CAJ | 학술논문

对贵州独山县感病水稻病害症状观察表明,受害水稻植株矮化,比健壮植株矮1/3～1/2左右,受害株心叶褪绿呈淡黄色或黄白色且严重扭曲畸形.采用组织整体透明法和荧光染色法对感病植株观察鉴定,观察到病组织内有大量孢子囊,根据病害症状特征,病原菌孢子囊特征,可确定此水稻病害为霜霉病.气候条件与育秧方式是水稻霜霉病发病与传播的关键因素.在防治过程中应该把农业防治放在首位,同时辅以必要的药剂防治.
대귀주독산현감병수도병해증상관찰표명,수해수도식주왜화,비건장식주왜1/3～1/2좌우,수해주심협퇴록정담황색혹황백색차엄중뉴곡기형.채용조직정체투명법화형광염색법대감병식주관찰감정,관찰도병조직내유대량포자낭,근거병해증상특정,병원균포자낭특정,가학정차수도병해위상매병.기후조건여육앙방식시수도상매병발병여전파적관건인소.재방치과정중응해파농업방치방재수위,동시보이필요적약제방치.
Symptoms of infected rice in Dushan, Guizhou were examined, it showed that infected plants were stunt, 1/3～1/2 shorter than healthy plants, and spear leaves chlorosis to pale yellow or yellow-white, twisted and deformity. Tissue transparency and fluorescent stain methods were adopted to indentify the infected plants, big amount of sporangium were observed in infected tissues. And it was identified as downy mildew (Sclerophthora macrospora) according to the character of symptom and pathogen sporangium. Climatic and seedling raising patterns are the key factors for the occurrence and widespread of rice downy mildew. Agricultural control should be taken as priority, and chemical control could be combined to control the downy mildew.