Research Progress on the Disease Regulation and Control Techniques of Rice Seedling Blight
Rice is one of the main food crops in the world. With the popularization of dry-raising technology of rice,the occurrence of rice seedling blight is very serious.Rice seedling blight has become a destructive disease with high incidence in rice seedling field,which greatly hinders the development of rice industry in our country and poses a serious threat to the food security of our country.It is very important to un-derstand its occurrence regularity and integrated control technology for effectively controlling rice damping-off and ensuring our country's grain safety production.This paper introduced the main pathogen,symptom and occurrence regularity of rice seedling blight.The occurrence factors of rice seedling blight were expounded from the aspects of pathogen accumulation,low temperature,soil moisture,air relative humidity,seedling quality and management of seedling bed.The agricultural control measures of rice seedling blight were introduced from the aspects of controlling sowing density,cultivating strong seedlings and strengthening field management.The main chemical control measures were introduced from seed treatment,seedling bed disinfection and chemical control.It is suggested that the control of rice seedling blight should be based on agricultural control measures,including rational selection of rice varieties,control of seedling raising and scientific management,and the chemical control methods,including seed treatment,seedling bed disinfection and pesticide spraying. The comprehensive prevention and control techniques should based on agricultural control and chemical control to prevent the development of rice diseases and ensure the safety of rice production in our country.
万方数据
维普
