问题:下列宜施用氯的作物有:()A、棉花B、麻类作物C、小麦D、甜菜
Thursday, September 15, 2022
Sunday, January 21, 2024
Thursday, February 15, 2024
问题:最小养分率的创立者是()A、道库恰耶夫B、米切利希C、李比希D、威廉斯
Thursday, February 15, 2024
Thursday, September 15, 2022
问题:()是多种肥料的物理混合体,尽管在混合体中可能发生某些化学反应。A、复混肥料B、复合肥料C、混合肥料D、有机肥料
Wednesday, October 4, 2023
Tuesday, April 16, 2024
Thursday, February 15, 2024
问题:氮的营养功能是()。A、蛋白质的重要组分B、核酸和核蛋白的成分C、叶绿素的组分元素D、许多酶的组分
Thursday, September 15, 2022
问题:果树枯顶病是缺什么元素。()A、CuB、MnC、ZnD、B
Thursday, September 15, 2022
Saturday, September 16, 2023
Thursday, February 15, 2024
Tuesday, August 22, 2023
Sunday, October 16, 2022
Sunday, January 21, 2024
Saturday, September 16, 2023
Friday, September 22, 2023
问题:测土配方施肥的具体内容,包含着“()”、“()”和“()”三个程序。
Thursday, February 15, 2024
Tuesday, October 18, 2022
Thursday, September 15, 2022