牡丹在黑龙江越冬防寒栽培,到目前还没有成功的报道。牡丹江农校1986年11月从山东荷泽赵楼乡引入8个牡丹品种的3—4年生苗,引进当年入窖翌年3月中旬出窖上盆放在温室北侧低温处,5月下旬定植到温室前试验地。土壤为草甸壤土,土层厚度为1—1.3米左右。栽植时穴深60厘米,直径40厘米,穴底铺10厘米厚腐熟有机肥,再填5厘米厚表土。然后手提牡丹根颈处与穴口平齐,再回填以1:4有机肥与田土混合均匀分层填入,使土壤与根系密接,浇足栽植水,水渗下后填土3—5厘米,一周左右进行除草松土。成活率为100％,新枝生长量最长达22.6厘米,直径0.8厘米,多数枝长度为5—10厘米,直径在0.7—1.2厘米之间。牡丹越冬,10月末开始初防寒,11月上旬二次防寒,11月下旬最后一次防寒。防寒厚度,覆草和麦秆10—15厘米,覆土15—20厘米。冬前 Peony wintering in Heilongjiang cold cultivation, so far no successful reports. Mudanjiang Agricultural School 1986 年 8 月 from He Zhao Village, Shandong Zhao introduced 8 Peony varieties of 3-4 years old seedlings, the introduction of the year into the cellar in mid-March next year on the cellar pot on the north side of the greenhouse low temperature at the end of May planting To the greenhouse before the test. Soil for the meadow loam, soil thickness of about 1-1.3 meters. When planting 60 cm deep, 40 cm in diameter, the bottom shop 10 cm thick composted organic fertilizer, then fill 5 cm thick topsoil. Then hand peony roots neck flush with the hole, and then backfill with 1: 4 organic fertilizer and soil mixed evenly layered fill, so that the soil and root close, pouring foot planting water, water seepage fill 3-5 cm, About a week of weeding loosening. The survival rate of 100%, the new branch growth of up to 22.6 cm, 0.8 cm in diameter, the majority of branch length of 5-10 cm, the diameter of 0.7-1.2 cm between. Peony winter, beginning early October cold, cold twice in early November, the last cold in late November. Cold thickness, grass and straw 10-15 cm, 15-20 cm soil cover. Before winter