问题: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
Friday, June 9, 2023
问题:小麦的CO<sub>2</sub>饱和点约为()...
Monday, September 12, 2022
问题:树木青年期是树木花、果实尚未达到固有的标准性状,树木离心生长仍较快,此时应对其进行()A、加强水肥管理、B、合理整形修剪、C、更新复壮、D、促进种子形成...
Sunday, March 12, 2023
Tuesday, July 25, 2023
Wednesday, March 6, 2024
Tuesday, August 8, 2023
Friday, July 14, 2023
问题:顶端优势不太强的花灌木,但发枝力强,易形成丛状树冠,可修剪成球形、半球形的树种有()。A、桂花B、栀子花C、檵木D、海桐...
Wednesday, February 7, 2024
Wednesday, April 10, 2024
问题: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
Thursday, September 15, 2022
Monday, September 12, 2022
Monday, May 6, 2024
问题: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
Wednesday, April 10, 2024
问题: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
Saturday, July 1, 2023
问题:萌芽力、成枝力及愈伤能力弱的树种不耐修剪如(),应以维持自然树形...
Monday, September 12, 2022