Lodging fields to pay attention to the control of sheath blight and rice planthoppers
On September 9th, Han Zhongjie from Yuelai Town, Leiyang County, came to the telephone to report that after a heavy rain in the afternoon on the 8th, some high-yielding hybrid rice plants in the local area fell to the ground. He asked whether or not to manage the lodging of rice. It is understood that the rice in the undisturbed plots was heading in late August and was soon filled with grain.
In the late stage of rice growth, lodging occurs when the grouting is basically completed. Prompt handling of the ribs in a timely manner is conducive to ventilation and dehumidification, and prevents the loss of grain germination and mildew. Rice in the early stage of grouting, after lodging and lodging, will cause serious damage to the rice plant. The infiltration of rice leaves is also not conducive to the development of photosynthesis, but it is often not worth the candle. Rice, which is in the middle of grouting, shouldn't be put into a proper place after lodging, and can be allowed to fall into the field. If it is properly managed, it can also achieve a certain amount of production.
After the lodging of rice, poor ventilation and light transmission, high humidity, sheath blight, and rice planthoppers are aggravated. The trenches in the fields should be cleared in time and the water in the fields should be drained as soon as possible. With a view to formulating a drug line. Later, as long as the soil is not very dry, do not apply water. Irrigation water should be irrigated, with the irrigation with the row.
This year, severe occurrence of sheath blight occurs in all parts of the province. The occurrence of rice planthoppers such as whitebacked planthoppers in Huaibei and other places is relatively heavy. Prevention and control of these diseases and insect pests should be strengthened after rice lodging. For sheath blight, it is recommended to use benzoyl cyproconazole (a mixture of benzopropiconazole and propiconazole, such as Ai Miao and Jiarun) with a broad spectrum of bactericidal effects. Jinggangmycin. For rice planthoppers, pymetrozine, nitenpyram, and its mixture with isoprocarb must be used.
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