云南农业大学学报（自然科学）2017，Vol.32Issue(5)：903-911,9.DOI:10.16211/j.issn.1004-390X(n).2017.05.023
坡地玉米马铃薯间作群体地上部垂直层化对水土流失的影响
Effects of Vertical Stratification on the Soil and Water Loss of Maize and Potato Intercropping on Sloping Land
摘要
Abstract
[Purpose] Intercropping is an important agricultural technology to reduce soil and water loss on slope farmland.However,most of previous works based on an overall vision to study the mechanism operating in canopy,it is still lack to explore the role of vertical stratification process and each veg etation layer in canopy on water and soil conservation.[Method] We performed a micro runoff plot experiment using maize and potato intercropping as study object.When crop growth at flowering stage in the rainy season,we selected the maize,potato and weed layer,then removed the single and double layers of them,or no removing.The CK treatment was the bare land without any plant.The runoff,soil erosion and canopy characteristics were measured,and then compared between all treatments.[Result] Increasing vegetation layer on bare land and any vegetation (not more than two layers) can significantly reduced the runoff and soil erosion;when the number of existing vegetation layer were two,the increased vegetation layer was still decreased the runoff and soil erosion,and reached a significant level if the in creased vegetation layer was potato layer.Importantly,there was a coupling effect between different layers.The amount of controlled water and soil in no layer removing treatment were more 1.36 m3/hm2 and 6.89 kg/hm2 than the sum of that in all single layer treatments (removing of double layers) respectively;moreover,the amount of controlled water and soil by two vegetation layers (removing of one layer) were higher 10.56％ and 17.21％ than that by single vegetation layer (removing of two layers) respectively.[Conclusion] Vegetation stratification in crop diversity community reduce the water and soil erosion not only by the improved coverage,but by the interaction between vegetation layers.关键词
植被层化/冠层结构/作物多样性种植/水土流失/玉米/马铃薯Key words
vertical stratification/canopy structure/crop diversity/soil and water loss/maize/potato分类
农业科技引用本文复制引用
张晓云,郎凤莲,李永贤,吴开贤,吴伯志..坡地玉米马铃薯间作群体地上部垂直层化对水土流失的影响[J].云南农业大学学报（自然科学）,2017,32(5):903-911,9.基金项目
公益性行业(农业)科研专项(201503119) （农业）
云南农业大学研究生科技创新基金(2016YKC5) （2016YKC5）
国家自然科学基金(31360306)资助. （31360306）
