金沙江元谋干热河谷人工林地铺地木蓝引种研究(Ⅰ)

针对金沙江元谋干热河谷退化旱坡山地环境人工经济林行间少优良草被覆盖问题,在酸角人工经济林行间,种植铺地木蓝对其适应性和生物量产出进行研究。结果表明:铺地木蓝在金沙江干热河谷乡土酸角人工经济林行间适应性较好,具有速生、覆盖力强、耐瘠、耐旱、不攀缘和缠绕客体特点;全生育期内可刈割2次,留茬15cm,地面生物产量达31 501～40 502kg/hm~2;未刈割3年生铺地木蓝地面枯落物为年6300kg/hm~2,可采收种子968.8 kg/hm~2;适宜作为干热区退化旱坡山地人工经济林果行间覆盖作物推广,但规划种植时宜重视低温对其危害。

Introduction Study on Indigofera endecaphylla Jacq in Artifical Forest Space in Dry-hot Valley Yuanmou Jinsha River

Contrapose the problem of running short of cover between artifical economical forest space in degradated slope land in dry-arid jingsha river, ,adaptbility planting of introduction and biomass product experiment was done in agrestic tamarindus indica linn space by Indigofera endecaphylla Jacq. All the index which include germination percentage of seedling cutting croots planting time cgrowth speed chigh of plant grass biomass litter amount and seeds product etc have been measured,tolerance adversity was observed also, Primary result showed:1)Indigofera endecaphylla Jacq have the characters such as grow fast stronger cover ability tolerant barren intolerance draughticno climbing and enwinding objects;2) cutting two time during whole planting period,and 31501-40502kg/hm2 biomass could be harvested ;3) litter amount about 6300 kg/hm2.a could be got under ground of three years old Indigofera endecaphylla Jacq ,and seed about 968.8 kg/hm2 could be harvested.4) The herb was adapted to extend in the economic crops space in degraded slope land in dry-hot regions.5) Temperature under zero centigrade was damaged to Indigofera endecaphylla Jacq ,so programming plant it should think much of the lower temperature .