林药间作系统对药用植物产量的影响

该文对林药间作系统中药用植物产量的空间分布规律进行研究 ,其目的是筛选合理的间作模式 ,为生产实践服务 .试验设置了 5种不同毛白杨行距梯度和无林地对照 ,观测了不同毛白杨行距以及同一行距下的不同林地位置间作的甘草、桔梗、天南星 3种药用植物的产量分布规律 .结果表明 :甘草和桔梗产量在行间呈现“低 高 低”的抛物线型分布 ,而天南星产量在行间呈现“高 -低 -高”的抛物线型分布 ,根据数据可以拟合出 3种药用植物在毛白杨行间的产量分布抛物线方程 ;另外 ,甘草产量随着毛白杨行距的减小而减小 ,桔梗和天南星产量先增加后降低 ,它们与毛白杨行距之间均呈抛物线型相关 ,通过方程可以确定 3种药用植物与毛白杨间作时毛白杨的最佳行距和该种行距下药用植物最大产量

Effects of tree and medicinal plant intercropping system on medicinal plants' yield

An embedded study on medicinal plant yield to select reasonable intercropping mode and to serve for production was carried out in this paper. By setting five kinds of poplar row spacing gradients and control, the yield distribution rules of three intercropping medicinal species were observed,namely Glycyrrhiza uralensis, Platycodon grandiflorum and Pinellia pedatisecta . The results show that the yield distribution of Glycyrrhiza uralensis and Platycodon grandiflorum between popular rows appears as “low high low” parabola shape and that of Pinellia pedatisecta is contrary to the former two species, and the yield distributing parabola equation of these three species of medicinal plants can be worked out. At the same time, the yield of Glycyrrhiza uralensis decreases with the poplar row spacing decreasing, the yields of Platycodon grandiflorum and Pinellia pedatisecta are correlated with poplar row spacing as parabola equation. According to these equations, the best row spacing and the biggest yield in this row spacing can be confirmed.