不同玉米大豆间作行比对大豆光合特性及产量的影响
- 文章编号:
- 10.11861/j.issn.1000-9841.2023.01.0048
- 摘要:
- 为研究适合东北黑土区玉米大豆间作行比，促进玉米大豆间作模式推广应用，本研究以玉米大豆间作系统为主要研究对象，设置玉米单作（M）、大豆单作（S）、玉米大豆行比2∶4间作（M2S4）、玉米大豆行比4∶4间作（M4S4）和玉米大豆行比4∶6间作（M4S6）处理，分析不同间作行比对大豆株高及干物质积累、光合特性相关指标、产量及经济产值分析的影响。结果表明：间作显著增加了大豆株高，降低了干物质量，同时，随着玉米条带数的降低及大豆条带数的增加，光合参数Gs和Tr与单作处理之间呈显著性差异，而Ci则呈现相反的变化趋势。4∶4间作行比（M4S4）处理具有较好的间作优势，土地当量比为1.26，在考虑了政府补贴后，间作复合经济产值显著高于各单作处理，其中，M4S4处理最具有增收潜力。综上，M4S4模式为东北黑土区最佳玉米大豆间作配置方式。
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备注/Memo
国家重点研发计划（2017YFD0300607）。