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玉米穗腐病和粒腐病的发生与气候和品种有极大的关系,其为害程度有轻有重,在特殊年份对春玉米的为害程度也可能是毁灭性的。本文以2011年陕西省宜君县发生的大面积穗腐病和粒腐病为例阐明其为害性和为害症状。2011年,我县春播玉米区发生大范围的穗腐病和粒腐病,全县受灾面积达到1.3万hm2,受灾植株一般在30%左右,最高的达到60%以上,对于玉米主产区的我县极大地影响到农民的增产增收。2011年,由于玉米生长前期的高温干旱和生长后期的阴雨连绵和低温、多湿、寡照,以及同时发生的风雨天气和雨后多雾不晴的
The occurrence of ear rots and rot rots in corn has a great relationship with climatic and species development. The degree of damage is mild and severe, and the damage to spring corn in special years may also be devastating. In this paper, the case of large-area ear rot and grain rot occurred in Yijun County of Shaanxi Province in 2011 was illustrated to be harmful and harmful. In 2011, there was a wide range of ear rots and rot rots in spring sowing maize area in our county. The affected area of the county reached 13,000 hm2. The affected plants were generally about 30% and the highest reached 60% or more. For the main corn producing areas My county greatly affected the increase of farmers income. In 2011, due to the high temperature and drought in the early stage of maize growth and the rainy and humid, low temperature and humidity in the late growth period, as well as the co-occurrence of stormy weather and foggy weather after rain