农业机械学报2018，Vol.49Issue(3)：243-251,9.DOI:10.6041/j.issn.1000-1298.2018.03.029
小麦/向日葵间作群体水盐运移机理及种间竞争能力研究
Water and Salt Migration Mechanism and Competitive Ability in Wheat-Sunflower Intercropping System
摘要
Abstract
In order to quantitatively analyze the issues on the mutual use of water and the mechanism of salt migration,clear the relative competitive between the two species of intercropping in wheat-sunflower intercropping system in Hetao irrigation area,the experiment was conducted based on root separation method.The results showed that in wheat-sunflower intercropping system,the wheat utilized 78.23 ～94.23 m3/hm2 of water by the side of sunflower.Meanwhile,the sunflower utilized 44.96 ～57.97 m3/hm2 of water by the side of wheat.By the cross superposition effect of soil internal space,more soil water of 18.56～42.84 m3/hm2 and 20.79 ～46.63 m3/hm2 in wheat and sunflower belts may be utilized,the mean value of root soil EC in wheat and sunflower belts could be reduced by 1.32％ ～ 4.64％ and 2.26％ ～3.16％,respectively.By the water and nutrient complementarity effect of soil internal space,more soil water of 15.12 ～ 26.40 m3/hm2 and 47.60 ～ 57.44 m3/hm2 in wheat and sunflower belts may be utilized,the mean value of root soil EC in wheat and sunflower belts could be reduced by 2.98％ ～4.69％ and 1.82％ ～ 2.44％,respectively.For the relative competitive ability between the two species in intercropping system,the wheat was stronger than sunflower,limiting the cross superposition effect and water and nutrient comnplementarity effect of root in intercropping system was conducive to upgrading the relative competitive ability between the two species of sunflower.关键词
间作群体/隔根/相互利用水量/土壤EC均值/间作优势/种间相对竞争能力Key words
intercropping system/root separation/mutual use of water/mean value of soil EC/intercropping advantages/relative aggressivity of species分类
农业科技引用本文复制引用
张作为,史海滨,刘德平,李仙岳,闫建文,李宏宇..小麦/向日葵间作群体水盐运移机理及种间竞争能力研究[J].农业机械学报,2018,49(3):243-251,9.基金项目
国家自然科学基金项目(51539005、51269015)、黑龙江省博士后资助经费项目(LBH-Z17033)和“十二五”国家科技支撑计划项目(2011BAD29B03) （51539005、51269015）
