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1、大豆病虫:预计大豆虫害发生趋势为中等偏重发生,其中虫害重于病害,发生面积约4000万亩次。草地螟:1999年草地螟在全省发生面积3000多万亩,发生面积大,虫口密度高,虽经全力防治,控制草地螟的危害,但田间仍有大量草地螟残虫。预计2000年草地螟仍有发生的可能。大豆食心虫:中等偏重发生,发生面积800万亩。大豆蚜:中等偏重发生,发生面积500万亩。近几年大豆红蛛蜘、蓟马及一些食叶性害虫在各地发生也较重,应引起注意。大豆根部病害为中等发生。大豆灰斑病、菌核病、霜霉病等叶部病害预计将在局部低水平上发生。
1, soybean pests: the trend of soybean pests is expected to occur moderately heavier, pests heavier than the disease occurred, the occurrence of an area of about 40 million mu times. Meadow borer: In 1999, Meadow borer occurred in the province with an area of more than 30 million mu, with large area and high density of insect population. Despite the full control and control of the damage caused by Meadow Stem Borer, there were still a large number of Meadow Borer residues in the field. Meadow moth is still expected to occur in 2000. Soybean heart worms: Moderate weight occurs, the occurrence of an area of 800 mu. Soybean aphids: Moderately heavy occurs, the occurrence of an area of 5000000 acres. In recent years, soybean spider spider, thrips and some leafy pests also occur in various places, should pay attention. Soybean root disease occurs moderately. Soybean leaf spot disease, sclerotinia, downy mildew and other leaf disease is expected to occur in the local low level.