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Related Experiment Video

Updated: Jul 10, 2026

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.

Published on: June 16, 2018

Enhancing production efficiency through optimizing plant density in maize-soybean strip intercropping.

Guanghao Li^1,2, Yuwen Liang¹, Qiannan Liu¹

¹Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College of Yangzhou University, Yangzhou, China.

Frontiers in Plant Science

|October 28, 2024

Summary

Optimizing maize-soybean strip intercropping (MSSI) density significantly boosts total grain yield and resource efficiency. The D3 density combination (67,500 maize/142,500 soybean plants ha⁻¹) demonstrated the best overall performance in enhancing production.

Keywords:

density economic benefit land equivalent ratio maize-soybean strip intercropping nitrogen use efficiency yield

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Area of Science:

Agricultural Science
Agronomy
Sustainable Agriculture

Background:

Intercropping systems, particularly maize-soybean strip intercropping (MSSI), are crucial for enhancing land productivity due to limited arable land.
Optimal plant density is key to maximizing yield and resource utilization in MSSI, but remains poorly understood.

Purpose of the Study:

To evaluate the impact of different maize and soybean densities on yield, economic benefits, land use efficiency, and nitrogen (N) utilization in MSSI systems.
To identify the optimal density combination for improved production efficiency in MSSI.

Main Methods:

Field experiments were conducted using five distinct maize/soybean density combinations (D1-D5) under uniform nitrogen input.
Data on grain yield, leaf area index, dry matter accumulation, and N absorption were collected and analyzed.

Main Results:

Increasing maize and soybean density significantly enhanced total grain yield, with the D3 treatment (67,500/142,500 plants ha⁻¹) showing the highest yield.
The D3 treatment also improved leaf area index, dry matter accumulation, and N absorption and utilization.
Path analysis revealed density as the primary driver of maize yield (49.7%), while grain number most influenced soybean yield (61.0%).

Conclusions:

Optimizing plant density is essential for maximizing the production efficiency of MSSI systems.
The D3 density combination offers a promising strategy for enhancing yield and resource use in summer-planted MSSI.
Findings provide critical insights for the wider adoption and effective implementation of MSSI technology.