The Effect of Straw Returning to Field and Applying Decomposing Agents on Wheat Growth and Soil Physicochemical Properties
Promoting straw decomposition and returning to the field is one of the important ways of straw comprehensive utilization,and the application of appropriate straw decomposing agents can accelerate the rate of straw decomposing.Under field experimental conditions,the effects of four types of decomposing agents,including HSSW,YMSW,JSSW,and WBSW,combined with different amounts of urea,on soil temperature,degree of maize straw decomposing,wheat yield indicators,and soil physicochemical properties are investigated,with no application of decomposing agents as a control.The results show that straw promoting decay and returning to the field can regulate soil temperature.Decomposing agents can promote the decomposition of straw,and YMSW has the most significant effect.The promoting effect of applying 20 kg of urea per mu is better than that of applying 10 kg of urea per mu,and the wheat yield is higher than that of the control treatment.Except for the nitrate nitrogen content in the soil,the total nitrogen,alkaline nitrogen,available phosphorus,available potassium,ammonium nitrogen,and organic matter content in the soil treated with decomposing agents are higher than those in the control treatment.
returning straw to the fielddecomposing agentwheatsoil nutrient
万方数据
维普
