问题:常规地有机质分解快,肥力状况决定与投入和输出的平衡状态。...
Monday, September 18, 2023
Tuesday, December 6, 2022
Wednesday, February 14, 2024
问题:通常土壤水分多时,不利于微生物活动,有机质矿化率低,此时有利于有机质的()A、分解B、积累C、矿化D、腐殖化...
Sunday, January 7, 2024
问题:以下哪项不是氮的输出途径?()A、淋失B、挥发C、作物吸收D、微生物反硝化作用...
Friday, March 29, 2024
问题:耕作制度的历史演进经历了四种类型,即(),(),(),()。...
Friday, March 29, 2024
Wednesday, September 14, 2022
Wednesday, September 14, 2022
问题:农业生产的实质是利用绿色作物的光合作用,将太阳辐射能转化为化学能的过程。...
Saturday, April 29, 2023
Friday, June 9, 2023
Tuesday, October 17, 2023
问题:我国耕作制度改革的主要成就包括提高复种指数,发展多熟制;发展了适于机械化的耕作制度;进一步强化了养地制度等七个方面的内容。...
Sunday, December 10, 2023
问题:我国耕地生产潜力开发与提高年单产的主要途径是什么?...
Monday, September 12, 2022
Wednesday, September 14, 2022
问题:下列哪种作物是禾本科作物()A、小麦B、马铃薯C、大豆D、甘蔗...
Sunday, December 17, 2023
问题:下面作物哪个是C4作物:()A、木薯B、水稻C、玉米D、小麦...
Thursday, April 27, 2023
Monday, March 25, 2024
Thursday, February 1, 2024
Wednesday, September 14, 2022
问题:耕作制度的分区指标是指地理位置、地貌、水分条件、热量条件、作物类型和()。...
Tuesday, January 9, 2024