根据近期全国各地病虫基数调查、气候条件以及寄主作物环境分析,预计1996年全国粮棉重大病虫为偏重发生趋势。麦蚜黄淮海麦区大部分穗蚜偏重或大发生,面积与近年相似。小麦条锈病黄淮海麦区目前未见发病,不具备大面积流行的条件,大部仍将中等偏轻发生,四川中 According to the recent survey of pest and disease base throughout the country, climatic conditions and the analysis of the host crop environment, it is estimated that the major pests and diseases of grain and cotton in 1996 are more prevalent. Most of the wheat aphids Huanghuaihai Mai area aphids mostly or large occurrence area similar to recent years. Wheat stripe rust Huanghuai Hai Mai area is currently no disease, do not have the conditions of large-scale epidemic, most will still be moderately light, Sichuan