The Effects Comparison Of Different Cassava-Peanut Intercropping Patterns

Cassava (Manihot esculenta Crantz) is one of the sixth largest crops in the world, which behind wheat, rice, corn, potato, and barley. It is a staple food for more than800million people in the world. Due to the low economy, farmers are lack of interest in planting cassava. In recent years, the cassava planting area in China appears stagnant or even reduced. Cassava intercropping with other crops can increase the unit output as well as the cassava planting area. We find that more than half of the cassava intercropping area is cassava/peanut intercropping in Guangxi province. Cassava/peanut intercropping can meet the need of the starch and alcohol raw material as well as the oil. In this experiment, the soil nutrient, growth, yield and quality characteristics of cassava and peanut were studied for equal spacing cassava/peanut intercropping pattern and wide and narrow spacing cassava/peanut intercropping pattern. We set equal spacing monoculture cassava, wide and narrow monoculture spacing cassava, equal spacing monoculture peanut as contrast. The main results were as follows:1. By increasing the Pn of cassava leaf in whole growth stages and the Pn of peanut leaf in late growth stages, the group solar energy efficiency in the T2pattern is better than the T1pattern.2. Compare with the T1pattern, the wide and T2pattern increased the soluble suger content of cassava leaf and the soluble protein content and soluble suger content of peanut leaf, enhanced the adverse environmental resistance of cassava and peanut, shortened the height and internode of peanut, enhanced the lodge resistance of peanut, increased the root shoot ratio of cassava and peanut, improved the yield potentiality of cassava and peanut.3. Compare with the T1pattern, the T2pattern exacerbated the soil acidification and the loss of soil available phosphorus, decreased the soil available nitrogen content, increased the soil available potassium content and the soil organic matter content in0-20cm, increased the soil available nitrogen content, decreased the soil available potassium content and the soil organic matter content in20-40cm.4. Compare with the T1pattern, the wide and T2pattern decreased the protein content of peanut (3.81%), but increased the yield(1.41t/hm2), the starch content (1.17%), dry matter content (0.20%) of cassava, and the land equivalent ratio increased0.06.