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通过对36年的资料分析,河北省小麦病虫草害发生特点是种类多(50多种)、危害重(损失粮食10%左右);旧病虫害控制下去(如小麦锈病、黑穗病、线虫病、麦杆蝇),新的病虫就会出现(象麦蚜、吸浆虫、麦茎叶(虫甲))。因此,农业生态系的变化,会导致小麦病虫群体结构、种群数量、危害程度和品种的抗逆性的变化。从当前种植结构、耕作制度、栽培管理水平、气象予测、虫源、毒源、品种的抗病虫能力等进行综合分析:预测今后万至十年,小麦锈病、赤霉病,仍稳定在轻度流行,个别年份局部偏重,发生期偏晚;小麦丛矮病在冀中南冬麦区将趋于回升,冀北冬麦区轻度点片发
Through the analysis of 36 years of data, the occurrence of pests and weeds in wheat in Hebei Province is characterized by many types (more than 50 species) and heavy damage (about 10% of the loss of grain); the control of old pests and diseases (such as wheat rust, smut, nematode , Wheat stem flies), new pests will appear (like wheat aphid, midge, wheat stems and leaves (insects)). Therefore, the change of agroecosystem will lead to the change of wheat pest population structure, population quantity, degree of harm and variety resistance. From the current planting structure, tillage system, cultivation and management level, meteorological prediction, insect source, source of poison, pest resistance and other comprehensive analysis of the variety: predicting the next ten thousand to ten years, wheat rust, scab, still stable at Mild pandemic, partial year partial emphasis, occurrence late; wheat dwarf disease in winter in Hebei Jizhong area will tend to rebound, Hebei winter wheat area mild point piece