect, Falkeng, etc. Seed coating agent: Seed 1:50 to coat the seed, the disease prevention effect can reach 80% the above.
4, the implementation of rotation down, remove the disease strain to reduce bacteria source
The implementation of rotation cropping is an effective measure to control the smut of corn silk, especially in diseased land plots, and at least two or one year rotation. In severe disease fields, it is necessary to plant rotation-resistant varieties. According to the typical symptoms of the diseased seedling stage, combined with the Ding Ding cultivating shovel in addition to the performance of dwarfing, internode shortening, dark green leaves, narrow, clustered, curved stems, slightly thicker base, more than the number of diseased seedlings and suspicious seedlings. At the same time, attention should be paid to the timely removal of field strains when the black powder is not removed, or to remove or burn the diseased ear.
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