不同郁闭度马尾松林下种植射干的生长效果分析

Growth effect analysis of Belamcanda chinensis under the Pinus massoniana forest with different canopy densities

通过在林地利用率为37.5%、郁闭度为0.3~0.6的马尾松林下种植射干3a后,研究射干丛株的保存率和产量。结果表明:射干丛株保存率最高的是郁闭度为0.3的林地,保存率最低的是郁闭度为0.6的林地,但不同郁闭度的马尾松林地对射干丛株保存率的影响不显著。单位面积射干根茎鲜重产量最高的是郁闭度为0.3的林地,产量可达6376kg·hm^(-2);产量最低的是郁闭度为0.6林地,产量约为4376kg·hm^(-2);不同郁闭度马尾松林对射干的根茎鲜重产量影响极显著。在郁闭度为0.3的马尾松林下种植射干更为适合。

The plant preservation rate and yield of Belamcanda chinensis were studied after which was planted under the Pinus massoniana forest with land utilization rate of 37.5%and canopy density of 0.3~0.6 for 3 years.The results showed that the highest plant preservation rate of B.chinensis clump was the P.massoniana forest with canopy densities of 0.3 and the lowest was canopy density of 0.6,but the effect of P.massoniana forest with different canopy densities on the B.chinensis clump preservation rate was not significant.The highest fresh weight yield per unit area of B.chinensis rhizome was found in the P.massoniana forest with canopy density of 0.3 and the yield can be up to 6376 kg·hm-2.The lowest yield was found in the P.massoniana forest with canopy density of 0.6 and the yield about 4376 kg·hm-2.The fresh weight yield of B.chinensis rhizome was significantly affected by the P.massoniana forest with different canopy densities.This study shows that it is more suitable to plant B.chinensis under a P.massoniana forest with canopy density of 0.3.