玉米心叶扭曲（Corn leaf distortion）.docVIP

玉米心叶扭曲（Corn leaf distortion） Causes and prevention measures of maize whorl distortion W, Donggang, Donggang, China Source and author: Donggang Agriculture Service Information Office release time: 2006-06-02 14:14, reading times: 761 Tang Chi Zhen Meng Ya Cun surnamed Qin farmers friends call the hotline to ask on the distortions of maize field there is what causes, what measures should be taken to control. Agricultural technology promotion center senior agronomist Wang Weiliang said, this phenomenon is a kind of physiological disorders, that is to say it is not harm caused by pathogens, but the corn itself in a period of growth stage and external adverse environmental factors. Corn leaves distorted to a certain period of time, will naturally let go, restitution. Therefore, the farmer friend does not need to use the medicament processing, so long as the normal management can. If the individual leaves a corn strain stage has not yet released, by the end of the twist of the knife or hand pinch off, this is conducive to the early resumption of normal maize plants. The symptoms are diverse and the risk of corn top rot is serious Top rot is a new disease of maize, which has occurred in Heilongjiang, Jilin, Liaoning, Gansu and Shandong provinces, and has become an increasing trend year by year, which is seriously harmful. At the beginning of July, Yan Zhuang village in Wuan city of Handan Ji Kuilin reflected in our province, local farmers near the heading of spring maize is abnormal, in the premise of the exclusion of other factors, preliminary analysis for maize top rot caused by. For this reason, the author specially sorted out the characteristics, characteristics and prevention methods of the disease for the reference of farmers friends. I. characteristics of occurrence. The pathogenic bacteria in the soil, plants, seeds, especially seeds can spread over long distances, the incidence of regional expansion; pathogenic bacteria and plants produce conidia can also spread