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小麦赤霉病和蚜虫是影响小麦产量的主要病虫害之一,虽然从苗期至扬花期均可发生,但以抽穗扬花期病害发生最重,损失最大。赤霉病它主要侵害正在扬花灌浆的麦穗,造成麦粒干瘪,严重时全株干腐;麦蚜在小穗间隙里刺吸汁液,以致麦粒的千粒重降低,影响产量和品质。合川县利泽乡11村4组的农民,近年来针对这一病虫发生规律,在农技人员的指导下,小麦赤霉病掌握在抽穗扬花期,温度在15℃左右,阴雨日连续三天以上,要施药防治。小麦蚜虫在抽穗
Wheat scab and aphid are one of the main pests and diseases affecting wheat yield. Although they occur from the seedling stage to the flowering stage, the disease is most serious and the loss is the largest at heading and flowering stage. Fusarium head blight it is mainly infested wheat is inflorescence, resulting in shriveled wheat, severe whole plant dry rot; wheat aphid sucking in the spikelet juice, resulting in reduced grain weight 1000, affecting yield and quality. In Hechuan County, Li Zexiang 11 village 4 groups of peasants, in recent years for the occurrence of pests and diseases, under the guidance of agricultural technicians, wheat scab belongs to the heading and flowering period, the temperature at about 15 ℃, rainy day for three consecutive Days or more, to pesticide control. Wheat aphids are heading