Yongsheng Chengguan Dam cultivates more than 1000 hectares of rice all year round. For many years, Lijing 7 has been used as a main plant variety. Severe stripe disease has occurred seriously, which has seriously affected local rice production. Since 2004, local agricultural technology departments have started to pay attention to this disease. After years of experiments, they have finally found out a set of effective prevention and control methods.
1. Symptoms of diseased disease The diseased leaves exhibit intermittent yellow-green or yellow-white short streaks along the leaf veins, and then become even wider faded streak spots, making the leaves half or most yellow and white. Slaughter of the diseased plants is generally reduced. Plants with early onset of disease die prematurely and are not susceptible to heading.
2, the incidence characteristics of this disease is a virus, Laodelphaxella is the main media.
3, prevention measures
3.1. Do a good job of prevention and control of SBPH and completely eradicate the vector pests of the infected seedlings. Putian Zhongmu uses 10% imidacloprid WP 30g or 40% Dimethoate EC 100g Duixing 50kg spray twice, once every 7 days, eliminates SBPH.
3.2. Cultivation of disease-resistant and disease-resistant varieties such as 16, 18, 19, 20, and Lijing No. 8 of Fenghuang, rational fertilization, application of P and K fertilizers, and enhancement of rice disease resistance.
3.3. Pull out the central diseased plant: When the diseased plant begins to appear, remove it and destroy it in time to remove the secondary source of the disease.
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