摘要
研究旱地雨养农业区间作系统对土壤水分和根系形态构建的影响对进一步理解间作系统高效高产具有重要意义。选用不同玉米(Zea mays)(郑单958 M1和豫玉22 M2)和大豆(Glycine max)品种(中黄24 S1和中黄13 S2)以2行大豆2行玉米种植比例进行间作(M1S1,M1S2,M2S1和M2S2),研究间作对作物产量、作物根系形态和土壤含水量的影响,探讨根系形态和土壤含水量之间的关系。结果表明:M1S1间作的产量高于其他间作。M1S1间作玉米的根表面积密度、根体积密度和根重密度分别较M2S1间作提高了40.6%、62.4%和71.9%;M1S1间作大豆的根表面积密度和根体积密度分别较M1S2提高了39.7%和29.4%。M1S1间作玉米和大豆的土壤含水量促进根表面积密度、根体积密度、根重密度增加量分别是M1S2、M2S1、M2S2间作的1.5~2.9、3.1~3.3、3.3~4.9和1.1~1.4、1.5~2.4、1.3~2.0倍。因此,M1S1间作,可以有效提高根系形态的生长速率,有利于旱区作物的生长进而提高作物产量。
It is of great significance to understand the mechanism of high yield and high efficiency of intercropping system,by studying the effect of intercropping patterns on soil water content and root morphology in dryland rain-fed regions.Maize(Zhengdan 958,M1 and Yuyu 22,M2)and soybean varieties(Zhonghuang 24,S1 and Zhonghuang 13,S2)were intercropped at 2꞉2 row proportion(M1S1,M1S2,M2S1,M2S2)to analyze crop yield,root morphology and soil water content under different maize-soybean intercropping systems.The results showed that:The yield under M1S1 intercropping was higher than other intercropping systems.The root surface area density,root volume density and root weight density of maize under M1S1intercropping were higher by 40.6%,62.4%and 71.9%than those of M2S1 intercropping.The root surface area density and root volume density of soybean under M1S1 intercropping increased by 39.7%and 29.4%compared with M1S2 intercropping.The increase in root surface area density,root volume density,root weight density by soil water content of maize and soybean under M1S1 intercropping was by 1.5~2.9,3.1~3.3,3.3~4.9,and 1.1~1.4,1.5~2.4,1.3~2.0 times greater than those in M1S2,M2S1,and M2S2.Therefore,M1S1 intercropping could effectively increase the growth rate of root morphology,which is beneficial for crop growth and increased yield of crops in dryland areas.
作者
任媛媛
李朝怡
闫敏飞
张岁岐
REN Yuanyuan;LI Zhaoyi;YAN Minfei;ZHANG Suiqi(College of Geography and Environment Engineering,Baoji University of Arts and Sciences/Shaanxi Key Laboratory of Disaster Monitoring and Mechanism Simulation,Baoji 721013,Shaanxi,China;Institute of Soil and Water Conservation,Northwest A&F University,Yangling 712100,Shaanxi,China)
出处
《草业科学》
CAS
CSCD
北大核心
2021年第12期2449-2459,共11页
Pratacultural Science
基金
陕西省高校科协青年人才托举计划项目(20200705)
国家自然科学基金青年科学基金项目(41901025)
陕西省科技厅自然科学基础研究项目(2019JQ-895)
双百工程产学研一体化示范基地项目(209030025)。
关键词
间作
土壤含水量
产量
根长密度
根表面积密度
根体积密度
根重密度
intercrop
soil water content
yield
root length density
root surface area density
root volume density
root weight density
