Monday, September 12, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
离赤道越近的地区,则月平均最高温度与最低温度的差异会()。...
Monday, September 12, 2022
Thursday, September 15, 2022
()中国设施园艺,出现了第二次发展高峰。塑料棚总面积已达到()h...
Thursday, September 15, 2022
中棚一般跨度在()m。一般跨度为6m时,以高度()m,肩高()m...
Thursday, September 15, 2022
Monday, March 11, 2024
观赏园艺植物按生态学分类怎样分的?各举出观赏植物2-3种。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
温室建设项目基本预备费为温室工程直接费的(),一般大型工程取()...
Thursday, September 15, 2022
完全风障高为(),并夹附高()左右的披风,披风较厚。春季防风的有...
Thursday, September 15, 2022
Thursday, September 15, 2022
一般施肥不是100%的被植物利用,而是一部分,N素化肥吸收率为(...
Thursday, September 15, 2022
不论是长日照还是短日照草花,都要求光照充足,这样开花便会加速。...
Friday, December 30, 2022
Thursday, September 15, 2022
长纤维无纺布比短纤维无纺布的使用寿命()。A、长B、短C、相当D、不一定...
Friday, December 30, 2022
Thursday, September 15, 2022
Wednesday, April 3, 2024