Effects of mixed planting of Chinese milk vetch and rape on soil active organic carbon and its components
"Green Manure-Double-season Rice"is a green,high-yield,high-efficiency,and fertile planting mode.Green manure provides nutrients,improves the ecological environment,and saves energy and reduces emissions.It studies the effects of mixed planting of milk vetch and rape on rice yield,soil active organic carbon and its components,carbon efficiency,and carbon pool management index,and screens the best mixed planting ratio to promote green manure planting and rational utilization in southern my country Land resources to provide a scientific basis.In this experiment,milk vetch and oil menu sowing were used as controls,and a total of 5 treatments were designed(single sowing Chinese milk vetch-early rice-late rice;3/4 Chinese milk vetch+1/4 rape-early rice-late rice;1/2 Chinese milk vetch+1/2 rape-early rice-late rice;1/4 Chinese milk vetch+3/4 rape-early rice-late rice;single sowing rape-early rice-late rice).The results of the study showed that the rice yield and the number of effective panicles in the mixed planting of milk vetch and rape were higher than those of the two controls,and the treatment of 1/2 Chinese milk vetch+1/2 rape was the highest,and the effective panicle number was significantly positively correlated with rice yield.The content of soil microbial biomass carbon readily oxidized organic carbon and active organic carbon in the mixed planting treatment was higher than that of the control treatment,and the difference in the content of microbial biomass carbon was the most significant.The active organic carbon content of the soil was significantly or extremely significantly correlated with the carbon pool management index,the effective rate of carbon and carbon,and the carbon pool management indexes.Through principal component analysis,it was found that mixed planting of Chinese milk vetch and rape in different proportions had a significant impact on the soil active organic carbon pool.Mixed sowing of milk vetch and rape can significantly increase the yield of early rice and increase the content of soil active organic carbon pool.Among them,the treatment of 1/2 Chinese milk vetch+1/2 rape-early rice-late rice has the best effect.
mixed sowingChinese milk vetch and raperice yieldorganic carbon pool
万方数据
维普
