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一预测预报的种类根据预测时期的长短,有短期预测和长期预测之分。短期预测一般为10—30天左右,由这种预测结果所发出来的短期预报可以使生产领导部门和有关生产单位及时调配药械、安排劳力,消灭病虫害在有利时机,依靠这种预报可以防止病虫害扩大蔓延、避免人力、物力的浪费,保证防治效果;长期预报则是不确定的较长期的预报,一般是由头一年度的冬季或是当年的年初预测一下年度或是当年的病虫发生情况。依靠长期预报,结合参照历年病虫发生资料,可使防治
A forecast of the type of forecast based on the length of the forecast period, there is a short-term forecast and long-term forecast of the points. The short-term forecast is generally about 10-30 days. The short-term forecast issued by this forecast result can enable the production leading department and relevant production units to deploy the medical equipment in a timely manner, arrange the labor force and eliminate pests and diseases at a favorable time, and rely on this forecast to prevent pests and diseases The expansion of its spread will avoid the waste of human and material resources and ensure the effectiveness of its prevention and treatment. Long-term forecasts are uncertain long-term forecasts. The forecast is usually from the first winter of the year or the beginning of the year to the forecast of pests and diseases in the year or the current year. Rely on long-term forecasts, combined with reference pest occurrence data over the calendar year, can prevent and cure