Saturday, January 13, 2024
Wednesday, September 14, 2022
Wednesday, September 14, 2022
多数树种发芽最适宜温度在()之间。A、0-5℃B、5-10℃C、10-15℃D、20-30℃...
Thursday, January 4, 2024
Monday, February 12, 2024
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Sunday, September 11, 2022
Friday, January 12, 2024
Monday, September 12, 2022
Wednesday, September 14, 2022
Wednesday, November 22, 2023
苗木移植的意义有()。A、增加侧根和须根的生长B、促进苗木高生长C、增长苗木的茎根比值D、扩大了单株营养面积E、培育良好的干形和冠形...
Monday, December 4, 2023
Wednesday, September 14, 2022
千粒重的测定通常采用()测定,这也是“规程”规定的方法。种子数量...
Wednesday, September 14, 2022
苗木的直径生长高峰与高生长高峰是()进行的。A、同时B、交错C、先有直径生长高峰D、先有高生长高峰...
Sunday, September 10, 2023
种子的成熟包括两个过程,一般先经过()而后进入(),但也有少数树种种子例外。...
Friday, March 24, 2023
Saturday, March 16, 2024
北方干旱地区和盐碱土地区均适于()耕,但砂土地苗圃适于()耕。...
Sunday, March 3, 2024
混合样品的重量一般不能少于送检样品的()倍。A、5B、10C、15D、20...
Sunday, March 3, 2024