问题:填空题黄瓜的生育周期大致分为发芽期、幼苗期、()和()。...
Saturday, August 26, 2023
问题:问答题植物病害发生应具备哪些基本因素,这些因素是如何导致植物生病的?...
Wednesday, November 1, 2023
Thursday, September 22, 2022
Saturday, September 17, 2022
问题:单选题被子植物的各种分类方法中,最重要的方法是:()A 细胞学的方法B 形态学的方法C 解剖学的方法D 植物化学的方法...
Thursday, February 29, 2024
问题:设施果树栽培常用的控制树冠的方法有起垄栽培、容器限根、垫根栽培、根系修剪、应用生长调节剂和()。...
Thursday, September 22, 2022
问题:作物叶片的光合作用对根系吸收养分有很大的影响,但主要影响()。...
Wednesday, September 21, 2022
问题:问答题什么是顶端优势?其在农业生产上如何利用的?举例说明。...
Wednesday, June 14, 2023
Sunday, September 18, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 14, 2022
Friday, September 16, 2022
问题:下午4:30采收的月季切花比上午8:00采收的寿命短。...
Friday, September 16, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 14, 2022
问题:土壤养分供给的强度指标是(),土壤养分供给的容量指标是()。...
Saturday, September 17, 2022
问题:填空题番茄果实成热大体分为4个时期、即绿熟期、成熟期、转色期和()。...
Thursday, January 25, 2024