海拔高度上升100m的地势效应,与纬度北移1°的地理效应相当。...
Friday, June 9, 2023
Tuesday, July 25, 2023
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Monday, September 12, 2022
苗木或树木掘起或搬运后不能及时种植,为了保护根系维持生命活动而采取的()期或临时将根系埋于湿土中的措施称为()...
Monday, May 6, 2024
Friday, July 14, 2023
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扦插繁殖中的硬枝扦插多在()期进行,嫩枝扦插多在()期进行。...
Wednesday, May 10, 2023
Saturday, May 18, 2024
适合于造形类树种是()A、海桐B、黄杨C、火棘D、五针松...
Wednesday, March 6, 2024
Saturday, July 1, 2023
Saturday, May 13, 2023
为保持花果丰盛壮年树的花芽分化能力,应增施P、K肥、调节花果量。...
Tuesday, July 25, 2023
屋顶绿化中树种选择注意要点是什么?列举小乔木,灌木,攀缘植物各五种。...
Tuesday, December 13, 2022
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Wednesday, March 6, 2024
易流失、易挥发的速效肥或施后被土壤固定的肥料,如碳酸氢氨,过磷酸钙等宜在树木()施入。施入深度应在根系()内。...
Wednesday, March 6, 2024
在江苏地区适宜园林绿化的木本地被植物是()A、铺地柏B、络石C、八角金盘D、金叶女贞...
Monday, January 16, 2023