Investigate on fertility change of different soil type and effect of typical yellow soil fertility cultivation model
Monitoring plots of different soil types were set up in the study area to investigate the dynamic changes of soil fertility and its effects on crop biomass under conventional fertilization and non-fertilization measures.A representative monitoring plot was selected in a typical yellow soil distribution area to carry out field experiments on soil fertility cultivation technology models,such as organic fertilizer cultivation,green fertilizer return to field,and straw return to field,etc.The main factors affecting soil fertility and the key factors of soil fertility cultivation under different soil fertility cultivation technology models were studied.The results showed that among the 5 different soil types,the lime soil cultivated land had the highest fertilizer amount,and the organic fertilizer input was lower and the fertilizer input was higher.The thickness of arable layer was larger than that of paddy field in dry land.The contents of soil organic matter,total nitrogen,available phosphorus,quick available potassium,and slow available potassium were all at high to medium level.In the process of cultivation and ripening,the soil properties of yellow brown soil may be inconsistent with those of natural soil formation due to human factors.Under the condition of conventional fertilization,the yield increase of purple soil cultivated land was remarkable.The grain yield and straw yield of fresh corn in the green fertilizer area were the highest by implementing the typical soil fertility cultivation technology model.The soil nutrient levels were at a higher or high level;soil fertility cultivation technology model significantly increased the content of soil microbial biomass carbon and soil microbial biomass nitrogen,and the application of organic fertilizer had the greatest effect on the increase of soil microbial biomass carbon and microbial biomass nitrogen.
soil typecultivation mode of soil fertilitysoil microorganismsoil fertilitycultivated land protection
NETL
NSTL
万方数据
