论文部分内容阅读
大豆病害已发现30余种,其中病原包括真菌、细菌、病毒和线虫等。按病害的发生部位可分为根部病害、叶部病害、籽粒病害、茎秆病害及全株病害等。其常见病害发生的原因有以下几方面。1、由于药剂拌种只能控制前期根部病害,目前尚未有满足农业生产需要的抗病品种,所以重迎茬严重是大豆根腐病和抱囊线虫病发生的主要原因。
Soybean diseases have been found more than 30 species, of which pathogens include fungi, bacteria, viruses and nematodes. According to the site of disease can be divided into root disease, leaf disease, grain disease, stalk disease and whole plant diseases. The common causes of diseases are the following aspects. 1, Because the seed dressing can only control the pre-root disease, there are not enough resistant varieties to meet the needs of agricultural production. Therefore, the serious replanted crop is the main reason for the occurrence of soybean root rot and cysticercosis.