[1]陈小强,范茂攀,王自林,等.不同种植模式对作物根系固土拉力特性的影响[J].水土保持研究,2017,24(05):144-148,156.
　CHEN Xiaoqiang,FAN Maopan,WANG Zilin,et al.Effect of Crop Root on Soil Strength in Different Cropping Patterns[J].Research of Soil and Water Conservation,2017,24(05):144-148,156.
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不同种植模式对作物根系固土拉力特性的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年05期 页码: 144-148,156 栏目: 出版日期: 2017-10-28
Title:
Effect of Crop Root on Soil Strength in Different Cropping Patterns
作者:
陈小强1,2, 范茂攀1, 王自林1, 杜静1, 李永梅1
1. 云南农业大学 资源与环境学院, 昆明 650201;
2. 昆明佳晓自来水工程技术股份有限公司, 昆明 650231
Author(s):
CHEN Xiaoqiang1,2, FAN Maopan1, WANG Zilin1, DU Jing1, LI Yongmei1
1. College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China;
2. Kunming Jiaxiao Water Supply Engineering Technology Co. Ltd., Kunming 650231, China
关键词:
间作; 玉米; 大豆; 根系; 固土能力
Keywords:
intercropping; maize; soybean; root system; soil fixing capability
分类号:
S152.9;S157.4+33
摘要:
玉米大豆间作体系对土壤流失的影响研究多集中在地上部，而鲜有研究报道玉米大豆间作根系特征对固土拉力特性的影响。采用田间径流小区试验，研究了坡耕地条件下玉米大豆间作（MD）、玉米单作（MM）、大豆单作（DD）和裸地（CK）的生物量和根系固土拉力。结果表明：MD处理的玉米根系密度较MM处理增加了19.64%，10—20 cm土层深度范围内MD处理与MM和CK处理间差异显著（p < 0.05），MD处理较MM和CK处理分别高出了4.25%和4.84%，在0—10 cm范围内，MD处理较MM和CK处理分别提高了2.49%和15.85%，在20—30 cm范围内，MD处理较MM和CK处理分别提高了1.56%和6.25%。MD处理的地上部分鲜重生物量较MM处理增加了2.46%，干重生物量较MM处理增加了7.31%，地下部分鲜重生物量较MM处理增加了5.06%，干重生物量较MM处理增加了3.17%。在0—30 cm土层范围内，能有效保持土壤水分，提高土壤含水率。MD处理较MM处理、DD处理和CK处理不论在玉米样方还是在大豆样方其固土能力均强，在施加相同荷载情况下，间作处理比单作处理土壤样方的位移偏移量较单作处理时偏移量小。
Abstract:
Studies on the effect of the maize-soybean intercropping system on soil loss are highly concentrated on aboveground, while there are little researches on soil fixing capability of root character of maize-soybean intercropping. We examined the biomass and soil fixing capability of roots in maize-soybean intercropping (MD), maize monoculture(MM), soybean monoculture(DD) and bare land(CK) on slope cropland by using the field runoff plot experiment. The results show that maize root density of MD treatment is 19.64% higher than MM treatment. The difference is significant between MD, MM and CK treatment in the depth of 10—20 cm(p < 0.05), MD treatment increased by 4.25% and 4.84%, respectively, compared with MM and CK, increased by 2.49% and 15.85% in the depth of 0—10 cm, and increased by 1.56% and 6.25% respectively in the depth of 20—30 cm. Compared with MM treatment, the above-ground fresh biomass of MD increased by 2.46%, and 5.06% in the underground part, the biomass of dry weight increased by 7.31%, and 3.17% in the underground part. In the range of 0—30 cm soil moisture can be effectively maintained and soil water content can be improved. MD treatment has greater soil fixing capability than other treatments in maize quadrat or soybean quadrat. The displacement of soil of the intercropping is shorter than monoculture under the same load.

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备注/Memo

收稿日期:2016-09-20;改回日期:2016-10-09。
基金项目:国家自然科学基金“坡耕地红壤主要农作物根系固土抗蚀生物力学特征研究”（41461059），“间作影响坡耕地红壤团聚体分形特征和抗蚀性的机制”（41661063）
作者简介:陈小强(1989-),男,甘肃天水人,硕士,助理工程师,主要从事水资源综合利用及水土保持研究。E-mail:15877915717@163.com
通讯作者:李永梅(1966-),女,河南新乡人,博士,教授,主要从事坡地水土保持与持续利用研究。E-mail:youngmaylee@126.com

更新日期/Last Update: 1900-01-01