Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems

Sci Rep. 2019 Mar 20;9(1):4947. doi: 10.1038/s41598-019-41364-1.

Abstract

Planting patterns affect nitrogen (N), phosphorus (P), and potassium (K) acquisition and distribution in maize and soybean under intercropping conditions. Here we reveal that strip relay-intercropping increases the N, P, and K uptake and distribution across plant organs (root, straw, and seed) of maize and soybean, accelerates the dry-matter production of intercrop-species, and compensates the slight maize yield loss by considerably increasing the soybean yield. In a two-year experiment, soybean was planted with maize in different planting patterns (SI, 50:50 cm and SII, 40:160 cm) of relay-intercropping, both planting patterns were compared with sole cropping of maize (SM) and soybean (SS). As compared to SI, SII increased the N, P, and K accumulation in each organ of soybean by 20, 32, and 18 (root) %, 71, 61, and 76 (straw) %, and 68, 65, and 62 (seed) %, respectively, whereas decreased the N, P, and K accumulation in each organ of maize by 1, 4, and 8 (root) %, 1, 10, and 3 (straw) %, and 5, 10, and 8 (seed) %, respectively. Overall, in SII, relay-cropped soybean accumulated 91% of total nutrient uptake (TNU) of sole soybean plants, and relay-cropped maize accumulated 94% of TNU of sole maize plants.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • China
  • Crop Production / methods*
  • Crops, Agricultural
  • Glycine max / metabolism*
  • Nitrogen / analysis
  • Nitrogen / metabolism
  • Nutrients / analysis
  • Nutrients / metabolism*
  • Phosphorus / analysis
  • Phosphorus / metabolism
  • Plant Leaves / chemistry
  • Plant Leaves / metabolism
  • Plant Roots / chemistry
  • Plant Roots / metabolism
  • Potassium / analysis
  • Potassium / metabolism
  • Seeds / chemistry
  • Seeds / metabolism
  • Soil / chemistry
  • Zea mays / metabolism*

Substances

  • Soil
  • Phosphorus
  • Nitrogen
  • Potassium