火烧土

扦插育苗生长激素以1000mg·kg-1ABT1号生根粉效果最好，基质以70%红心土±30%火烧土为佳，生根率可达80%以上。

The treatment effect of 1000mg · kg ~ ( - 1 )№ 1 ABT rooting powder was the best , the mixed medium with 70 % red-heart soil and 30 % fire soil were ideal .

即：运用80%森林土+20%火烧土及20%复合肥均匀混合的培育基质，采用大规格的容器15cm×19cm，于育苗期间定期追施沼气肥可取得榉树容器苗壮苗培育的好效果；

Using the medium of 80 % forest soil + 20 % burnt soil and 20 % compound fertilizer as the cultivation medium , container of 15 cm × 19 cm , biogas waste fertilizer as top dressing could achieved good effect .

但传统的容器育苗基质大都以森林腐殖质土、黄心土、火烧土配合有机肥料、树皮粉等为主，重量较重，不便于运输，增加了造林成本，从而限制了容器苗的发展。

But traditional container seedlings media is inconvenient to transport and increase afforesting cost .

不同群落地段的日净光合速率有显著差异。未经火烧覆砂地段最高，次为火烧灌水厚土地段，火烧薄土地段最低。

The net photosynthetic rate per day in different stands was different too , the highest one being the stand with sand cover , the next being that with thick soil and burned , and the lowest one being that with thin soil and after burning .