Monday, September 12, 2022
大多数植物不能在pH值低于3.5和高于()的环境下生长。...
Friday, September 16, 2022
Monday, September 12, 2022
Friday, September 16, 2022
植物在生长旺期,对氮肥的需要量大,而在开花结果期对磷、钾的需要量...
Friday, September 16, 2022
大部分多年生草花进行嫩枝扦插时,多采用带有顶芽的枝条的前端作扦插...
Tuesday, September 13, 2022
Monday, September 12, 2022
酸性土植物是指最适宜在酸性土壤上生长的植物。下列植物中属酸性土植...
Monday, September 12, 2022
Friday, September 16, 2022
Wednesday, November 1, 2023
Tuesday, September 13, 2022
Monday, September 12, 2022
鸢尾的花结构很特殊,没有花萼和花瓣,通常具有3枚:“垂瓣”和3枚...
Friday, September 16, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Tuesday, September 13, 2022
城市改造旧城区时,绿地面积(含公共绿地和单位附属绿地),应不低于...
Friday, September 16, 2022
Friday, September 16, 2022
要鉴定一种不认识的植物,如果不了解其隶属何科、何属、何种,则应先...
Friday, September 16, 2022
Friday, September 16, 2022