Friday, September 16, 2022
Friday, September 16, 2022
问题:作物吸收的氮素如果超过其代谢消耗,则以()形式存于体内。...
Thursday, September 15, 2022
Friday, September 16, 2022
Thursday, September 15, 2022
Thursday, January 11, 2024
问题:土壤耕翻的方式,根据土壤耕作中的耕翻强度不同,可将其分为()...
Thursday, September 15, 2022
问题:土壤环境保护与污染控制工作中我们可以采取以下措施...
Thursday, January 11, 2024
Thursday, September 15, 2022
Saturday, June 24, 2023
Monday, September 12, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Thursday, September 15, 2022
问题:简述根系分泌物和根际微生物对土壤养分有效性的影响...
Friday, September 16, 2022
Friday, September 16, 2022
问题:试述植物通过哪些适应性机制来应答对环境养分缺乏的胁迫?...
Friday, September 16, 2022
Friday, September 16, 2022
Thursday, September 15, 2022
问题:施肥量的确定方法包括地力分级法、()、地力差减法、肥料效应函数法...
Monday, September 12, 2022