免耕种植水土保持用苎麻木质纤维主要成分分析

为了考察免耕种植水土保持用苎麻农艺性状，本试验以免耕种植的水土保持用苎麻为研究对象，取幼嫩期、快速生长期、成熟期、成熟后期等4 个时期的材料，测定株高、茎粗和含水率，并通过差减法测定木质部、韧皮部和叶的果胶、半纤维素、纤维素和木质素含量。结果表明：成熟后期的苎麻植株高达135 cm，茎粗达12 mm，含水率高达70%~90%，明显优于野生种；在不同生长时期各部位的化学成分含量呈动态变化。综合分析表明，免耕方式种植的苎麻在保持水土的同时还可以收获木质纤维，可供进一步加工利用，从而获得相应的收益。

Analysis of Fiber Main Ingredients in No-till Planting Ramie

In order to investigate agriculture characters of no-till planting ramie, the no-tillage planting ramie was used as the material. We took the xylogen, phloem and leaf of ramie in young period, growth spurt period, mature period and late mature period to measure plant height, stem diameter and moisture content. At the same time, we also measured the contents of pectin, hemicellulose, cellulose and lignin by minusing in these 4 periods. The results showed that in the late mature period of ramie, its height and stem diameter was 135 cm and 12 mm respectively, and the moisture content was 70%-90%, which were much better than that of wild species. There were dynamic changes in the component content of different ramie parts along with the growth of ramie. Comprehensive analysis showed that the cultivation of ramie in no-till way could not only conserve water and soil at the same time but also harvest wood fiber, which could be used in further processing, and thus to get the corresponding returns.