【摘 要】
：
根据1999年我省主要病虫的发生特点、越冬基数、秋季气象条件和历史资料等综合分析,对2000年主要病虫的发生趋势进行初步分析和预测,预计2000年病虫发生总的趋势为中等至中
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根据1999年我省主要病虫的发生特点、越冬基数、秋季气象条件和历史资料等综合分析,对2000年主要病虫的发生趋势进行初步分析和预测,预计2000年病虫发生总的趋势为中等至中等偏重发生,发生面积约1.2亿亩次左右。 1.大豆病虫预计大豆病虫害总的趋势为中等至中等偏重发生,发生面积约4000万亩。草地螟:1999年草地螟在我省发生面积3000多万亩,发生面积大,虫口密度高,虽然经全省全力防治,控制草地螟的危害,
According to the characteristics of main pests and diseases in our province in 1999, the base of overwintering, meteorological conditions in autumn and historical data, the trend of major pests and diseases in 2000 were analyzed and predicted. The general trend of occurrence of pests in 2000 is Moderate to moderate bias occurs, the occurrence of an area of about 1.2 million acre times. 1. Soybean diseases and insect pests It is estimated that the general trend of soybean pests and diseases is moderate to moderately biased, with an area of about 40 million mu. Meadow borer: Meadow borer in 1999 occurred in the province more than 3,000 acres of area, the occurrence of large area, population density, although the province’s full control, control of the dangers of Meadow Borer,
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