Sunday, August 20, 2023
Saturday, September 9, 2023
问题:油菜种子中主要有毒物质是()。A、芥子甙B、单宁C、植物盐D、植物碱
Friday, March 22, 2024
Monday, January 2, 2023
Thursday, September 15, 2022
Sunday, October 9, 2022
问题:由天“三系”杂交稻不育系与保持系是同型系,因此,父母本之间一般不需进行错期播种。
Tuesday, April 30, 2024
问题:水稻光温敏核不育系与三系不育系的主要区别()。A、包颈B、在一定条件下能自交结实繁殖自身C、分蘖力强D、开花分散
Friday, March 22, 2024
Thursday, November 2, 2023
Thursday, September 15, 2022
Sunday, May 7, 2023
Thursday, October 5, 2023
Tuesday, July 11, 2023
问题:制种田父母本行向一般要与开花期的风向垂直或成一定角度。
Thursday, September 15, 2022
Tuesday, April 30, 2024
Thursday, September 15, 2022
Sunday, May 7, 2023
Monday, April 22, 2024
Sunday, May 7, 2023
问题:一般水稻可到海南岛()来加速种子生产进程。A、春繁B、夏繁C、秋繁D、冬繁
Thursday, September 15, 2022