【摘要】 白桦作为一种经济植物和景观植物,具有很高的观赏价值。该文设置基质(A)、光照强度(B)、浇水次数(C)、温度(D)4因素3水平的L9(3×4)正交试验,研究白桦播种育苗条件最佳组合。结果显示:播种时间、基质、光照强度、浇水次数、温度等因素对白桦种子出苗率和生长量影响程度不同。出苗期最佳组合为A3B3C3D2,草炭土、珍珠岩、蛭石、腐熟鸡粪混合的基质,光照强度为3000Lx,温度为30℃,分别于每天的9:00、15:00～16:00、19:00浇水,出苗率显著提高,苗高生长最佳组合为A3B2C1D2,即采用草炭土、珍珠岩、腐熟鸡粪混合基质,光照强度为400Lx,每天9:00浇水,温度30℃。更多还原

【Abstract】 In this paper,orthogonal experiment design was used to study the best combination of Betula platyphylla Suk. seedling. The results showed that sowing time,substrate,shading degree,watering amount and temperature had different effects. The best combination was A3 B3 C3 D2. The mixture of peat soil,perlite,vermiculite and rotten chicken manure was selected. The shading degree was 50%,and the temperature was 25℃,watering at 9:00,15:00～16:00 and 19:00 every day,respectively. The seedling rate was significantly improved.更多还原