heart-wood相关论文
We evaluated heartwood, sapwood and bark content in teak trees.A total of 27 sample plots were laid out in teak plantati......
本试验用简单的对比试验方法,探讨黑荆树不同处理的木屑袋栽香菇,其产量和质量与香菇高产树种——壳手科木屑袋栽香菇之间的差异;......