Monday, April 29, 2024
Thursday, December 7, 2023
问题:以下哪种害虫的成虫具多型现象?()A、袋蛾B、舞毒蛾C、小地老虎D、家白蚁
Monday, January 29, 2024
Monday, April 29, 2024
Tuesday, December 13, 2022
Sunday, April 7, 2024
Monday, April 29, 2024
Sunday, June 18, 2023
问题:1%石灰半量式波尔多液,其中蓝矾、生石灰、水的用量分别为()。A、1∶2∶100B、2∶1∶100C、1∶0.5∶100D、0.5∶1∶100
Monday, January 29, 2024
Monday, November 20, 2023
问题:关于月季白粉病不正确的叙述是()A、为世界性病害,我国各地均有发生B、感病株叶片呈现白粉病斑C、高温多湿环境可以预防发病D、感病严重时引起早落叶、花蕾畸形等
Sunday, February 18, 2024
Wednesday, February 7, 2024
Monday, April 29, 2024
Monday, April 29, 2024
Sunday, September 11, 2022
Monday, April 29, 2024
问题:柑橘溃疡病通过()等方式进行传播。A、嫁接B、风雨C、昆虫D、枝叶接触
Monday, April 29, 2024
问题:以下哪种病害的病原是丝核菌?()A、仙人掌茎腐病B、菊花立枯病C、月季黑斑病D、水仙大褐斑病
Monday, April 29, 2024
Sunday, February 18, 2024
问题:若在植物被害部位上出现各种色泽的霉状物,该植物的病原应该是()。A、细菌B、病毒C、真菌D、线虫
Sunday, April 7, 2024