Monday, September 12, 2022
Friday, September 16, 2022
Saturday, April 29, 2023
Monday, September 12, 2022
根据土壤调查任务来确定制图比例尺,为完成实验地规划设计可选用()...
Friday, September 16, 2022
Friday, September 16, 2022
可以增大受光面积、提高土温、排除渍水、松土通气的耕作措施为()。A、耕翻B、镇压C、垄作D、地面覆盖...
Friday, April 14, 2023
从刚刚切断的南瓜茎基部的伤口处,可以看到流出的汁液,这种现象叫吐...
Friday, September 16, 2022
未形成液泡的细胞,靠()作用吸水;形成液泡的细胞主要靠()作用吸水。...
Monday, March 18, 2024
辽宁的小麦引种到河南,应引()品种。A、早熟品种B、晚熟品种C、中晚熟品种...
Tuesday, January 2, 2024
光合作用产物与光质等有关,红光下植物合成的()较多,蓝光下合成的...
Thursday, September 15, 2022
生长期短的作物适宜沙土上种植,早发苗,早收获,不致后期脱肥。...
Monday, February 6, 2023
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Monday, September 12, 2022
什么是顶端生长优势?试述顶端生长优势在农业生产上的应用。...
Thursday, October 19, 2023
Monday, September 12, 2022
不同植物感受春化的时期不同,小麦以()的幼苗发生春化作用最快,甘...
Monday, September 12, 2022
Friday, September 16, 2022
Monday, December 5, 2022
乙烯的结构式是(),它是一种气体激素,能起催熟作用,称(),在瓜类蔬菜上可促进花的形成,又称()。...
Friday, April 14, 2023