干旱地区农业研究2017，Vol.35Issue(1)：33-40,70,9.DOI:10.7606/j.issn.1000-7601.2017.01.06
沟覆盖材料对垄沟集雨种植土壤水分和玉米根系分布的影响
Effects of furrow-mulching materials on soil moisture and maize root distribution in ridge-furrow rainwater harvesting system
摘要
Abstract
In order to screening environmental friendly mulching materials and elucidate the mechanism of yield in-crease in ridge-furrow rainwater harvesting system,a field experiment was conducted to investigate the effects of different furrow mulching methods (non-mulching,biodegradable film mulching and straw mulching)on soil moisture and root dry matter,length,surface area and volume of maize in semi-arid areas of the Loess Plateau .The results showed that the soil water content and the values of physiological characteristics (dry matter,length,surface area and volume)of maize roots within furrow soil profiles were clearly higher than that within ridge soil profiles .Compared with traditional flat planting without mulching,average soil water content within furrow soil profiles increased during maize growing season was 6 .9%,10 .6% and 9 .3% for non-mulching,biodegradable film mulching and straw mulching,respectively,while within ridge soil profiles decrease was 13 .8%,10 .9%and 5 .6%.Total root dry matter (ridge +furrow)of maize de-creased by 15 .9%,6 .1%and 16 .8%.Total root length of maize increased by 37 .6%,43 .7%and 34 .8%,and to-tal root surface area of maize increase was 10 .5%,33 .6% and 15 .0%.Total root volume of maize decreased by 34 .5%and 16 .3%for non-mulching and straw mulching,respectively,but increased by 13 .2%for biodegradable film mulching .Root dry matter of maize decreased,but soil moisture,root length and root surface area of maize increased in ridge-furrow rainwater harvesting system,compared with the traditional flat planting without mulching .Biodegradable film mulching had a higher soil water content,root length,surface area and volume of maize than other furrow mulching meth-ods .关键词
玉米/垄沟集雨/沟覆盖材料/土壤水分/根系Key words
maize/ridge-furrow rainwater harvesting/furrow mulching material/soil moisture/root分类
农业科技引用本文复制引用
李富春,王琦,张登奎,张恩和,刘青林,王鹤龄..沟覆盖材料对垄沟集雨种植土壤水分和玉米根系分布的影响[J].干旱地区农业研究,2017,35(1):33-40,70,9.基金项目
国家自然科学基金 （）
