Thursday, December 14, 2023
Saturday, June 17, 2023
Wednesday, September 14, 2022
问题:松(苗)落针病菌与松赤落针病菌的主要区别是子囊孢子的形态不同,前者()形,后者则为长梭形至圆柱 形。
Wednesday, November 29, 2023
Thursday, November 9, 2023
Monday, September 12, 2022
Wednesday, April 10, 2024
Thursday, September 22, 2022
问题:引起苹果腐烂病的病菌的分生孢子主要靠()和()传播,从死组织()、()和()等侵入。
Friday, September 16, 2022
Friday, September 16, 2022
Saturday, March 4, 2023
Sunday, September 11, 2022
问题:病原物越冬越夏的场所有田间病株、()、土壤及粪肥、()、生物介体、()及贮藏窖等。
Wednesday, October 4, 2023
Thursday, May 25, 2023
问题:昆虫各种内脏及生殖系统均着生在腹腔内。腹部是()。A、新陈代谢和繁殖的中心B、运动中心C、感觉中心D、神经中心
Wednesday, February 15, 2023
Thursday, September 22, 2022
Tuesday, January 2, 2024
问题:简述半子囊菌(Taphrinomycetes)、核菌(Sordariomycetes)、腔菌(Dothideomycetes)和盘菌子囊菌(Leotiomycetes)的鉴别特征。
Sunday, February 26, 2023
Friday, February 23, 2024
Wednesday, June 21, 2023