Effect of cotton-peanut crop rotation pattern on the distribution of dry matter accumulation and yield of peanut
[Objective]To characterize the dry matter accumulation and distribution pattern of peanut un-der the cotton peanut rotation pattern.[Methods]Using the conventional continuous peanut in Xinjiang as control(CK),we set up two different cropping patterns,namely,cotton-peanut-cotton rotation(CPC)and peanut-cotton-peanut rotation(PCP),and measured the dry and fresh ratios of peanut roots,stems,leaves and fruits as well as the amount of dry matter accumulated at the seedling stage,the needle stage,the podding stage and the maturity stage,respectively.[Results]There was a significant positive correlation be-tween the dry weight of peanut pods and fruits,the dry weight of leaves and the biomass of a single plant.The dry-to-fresh ratio and dry matter accumulation of stems,leaves and fruits of cotton-peanut-cotton rota-tion and peanut-cotton-peanut rotation were significantly higher than those of CK during the whole life span of peanut,in which the weight of 100 fruits,100 kernels and yield of cotton-peanut-cotton rotation increased by 21.17％,35.33％and 78.02％,respectively compared with CK;and the weight of 100 fruits,100 kernels,kernel yield and yield of peanut-cotton-peanut rotation increased by 14.68％,6.64％,1.39％and 40.54％,respectively compared with those of CK.The 100-fruit weight and 100-kernel weight of cotton-peanut-cotton rotation were significantly higher than those of CK and peanut-cotton-pea-nut rotation treatments by 21.42％and 35.28％,5.69％and 26.08％,respectively.[Conclusion]It was clearly seen that crop rotation mode achieved the effect of accelerating the fertility process.Crop rotation can significantly increase dry matter accumulation and 100-fruit and 100-kernel weights and is favorable to the improvement of peanut yield.
万方数据
维普
