摘要
宁夏引黄灌区自80年代中期以来,由于耕作制度的改变,又有灌溉条件,构成了有利于小麦赤霉病发生和流行的农田生态环境,发病面积逐年扩大,发病程度不断加重。作者在调查研究基础上,通过对赤霉病流行因素的分析,认为作物品种、生育期以及农田小气候等相对变化不大,菌量是影响此病流行的主导因素。
Since 80s,the infected area by head blight of wheat (Fusarium gramin-earum,Schw,) has been developing and the degree of development increasing gradually year after year,because of the change of cuhivating system and the availabe irrigation condition, which formed a farmland- ecologic environmet there was adventageous to outbreack of the disease. The author was based on the investigation, through analysis of factors contributing to the disease epidmics of wheat, indicated that quantity of the pathogenetic fungi was the key factor that influenced the disease epidmic, because other factors, for example the cultivars of crop, growing period, microclimate in farmland and so on,changed relatively stable.
出处
《农业科学研究》
1993年第3期10-15,共6页
Journal of Agricultural Sciences
关键词
小麦赤霉病
流行因素
带菌指数
春小麦
head blight of wheat/wheat scab epidemic factor index bearing the pathogenic fungi spring wheat
