近年来随着耕作制度和品种的改革,小麦的播种期被普遍提早7——10天,可就在这段时间——即十月底十一月初,气温在摄氏20左右,这正适合土壤里一种纹枯病菌的迅速蔓延,它们悄悄地侵袭小麦的幼芽有的小麦叶芽还未出土就夭折了越冬前后,被害的小麦一般在叶鞘上留下褐色病斑。这些病菌不仅危害植株一的叶鞘,同时也浸害了茎杆基部。这样麦杆容易折断,乃至倒伏枯死:有些小麦植株,虽然能够抽穗,但抽出来的却都是瘪穗,以致造成了小麦大幅度减产。针对这一病菌的严重患害。江苏省农科院植保所的科研人员,通过几年科学实验,研究总结出一套行之有效的 In recent years, with the reform of the farming system and varieties, the sowing period of wheat is generally advanced by 7-10 days, but during this time, that is, at the beginning of October and the beginning of November, the temperature is around 20 ° C, which is suitable for soil A rapid spread of Rhizoctonia solani, they secretly attack the wheat sprouts Some wheat sprouts have died before and after the winter has been unearthed before and after the winter, the victim of the wheat leaves in general leaves brown lesions. These germs not only endanger the leaf sheath of plant one, but also dip the stem base. This wheat straw easily broken, and even lodging dead: Some wheat plants, although capable of heading, but they are out of shriveled panicles, resulting in a substantial wheat yield. For this serious germs of the disease. Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences researchers, through a few years of scientific experiments, studies concluded that a well-established