Effects of biomass slow-release soil water retaining and fertilizer increasing agent on soil and crops in Yanchi county,Ningxia
To explore the effects of biomass slow-release soil water retaining and fertilizer increasing agent on farmland soil water and temperature environment,soil nutrient absorption and crop yield,field experiment was conducted in Yanchi county,Wuzhong city,Ningxia Hui Autonomous Region.Corn,potatoes,oats and other crops were selected as the test crop,and biomass slow-release soil water retaining and fertilizer increasing agent were used as the test material.Different gradients of biomass slow-release soil water retaining and fertilizer increasing agent application rates were set up.Soil moisture content,pH,conductivity,bulk density and soil nutrients were measured,and their effects on soil physicochemical properties,soil nutrients and different crop yields in the experimental area were studied.The results showed that under different application rates,the overall yield of the crops were increased.The highest yield increase rates of Sudan grass and oat grass were 36.26％and 24.35％,respectively.The yield increase rate of buckwheat reached 23.19％when the application amount of biomass slow-release soil water retaining and fertilizer increasing agent was 120 kg/hm2,while the yield increase rate of potato reached the highest of 77.78％when the application amount of biomass slow-release soil water retaining and fertilizer increasing agent was 120 kg/hm2,indicating a significant increase in yield.But the trend of com yield changes was different.When the application amount of biomass slow-release soil water retaining and fertilizer increasing agent was 60 kg/hm2,the yield actually was decreased.When the application amount increased to 120 kg/hm2,the yield was increased,but the yield increase rate was only 0.69％.This was mainly due to the differences in the location,terrain,and soil components of the plot,which resulted in little effect of the application amount of biomass slow-release soil water retaining and fertilizer increasing agent on com yield.
carboxymethyl cellulosecropsyieldsoil propertieswater retention and fertilization effect
万方数据
维普
