A.33%,0.5% B.2%,0.5% C.33%,10% D.25%,1.0%
A.常綠針葉樹不宜多修剪 B.上年花芽分化已完成的開花灌木可重剪 C.分枝明顯、新枝著生花芽的小灌木,應(yīng)順其樹勢(shì)適當(dāng)修剪 D.枝葉集生樹干頂部的樹木可不修剪
A.常綠樹 B.落葉樹 C.陽(yáng)性樹 D.淺根性樹種