Thursday, September 15, 2022
Wednesday, September 27, 2023
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, January 28, 2024
问题:病害流行主要受哪些因素的影响?()A、气候、栽培条件、菌源数量、品种抗性B、气候、菌源数量、品种抗性C、气候、栽培条件、菌源数量D、栽培条件、菌源数量、品种抗性
Thursday, September 15, 2022
Friday, September 16, 2022
问题:谷蠹隶属于()目()科,在我国主要以()地区发生危害严重。
Thursday, September 15, 2022
Thursday, September 15, 2022
Friday, September 16, 2022
Wednesday, September 27, 2023
Thursday, September 15, 2022
Friday, September 16, 2022
问题:水稻纹枯病菌主要以菌核在土壤中越冬,也可以菌核或菌丝在病稻草、田边杂草上越冬。()
Thursday, September 15, 2022
Saturday, December 31, 2022
Thursday, September 15, 2022
问题:玉米大小斑病的无性世代属于()亚门。A、子囊菌B、鞭毛菌C、担子菌D、半知菌
Wednesday, September 27, 2023
Monday, September 12, 2022
问题:从综合防治的角度论述怎样才能防止或减少植物病虫害的发生。
Friday, September 16, 2022
Monday, November 6, 2023