For rice varieties with low or no resistance to large-scale stripe blight, the main point of disease prevention is to avoid or reduce the transmission of poisoning by SBPH. Before and after wheat harvest, it was the peak period of the generation of Laodelphax striatellus moving from wheat fields to rice paddies and transmitting viruses. With the production permitting, sowing can be postponed in due course, combined with the use of light cultivation measures such as seedling planting and fertilizer bed dry cultivation, the sowing date will be postponed to May 15 or even later, after which transplanting seedlings or seedlings will be used. Planting methods. This can effectively avoid the generation of Laodelphax striatellus to move to the peak of poisoning. In addition, as far as possible, choose the field where the amount of insects is small and the surrounding environment is clean. Dianchi Lake can be concentrically contiguous where conditions permit, so as to avoid isolation and breeding of one family at the wheat field. The soaking of pesticides has a certain control effect on the early stage of poisonous planthoppers in the seedbed. 0.8 grams of imidacloprid per kg of rice (active ingredient) can also be used to soak seed. Pharmaceutical soaking can also treat other insect pests such as barnyard grasshoppers. In the field of paddy field and early transplanting field, we should seize the timely control of SBPH in the peak period of SBPH. Rui Jin special is the first choice for the prevention of planthoppers, generally used per acre 5% Ruijin special 30 ml, can cure both the three Huayu, rice Thrips. The use of 10% imidacloprid per gram 40 grams or 5% efficient Da Gongchen WP 20 grams, also has a good control effect on the planthopper. Production should be organized in a large area of ​​the Spartina striata control system to achieve the best pest control effect. In the recurrence zone of rice stripe disease, resistance-resistant rice varieties should be selected as far as possible, such as Japonica rice No. 10, Yanjing No. 5, Yanjing No. 6, Yanjing No. 7, Yandao No. 8, Huaidao No. 6, and Huaihe. Youyou No.2, Xudao No.3, Zhendao No.88, Zhendao No.99, Yangcun No.9538, etc., or varieties of high quality japonica rice varieties Liangyou Peijiu and Shanyou 559, which are more resistant to japonica rice.
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