汝州市位于河南中南部北汝河两岸浅山丘陵区，全市小麦播种面积６０万亩，平均每年小麦病虫发生面积１６０多万亩次，化防面积１３０多万亩次，对保卫小麦丰收起到了重要作用。一、发生动态与对策１．发生动态：８０年代以来，农业生产技术的发展，麦田生态环境的变化，小... Ruzhou City is located in central and southern Henan North Ru River on the shallow hills, the city sown area of ​​600000 acres of wheat, pest and disease on the average annual area of ​​more than 160 million mu of times, the area of ​​more than 1300000 acres of times, to defend the wheat harvest has played Important role. First, the occurrence of dynamic and countermeasures 1. Occurred dynamic: since the 1980s, the development of agricultural production technology, changes in the wheat field environment, small ...