It is expected that the early rice pests and diseases in Jiangxi Province will be more serious in 2011, which is more important than 2010. It is recommended that all localities pay close attention to local pest information and weather forecasts, and grasp the favorable weather to carry out pest control. In particular, it is necessary to strengthen prevention and control during the three key periods of pre-planting, tillering and heading, and focus on rice control. Fly lice, rice blast and sheath blight ensure high quality and stable yield of early rice.
Forecast of climate trends in the main growing season of early rice in 2011 (April to June)
According to the prediction of the Jiangxi Provincial Climate Center, the temperature in the province was high in April-June 2011, and the rainfall was completely omitted. details as follows:
The average temperature is about 22 °C in the north; 22 to 23 °C in the middle; 23 to 24 °C in the south.
Rainfall: From April to June, the rainfall in the province is slightly less, with 700-750mm in northern Fujian (777mm for many years), 700-750mm in sputum (746mm for many years), and 650-700mm in southern Fujian (multi-year average) At 690mm), the rainfall is significantly less than in the same period in 2010.
Prediction of the occurrence trend of early rice pests and diseases in 2011
1. Rice planthopper: The southern rice area of ​​Ji'an is heavily biased, and other rice areas occur moderately, similar to last year. It is estimated that the area will be about 10 million mu.
2. Rice leaf roller: The first generation occurs lightly; the second generation occurs moderately, and the migration into the main descending area occurs more heavily than last year. It is estimated that the area will be around 8 million mu.
3. Chilo suppressalis: The first generation occurs in a medium-sized manner, and local partial weight occurs; the estimated area is about 8.5 million mu. The second generation occurred lightly, and the estimated area is about 2 million mu.
4. Sanhua 螟: The first generation occurs lightly, and the second generation occurs lightly. It is estimated that the area will be about 1 million mu.
5. Rice blast: The leaf mites occur moderately, and the ear mites occur heavily, and the local stagnation occurs, which is more important than last year. It is estimated that the area will be around 4 million mu.
6. Sheath blight: Heavier occurs, slightly lighter than last year. It is estimated that the area will be around 13 million mu.
Weather effects and pest control recommendations
According to the forecast of the weather and climate of the main growing season of early rice in Jiangxi Province and the occurrence trend of early rice pests and diseases, it is recommended that:
1. The main attack is two diseases. In 2011, early rice pest control should focus on rice planthopper, rice blast and sheath blight, and control rice leaf roller and aphid according to local conditions.
2. Grasp the three key periods of scientific prevention and control. First, 2 to 3 days before the transplanting of early rice, the feeding agent is applied to prevent or reduce the occurrence of pests such as aphids and rice blasts in the tillering stage of the field; the second is to mix and nurse the ear to prevent the ear mites in the early stage of early rice breakage. , rice planthopper and sheath blight; the third is to control the first generation of stem borer and rice blast in the tillering period, and control the sheath blight and rice leaf roller in the late tillering to booting stage.
3. Grasp the favorable weather green prevention and control. Pay attention to the local weather forecast and agricultural weather forecast, avoid the application of pollution prevention and control during adverse weather periods such as rainfall and strong winds, and use green prevention and control pesticide reduction technology as much as possible to prevent food production safety and ecological environment safety.
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