Distribution of roots and root length density in a maize/soybean strip intercropping system |
| |
Authors: | Yang Gao Aiwang Duan Xinqiang Qiu Jingsheng Sun Junpeng Zhang |
| |
Institution: | a Key Laboratory for Crop Water Requirement and Its Regulation, Ministry of Agriculture, Xinxiang, Henan 453003, PR China b Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan 453003, PR China |
| |
Abstract: | In a field experiment in the Yellow River Basin conducted in 2007 and 2008, it was found that, under full irrigation, the roots of maize not only penetrated deeper than those of soybean but also extended into soybean stands underneath the space between inner rows of soybean. The roots of soybean, however, were confined mainly to the zone near the plants. Horizontal growth of the roots of both the crops was confined mainly to the soil layer 16-22 cm below the surface, a layer that lay above an existing plough pan. Root length density (RLD) was much higher in the top layer (0-30 cm deep) and in the zone closer to the plants. The exponential model proved suitable to describe the RLD vertically and horizontally in both sole cropping and in intercropping. |
| |
Keywords: | Maize/soybean intercropping Root distribution Root length density 2D model |
本文献已被 ScienceDirect 等数据库收录! |
|