Pixian County began to inspect rice bacterial streak disease in the early 1990s and was basically extinct after many years of governance. In the past few years, due to the liberalization of the seed market and the introduction of pathogenic provenances, the disease has been revived in some local townships and has once again become one of the major diseases of rice. In particular, since 2005, the main cultivated rice varieties have gradually been replaced by two-line hybrid japonica rice such as Yangliangyou 6, Xinliangyou 6, Liangyou 6326, and Fengliangyou. These varieties are susceptible bacteria. The occurrence of bacterial leaf streak disease in the same year caused an area of ​​5,000 mu of bacterial leaf streak, and the situation in the following years has been increasing year by year. According to statistical data, in 2006, the area of ​​rice bacterial streak was increased to 20,000 mu, and in 2007 it was further expanded to 50,000 mu. In 2008, the agricultural sector promoted pesticide soaking and early prevention in advance. But still up to 8,000 acres.
Considering that rice varieties are still mostly susceptible, in order to prevent bacterial streak disease from continuing to reoccur locally this year, current measures should be taken to prevent the occurrence of bacterial streak disease during the rice breeding period, focusing on four key links. One is soaking seed with pesticides. The soaking agent is preferably made of strong chlorine, which can kill the fungi and bacteria attached to the seed and reduce the occurrence of bacterial streak. At the same time, it also has diseases such as bacterial blight, bakanae disease, and rice blast disease at the seedling stage. Certainly a cure. The rice seeds were soaked in clean water for 12 hours, then they were soaked in 300 times liquid of strong chlorine extract for 12 hours, rinsed with water and primed. The second is prevention and treatment at the seedling stage. In areas where bacterial leaf streak occurred in the previous two years, after rice seedlings were planted at the heart stage of two leaves in the two-year period, the use of Bacillus subtilis (36% trichloroisocyanuric acid wettable powder), 60 g of water and 30 kg of water was sprayed. Spray again every 5-7 days. The third is the adult stage of multiple drug use to control the occurrence and expansion of the disease. The old wards and old sick fields began to use the medicine from the delivery period, and the new sick fields were treated with the disease. The net dose of water was sprayed with 60 grams of germs per acre and sprayed 3-4 times. Fourth, late processing. After the rice matures, the onset of the crop should be covered by a single crop, the straw must be taken out of the field, the rice must be stored separately, and the grain shells should be destroyed in a centralized manner.
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